此系统针对学生管理和选课开发，功能并不完善。
面向对象主要有管理员，教师和学生。
管理员可管理教师、学生等用户信息，教师发布课程，学生可进行选课。
数据库表分为课表（Clas），学生表（User_Student），教师表（User_Teacher)，用户表（userr）.
以下为登录界面：
对登陆的各种情况进行判断，判断成功后将用户类别和id存储在session中，跳转至主界面，
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html> 4 <html> 5 <head> 6 <title>A d m i n</title> 7 <style type="text/css"> 8 div { 9 align: center; 10 } 11 12 html { 13 background-color: gray; 14 } 15 16 .de { 17 border-radius: 3px; 18 background-color: rgba(255, 255, 255, 0.2); 19 width: 400px; 20 height: 50px; 21 margin-top: 20px; 22 margin-bottom: 20px; 23 color: #FFF; 24 lighting-color: black; 25 } 26 27 #title { 28 padding-top: 30px; 29 color: white; 30 } 31 32 #mainwindow { 33 font-family: 黑体; 34 font-size: 40px; 35 lighting-color: white; 36 height: 400px; 37 width: 500px; 38 background: rgba(211, 255, 199, 0.5); 39 margin-top: 200px; 40 } 41 42 a { 43 color: white; 44 text-decoration: none; 45 } 46 47 a:hover { 48 background-color: pink; 49 } 50 51 .a { 52 width: 250px; 53 float: left; 54 font-size: 20px; 55 text-align: center; 56 } 57 table 58 { 59 width:1100px; 60 height:500px; 61 border-collapse: collapse; 62 margin: 0 auto; 63 text-align: center; 64 } 65 table td, table th 66 { 67 border: 1px solid #cad9ea; 68 color: #666; 69 height: 30px; 70 } 71 table thead th 72 { 73 background-color: #CCE8EB; 74 width: 100px; 75 } 76 table tr:nth-child(odd) 77 { 78 background: #fff; 79 } 80 table tr:nth-child(even) 81 { 82 background: #F5FAFA; 83 } 84 85 button { /* 按钮美化 */ 86 width: 270px; /* 宽度 */ 87 height: 40px; /* 高度 */ 88 border-width: 0px; /* 边框宽度 */ 89 border-radius: 3px; /* 边框半径 */ 90 background: #1E90FF; /* 背景颜色 */ 91 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 92 outline: none; /* 不显示轮廓线 */ 93 font-family: Microsoft YaHei; /* 设置字体 */ 94 color: white; /* 字体颜色 */ 95 font-size: 17px; /* 字体大小 */ 96 } 97 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 98 background: #5599FF; 99 </style> 100 <% 101 String message = (String) session.getAttribute("message"); 102 if (message != null) { 103 %> 104 <script type="text/javascript"> 105 alert("<%=message%>"); 106 </script> 107 <% 108 session.removeAttribute("message"); 109 } 110 %> 111 <script type="text/javascript"> 112 function sentence(form) { 113 var flag = true; 114 username = form.idusername.value; 115 password = form.password.value; 116 if (username == "") { 117 alert("username cant be null"); 118 return false; 119 } 120 if (password == "") { 121 alert("password cant be null"); 122 return false; 123 } 124 if (!username.match("[a-zA-Z0-9_]")) { 125 alert("用户id不能包含特殊字符！"); 126 return false; 127 } 128 if (!password.match("[a-zA-Z0-9_]")) { 129 alert("密码只能包含数字字母下划线！"); 130 return false; 131 } 132 return true; 133 } 134 </script> 135 </head> 136 <body> 137 <center> 138 <div id="mainwindow"> 139 <div id="title">用户登录</div> 140 <div id="form"> 141 142 <form action="log" name="logf" id="logf" onsubmit="return sentence(logf)"> 143 <input type="text" placeholder="账号" class="de" name="username"><br> 144 <input type="password" placeholder="密码" class="de" name="password"><br> 145 <input type="submit" value="Login"class="de" id="submit"><br> 146 <div class="a"> 147 <a href="#">忘记密码</a> 148 </div> 149 <div class="a"> 150 <a href="#">注册账号</a> 151 </div> 152 </form> 153 </div> 154 </div> 155 </center> 156 </body> 157 158 159 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 9 import javax.servlet.ServletException; 10 import javax.servlet.annotation.WebServlet; 11 import javax.servlet.http.HttpServlet; 12 import javax.servlet.http.HttpServletRequest; 13 import javax.servlet.http.HttpServletResponse; 14 @WebServlet("/log") 15 public class log extends HttpServlet { 16 private static final long serialVersionUID = 1L; 17 public log() { 18 super(); 19 // TODO Auto-generated constructor stub 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String name=request.getParameter("username"); 23 String pass=request.getParameter("password"); 24 String usertype=""; 25 int flag=0; 26 Link l=new Link(); 27 try { 28 Connection con=l.lin("Class_Select"); 29 Statement stmt=con.createStatement(); 30 String s="select * from userr"; 31 ResultSet rsst=stmt.executeQuery(s); 32 while(rsst.next()) { 33 if((name.equals(rsst.getString("username")))&&(pass.equals(rsst.getString("password")))) { 34 flag=1; 35 usertype=rsst.getString(3); 36 System.out.println(usertype); 37 } 38 } 39 rsst.close(); 40 stmt.close(); 41 con.close(); 42 43 } catch (SQLException e) { 44 // TODO Auto-generated catch block 45 e.printStackTrace(); 46 } 47 if(flag==1) { 48 request.getSession().removeAttribute("usertype"); 49 request.getSession().removeAttribute("userid"); 50 request.getSession().setAttribute("usertype",usertype); 51 request.getSession().setAttribute("userid", name); 52 request.getRequestDispatcher("MainWindow.jsp").forward(request, response); 53 } 54 else{ 55 request.getSession().setAttribute("message", "账号或密码错误！"); 56 request.getRequestDispatcher("Login.jsp").forward(request, response); 57 } 58 59 } 60 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 61 // TODO Auto-generated method stub 62 doGet(request, response); 63 } 64 65 }
在主界面的jsp中调用session判断用户类型，显示不同的选项：
管理员主界面：
教师主界面：
学生主界面：
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta charset="UTF-8"> 8 <title>Document</title> 9 <style type="text/css"> 10 11 #d1{ 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 div ul{ 20 vertical-align: top; 21 list-style-type: none; 22 margin: 0px; 23 vertical-align: left; 24 width: 200px; 25 padding: 0px; 26 border-top: 20px solid #F8A0E7; 27 border-bottom :20px solid #F8A0E7; 28 } 29 .headd{ 30 font-family: "微软雅黑"; 31 lighting-color: red; 32 font-size: 20px; 33 } 34 div li a{ 35 height: 80px; 36 display: block; 37 padding: 0px 0px 0px 0em; 38 text-decoration: none; 39 border-left: 20px solid pink; 40 } 41 div li a:link,div li a:visited{ 42 background-color: #F0F0F0; 43 color: #461737; 44 } 45 div li a:hover{ 46 background-color: green; 47 color: gray; 48 } 49 div li a:active{ 50 background-color: pink; 51 } 52 #left{ 53 float:left; 54 } 55 #right{ 56 height:400px; 57 width:1100px; 58 float:left; 59 } 60 #inp{ 61 float:left; 62 height:400px; 63 width:1202px; 64 } 65 .btn{ 66 float:left; 67 } 68 table 69 { 70 width:1100px; 71 height:500px; 72 border-collapse: collapse; 73 margin: 0 auto; 74 text-align: center; 75 } 76 table td, table th 77 { 78 border: 1px solid #cad9ea; 79 color: #666; 80 height: 30px; 81 } 82 table thead th 83 { 84 background-color: #CCE8EB; 85 width: 100px; 86 } 87 table tr:nth-child(odd) 88 { 89 background: #fff; 90 } 91 table tr:nth-child(even) 92 { 93 background: #F5FAFA; 94 } 95 96 button { /* 按钮美化 */ 97 width: 270px; /* 宽度 */ 98 height: 40px; /* 高度 */ 99 border-width: 0px; /* 边框宽度 */ 100 border-radius: 3px; /* 边框半径 */ 101 background: #1E90FF; /* 背景颜色 */ 102 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 103 outline: none; /* 不显示轮廓线 */ 104 font-family: Microsoft YaHei; /* 设置字体 */ 105 color: white; /* 字体颜色 */ 106 font-size: 17px; /* 字体大小 */ 107 } 108 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 109 background: #5599FF; 110 111 </style> 112 </head> 113 <body onload="Onload()"> 114 <div id="d1">学生信息管理系统</div> 115 <div id="left"> 116 <% 117 String message = (String) session.getAttribute("message"); 118 if (message != null) { 119 %> 120 <script type="text/javascript"> 121 alert("<%=message%>"); 122 </script> 123 <% 124 session.removeAttribute("message"); 125 } 126 %> 127 <ul> 128 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 129 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 130 <li><a href="StudentIn.jsp">学生信息录入</a></li> 131 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 132 <li><a href="AddUser.jsp">用户录入</a></li> 133 <li><a href="ShowStudent">学生信息</a></li> 134 <li><a href="ShowTeacher">教师信息</a></li> 135 <li><a href="ShowUser">用户信息</a></li> 136 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 137 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 138 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 139 <li><a href="Update.jsp">修改信息</a></li> 140 <li><a href="ShowClass">选课</a></li> 141 <li><a href="HaveSelected">已选课</a> 142 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 143 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 144 <li><a href="AddClass.jsp">添加课程</a></li> 145 <li><a href="ShowTeaClas">自己的课程</a></li> 146 <%} %> 147 <li><a href="UpdatePassword.jsp">修改密码</a></li> 148 </ul> 149 </div> 150 <div id="right"> 151 <h1>学生信息管理系统</h1> 152 </div> 153 </body> 154 </html>
管理员功能页：
添加学生信息：
将学生信息录入到学生表和用户表中
添加成功后提示并跳回添加学生界面
以下教师信息录入与用户录入相似，
教师信息录入到教师表和用户表中，用户录入只录入到用户表
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta charset="UTF-8"> 8 <title>Document</title> 9 <style type="text/css"> 10 11 #d1{ 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 div ul{ 20 vertical-align: top; 21 list-style-type: none; 22 margin: 0px; 23 vertical-align: left; 24 width: 200px; 25 padding: 0px; 26 border-top: 20px solid #F8A0E7; 27 border-bottom :20px solid #F8A0E7; 28 } 29 .headd{ 30 font-family: "微软雅黑"; 31 lighting-color: red; 32 font-size: 20px; 33 } 34 div li a{ 35 height: 80px; 36 display: block; 37 padding: 0px 0px 0px 0em; 38 text-decoration: none; 39 border-left: 20px solid pink; 40 } 41 div li a:link,div li a:visited{ 42 background-color: #F0F0F0; 43 color: #461737; 44 } 45 div li a:hover{ 46 background-color: green; 47 color: gray; 48 } 49 div li a:active{ 50 background-color: pink; 51 } 52 #left{ 53 float:left; 54 } 55 #right{ 56 height:400px; 57 width:1100px; 58 float:left; 59 } 60 #inp{ 61 float:left; 62 height:400px; 63 width:1202px; 64 } 65 .btn{ 66 float:left; 67 } 68 table 69 { 70 width:1100px; 71 height:500px; 72 border-collapse: collapse; 73 margin: 0 auto; 74 text-align: center; 75 } 76 table td, table th 77 { 78 border: 1px solid #cad9ea; 79 color: #666; 80 height: 30px; 81 } 82 table thead th 83 { 84 background-color: #CCE8EB; 85 width: 100px; 86 } 87 table tr:nth-child(odd) 88 { 89 background: #fff; 90 } 91 table tr:nth-child(even) 92 { 93 background: #F5FAFA; 94 } 95 96 button { /* 按钮美化 */ 97 width: 270px; /* 宽度 */ 98 height: 40px; /* 高度 */ 99 border-width: 0px; /* 边框宽度 */ 100 border-radius: 3px; /* 边框半径 */ 101 background: #1E90FF; /* 背景颜色 */ 102 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 103 outline: none; /* 不显示轮廓线 */ 104 font-family: Microsoft YaHei; /* 设置字体 */ 105 color: white; /* 字体颜色 */ 106 font-size: 17px; /* 字体大小 */ 107 } 108 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 109 background: #5599FF; 110 111 </style> 112 <% 113 String message = (String) session.getAttribute("message"); 114 if (message != null) { 115 %> 116 <script type="text/javascript"> 117 alert("<%=message%>"); 118 </script> 119 <% 120 session.removeAttribute("message"); 121 } 122 %> 123 124 125 </head> 126 <body onload="Onload()"> 127 <div id="d1">学生管理系统</div> 128 <div id="left"> 129 <ul> 130 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 131 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 132 <li><a href="StudentIn.jsp">学生信息录入</a></li> 133 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 134 <li><a href="AddUser.jsp">用户录入</a></li> 135 <li><a href="ShowStudent">学生信息</a></li> 136 <li><a href="ShowTeacher">教师信息</a></li> 137 <li><a href="ShowUser">用户信息</a></li> 138 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 139 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 140 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 141 <li><a href="Update.jsp">修改信息</a></li> 142 <li><a href="ShowClass">选课</a></li> 143 <li><a href="HaveSelected">已选课</a> 144 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 145 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 146 <li><a href="AddClass.jsp">添加课程</a></li> 147 <li><a href="ShowTeaClas">自己的课程</a></li> 148 <%} %> 149 <li><a href="UpdatePassword.jsp">修改密码</a></li> 150 </ul> 151 </div> 152 <div id="right"> 153 <form action="StudentIn"> 154 <table> 155 <tr> 156 157 <td>姓名：</td><td><input type="text" name="name" id="name"></td> 158 </tr><tr> 159 <td>学号：</td><td><input type="text" name="id" id="id"></td> 160 </tr> 161 <tr> 162 <td>性别：</td><td><input type="text" name="sex" id="sex"></td> 163 </tr> 164 <tr> 165 <td>班级：</td><td><input type="text" name="clas" id="clas"></td></tr> 166 <tr> 167 <td>学院：</td><td><input type="text" name="yard" id="yard"></td></tr> 168 <tr> 169 <td>密码：</td><td><input type="text" name="password" id="password"></td></tr> 170 <tr><td colspan="2"><button type="submit" value="提 交">提交</button></td></tr> 171 </table> 172 </form> 173 </div> 174 </body> 175 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.SQLException; 6 import java.sql.Statement; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 @WebServlet("/StudentIn") 14 public class StudentIn extends HttpServlet { 15 private static final long serialVersionUID = 1L; 16 public StudentIn() { 17 super(); 18 // TODO Auto-generated constructor stub 19 } 20 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 21 String name=request.getParameter("name"); 22 String userid=request.getParameter("id"); 23 int id=Integer.parseInt(userid); 24 String sex=request.getParameter("sex"); 25 String clas=request.getParameter("clas"); 26 String yard=request.getParameter("yard"); 27 String password=request.getParameter("password"); 28 Link l=new Link(); 29 try { 30 Connection con=l.lin("Class_Select"); 31 Statement stmt=con.createStatement(); 32 String s="insert into User_Student values ('"+id+"','"+name+"','"+sex+"','"+clas+"','"+yard+"','"+id+"','"+password+"')"; 33 stmt.executeUpdate(s); 34 String s2="insert into userr values ('"+id+"','"+password+"','stu')"; 35 stmt.executeUpdate(s2); 36 stmt.close(); 37 con.close(); 38 } catch (SQLException e) { 39 e.printStackTrace(); 40 } 41 request.getSession().setAttribute("message", "添加成功！"); 42 request.getRequestDispatcher("StudentIn.jsp").forward(request, response); 43 } 44 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 45 doGet(request, response); 46 } 47 48 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta charset="UTF-8"> 8 <title>Document</title> 9 <style type="text/css"> 10 11 #d1{ 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 div ul{ 20 vertical-align: top; 21 list-style-type: none; 22 margin: 0px; 23 vertical-align: left; 24 width: 200px; 25 padding: 0px; 26 border-top: 20px solid #F8A0E7; 27 border-bottom :20px solid #F8A0E7; 28 } 29 .headd{ 30 font-family: "微软雅黑"; 31 lighting-color: red; 32 font-size: 20px; 33 } 34 div li a{ 35 height: 80px; 36 display: block; 37 padding: 0px 0px 0px 0em; 38 text-decoration: none; 39 border-left: 20px solid pink; 40 } 41 div li a:link,div li a:visited{ 42 background-color: #F0F0F0; 43 color: #461737; 44 } 45 div li a:hover{ 46 background-color: green; 47 color: gray; 48 } 49 div li a:active{ 50 background-color: pink; 51 } 52 #left{ 53 float:left; 54 } 55 #right{ 56 height:400px; 57 width:1100px; 58 float:left; 59 } 60 #inp{ 61 float:left; 62 height:400px; 63 width:1202px; 64 } 65 .btn{ 66 float:left; 67 } 68 table 69 { 70 width:1100px; 71 height:500px; 72 border-collapse: collapse; 73 margin: 0 auto; 74 text-align: center; 75 } 76 table td, table th 77 { 78 border: 1px solid #cad9ea; 79 color: #666; 80 height: 30px; 81 } 82 table thead th 83 { 84 background-color: #CCE8EB; 85 width: 100px; 86 } 87 table tr:nth-child(odd) 88 { 89 background: #fff; 90 } 91 table tr:nth-child(even) 92 { 93 background: #F5FAFA; 94 } 95 96 button { /* 按钮美化 */ 97 width: 270px; /* 宽度 */ 98 height: 40px; /* 高度 */ 99 border-width: 0px; /* 边框宽度 */ 100 border-radius: 3px; /* 边框半径 */ 101 background: #1E90FF; /* 背景颜色 */ 102 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 103 outline: none; /* 不显示轮廓线 */ 104 font-family: Microsoft YaHei; /* 设置字体 */ 105 color: white; /* 字体颜色 */ 106 font-size: 17px; /* 字体大小 */ 107 } 108 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 109 background: #5599FF; 110 111 </style> 112 113 <% 114 String message = (String) session.getAttribute("message"); 115 if (message != null) { 116 %> 117 <script type="text/javascript"> 118 alert("<%=message%>"); 119 </script> 120 <% 121 session.removeAttribute("message"); 122 } 123 %> 124 125 126 </head> 127 <body onload="Onload()"> 128 <div id="d1">学生管理系统</div> 129 <div id="left"> 130 <ul> 131 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 132 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 133 <li><a href="StudentIn.jsp">学生信息录入</a></li> 134 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 135 <li><a href="AddUser.jsp">用户录入</a></li> 136 <li><a href="ShowStudent">学生信息</a></li> 137 <li><a href="ShowTeacher">教师信息</a></li> 138 <li><a href="ShowUser">用户信息</a></li> 139 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 140 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 141 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 142 <li><a href="Update.jsp">修改信息</a></li> 143 <li><a href="ShowClass">选课</a></li> 144 <li><a href="HaveSelected">已选课</a> 145 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 146 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 147 <li><a href="AddClass.jsp">添加课程</a></li> 148 <li><a href="ShowTeaClas">自己的课程</a></li> 149 <%} %> 150 <li><a href="UpdatePassword.jsp">修改密码</a></li> 151 </ul> 152 </div> 153 <div id="right"> 154 <form action="TeacherIn"> 155 <table> 156 <tr> 157 158 <td>姓名：</td><td><input type="text" name="name" id="name"></td> 159 </tr><tr> 160 <td>工号：</td><td><input type="text" name="id" id="id"></td> 161 </tr> 162 <tr> 163 <td>性别：</td><td><input type="text" name="sex" id="sex"></td> 164 </tr> 165 <tr> 166 <td>学院：</td><td><input type="text" name="clas" id="clas"></td></tr> 167 <tr> 168 <td>职称：</td><td><input type="text" name="call" id="call"></td> 169 </tr> 170 <tr> 171 <td>密码：</td><td><input type="text" name="password" id="password"></td></tr> 172 <tr><td colspan="2"><button type="submit" value="提 交">提交</button></td></tr> 173 </table> 174 </form> 175 </div> 176 </body> 177 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.SQLException; 6 import java.sql.Statement; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 @WebServlet("/TeacherIn") 14 public class TeacherIn extends HttpServlet { 15 private static final long serialVersionUID = 1L; 16 public TeacherIn() { 17 super(); 18 // TODO Auto-generated constructor stub 19 } 20 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 21 String name=request.getParameter("name"); 22 String userid=request.getParameter("id"); 23 int id=Integer.parseInt(userid); 24 String sex=request.getParameter("sex"); 25 String call=request.getParameter("call"); 26 String clas=request.getParameter("clas"); 27 String password=request.getParameter("password"); 28 Link l=new Link(); 29 try { 30 Connection con=l.lin("Class_Select"); 31 Statement stmt=con.createStatement(); 32 String s="insert into User_Teacher values ("+id+",'"+name+"','"+sex+"','"+clas+"','"+call+"','"+password+"')"; 33 System.out.println(s); 34 stmt.executeUpdate(s); 35 String s2="insert into userr values ('"+id+"','"+password+"','tch')"; 36 stmt.executeUpdate(s2); 37 stmt.close(); 38 con.close(); 39 } catch (SQLException e) { 40 e.printStackTrace(); 41 } 42 request.getSession().setAttribute("message", "添加成功！"); 43 request.getRequestDispatcher("TeacherIn.jsp").forward(request, response); 44 } 45 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 46 doGet(request, response); 47 } 48 49 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta charset="UTF-8"> 8 <title>Document</title> 9 <style type="text/css"> 10 #d1{ 11 text-align: center; 12 padding-top: 40px; 13 font-family: "微软雅黑"; 14 font-size: 40px; 15 background-color: #DDDDDD; 16 height: 100px; 17 } 18 div ul{ 19 vertical-align: top; 20 list-style-type: none; 21 margin: 0px; 22 vertical-align: left; 23 width: 200px; 24 padding: 0px; 25 border-top: 20px solid #F8A0E7; 26 border-bottom :20px solid #F8A0E7; 27 } 28 .headd{ 29 font-family: "微软雅黑"; 30 lighting-color: red; 31 font-size: 20px; 32 } 33 div li a{ 34 height: 80px; 35 display: block; 36 padding: 0px 0px 0px 0em; 37 text-decoration: none; 38 border-left: 20px solid pink; 39 } 40 div li a:link,div li a:visited{ 41 background-color: #F0F0F0; 42 color: #461737; 43 } 44 div li a:hover{ 45 background-color: green; 46 color: gray; 47 } 48 div li a:active{ 49 background-color: pink; 50 } 51 #left{ 52 float:left; 53 } 54 #right{ 55 height:400px; 56 width:1100px; 57 float:left; 58 } 59 #inp{ 60 float:left; 61 height:400px; 62 width:1202px; 63 } 64 .btn{ 65 float:left; 66 } 67 table 68 { 69 width:1100px; 70 height:500px; 71 border-collapse: collapse; 72 margin: 0 auto; 73 text-align: center; 74 } 75 table td, table th 76 { 77 border: 1px solid #cad9ea; 78 color: #666; 79 height: 30px; 80 } 81 table thead th 82 { 83 background-color: #CCE8EB; 84 width: 100px; 85 } 86 table tr:nth-child(odd) 87 { 88 background: #fff; 89 } 90 table tr:nth-child(even) 91 { 92 background: #F5FAFA; 93 } 94 95 button { /* 按钮美化 */ 96 width: 270px; /* 宽度 */ 97 height: 40px; /* 高度 */ 98 border-width: 0px; /* 边框宽度 */ 99 border-radius: 3px; /* 边框半径 */ 100 background: #1E90FF; /* 背景颜色 */ 101 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 102 outline: none; /* 不显示轮廓线 */ 103 font-family: Microsoft YaHei; /* 设置字体 */ 104 color: white; /* 字体颜色 */ 105 font-size: 17px; /* 字体大小 */ 106 } 107 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 108 background: #5599FF; 109 110 #chk { 111 display: none; /* 将原生的checkbox隐藏 */ 112 } 113 114 /* label 模拟 “划动条” */ 115 #chk + label { 116 position: relative; 117 display: inline-block; 118 width: 60px; 119 height: 20px; 120 border-radius: 10px; 121 background-color: #bbb; 122 } 123 124 /* “label::before伪元素 模拟 “划块” */ 125 #sex + label:before { 126 content: ''; 127 cursor: pointer; 128 position: absolute; 129 top: -5px; 130 left: 0; 131 z-index: 99; 132 width: 30px; 133 height: 30px; 134 border-radius: 50%; 135 background: #F7F4F4; 136 box-shadow: 0 3px 1px rgba(0,0,0,0.05), 0 0px 1px rgba(0,0,0,0.3); 137 -webkit-transition: all 0.1s ease-in; 138 transition: all 0.1s ease-in; 139 } 140 141 /* checkbox选中状态时，“划动条”的样式 */ 142 #sex:checked + label { 143 background: #aabbfd; 144 } 145 146 /* checkbox选中状态时，“划块”的样式 */ 147 #sex:checked + label:before { 148 content: ''; 149 position: absolute; 150 left: 30px; 151 background-color: #4ea5dd; 152 </style> 153 <% 154 String message = (String) session.getAttribute("message"); 155 if (message != null) { 156 %> 157 <script type="text/javascript"> 158 alert("<%=message%>"); 159 </script> 160 <% 161 session.removeAttribute("message"); 162 } 163 %> 164 </head> 165 <body> 166 <div id="d1">学生信息管理系统</div> 167 <div id="left"> 168 <ul> 169 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 170 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 171 <li><a href="StudentIn.jsp">学生信息录入</a></li> 172 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 173 <li><a href="AddUser.jsp">用户录入</a></li> 174 <li><a href="ShowStudent">学生信息</a></li> 175 <li><a href="ShowTeacher">教师信息</a></li> 176 <li><a href="ShowUser">用户信息</a></li> 177 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 178 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 179 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 180 <li><a href="Update.jsp">修改信息</a></li> 181 <li><a href="ShowClass">选课</a></li> 182 <li><a href="HaveSelected">已选课</a> 183 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 184 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 185 <li><a href="AddClass.jsp">添加课程</a></li> 186 <li><a href="ShowTeaClas">自己的课程</a></li> 187 <%} %> 188 <li><a href="UpdatePassword.jsp">修改密码</a></li> 189 </ul> 190 </div> 191 <div id="right"> 192 <form action="UserIn"> 193 <table> 194 <tr> 195 <td>账号：</td><td><input type="text" name="username" id="username"></td></tr> 196 <tr><td>密码：</td><td><input type="text" name="password" id="password"></td></tr> 197 <tr><td>用户类型：</td><td><input type="text" name="usertype" id="usertype"></td></tr> 198 <tr><td colspan="2"><button type="submit" value="提 交">提交</button></td></tr> 199 </table> 200 </form> 201 </div> 202 </body> 203 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 9 import javax.servlet.ServletException; 10 import javax.servlet.annotation.WebServlet; 11 import javax.servlet.http.HttpServlet; 12 import javax.servlet.http.HttpServletRequest; 13 import javax.servlet.http.HttpServletResponse; 14 15 @WebServlet("/UserIn") 16 public class UserIn extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public UserIn() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) 22 throws ServletException, IOException { 23 String username=request.getParameter("username"); 24 String password = request.getParameter("password"); 25 String type=request.getParameter("usertype"); 26 int flag = 0; 27 Link l = new Link(); 28 try { 29 Connection con = l.lin("Class_Select"); 30 Statement stmt = con.createStatement(); 31 String s0 = "select * from userr"; 32 ResultSet rsst = stmt.executeQuery(s0); 33 while(rsst.next()) { 34 if(username.equals(rsst.getString("username"))) { 35 flag=1; 36 } 37 } 38 if(flag==0) { 39 String s="insert into userr values('"+username+"','"+password+"','"+type+"')"; 40 stmt.executeUpdate(s); 41 } 42 stmt.close(); 43 rsst.close(); 44 con.close(); 45 } catch (SQLException e) { 46 e.printStackTrace(); 47 } 48 if(flag==0) { 49 request.getSession().setAttribute("message", "录入成功！"); 50 }else { 51 request.getSession().setAttribute("message", "用户名已存在！请重新录入！"); 52 } 53 54 request.getRequestDispatcher("AddUser.jsp").forward(request, response); 55 response.getWriter().append("Served at: ").append(request.getContextPath()); 56 } 57 58 protected void doPost(HttpServletRequest request, HttpServletResponse response) 59 throws ServletException, IOException { 60 doGet(request, response); 61 } 62 63 }
学生信息页面：
从学生表中读取学生信息，存储到studentBean中传到jsp
可对学生信息进行修改和删除：
修改：点击修改进入修改界面
除学号外都可进行修改：
修改完成后跳回学生信息界面
删除：
删除成功后跳回学生信息界面。
学生信息界面同时提供简单查询选项，可按班级和姓名进行查询：
查询成功后显示学生信息，查询失败显示查无此人并跳回学生信息界面
显示信息：
1 package p1; 2 3 public class StudentBean { 4 private String id,name,sex,yard,clas; 5 public String getId() { 6 return id; 7 } 8 9 public void setId(String id) { 10 this.id = id; 11 } 12 13 public String getName() { 14 return name; 15 } 16 17 public void setName(String name) { 18 this.name = name; 19 } 20 21 public String getSex() { 22 return sex; 23 } 24 25 public void setSex(String sex) { 26 this.sex = sex; 27 } 28 29 public String getYard() { 30 return yard; 31 } 32 33 public void setYard(String yard) { 34 this.yard = yard; 35 } 36 37 public String getClas() { 38 return clas; 39 } 40 41 public void setClas(String clas) { 42 this.clas = clas; 43 } 44 45 }
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowStudent") 16 public class ShowStudent extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowStudent() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 ArrayList<StudentBean> arr=new ArrayList<StudentBean>(); 23 Link l=new Link(); 24 try { 25 Connection con=l.lin("Class_Select"); 26 Statement stmt=con.createStatement(); 27 String s="select * from User_Student"; 28 ResultSet rsst=stmt.executeQuery(s); 29 while(rsst.next()) { 30 StudentBean ub=new StudentBean(); 31 ub.setId(rsst.getString(1)); 32 ub.setName(rsst.getString(2)); 33 ub.setSex(rsst.getString(3)); 34 ub.setYard(rsst.getString(4)); 35 ub.setClas(rsst.getString(5)); 36 arr.add(ub); 37 } 38 } catch (SQLException e) { 39 e.printStackTrace(); 40 } 41 request.setAttribute("list", arr); 42 request.getRequestDispatcher("ShowStudent.jsp").forward(request, response); 43 } 44 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 45 doGet(request, response); 46 } 47 48 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 170px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function Update(id){ 136 window.location.href="ShowMySession?id="+id; 137 } 138 function Borrow(id){ 139 var sen=confirm("确认删除？"); 140 if(sen==true) 141 window.location.href="DeleteStudent?id="+id; 142 } 143 </script> 144 </head> 145 <body onload="Onload()"> 146 <div id="d1">学生信息管理系统</div> 147 <div id="left"> 148 <ul> 149 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 150 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 151 <li><a href="StudentIn.jsp">学生信息录入</a></li> 152 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 153 <li><a href="AddUser.jsp">用户录入</a></li> 154 <li><a href="ShowStudent">学生信息</a></li> 155 <li><a href="ShowTeacher">教师信息</a></li> 156 <li><a href="ShowUser">用户信息</a></li> 157 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 158 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 159 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 160 <li><a href="Update.jsp">修改信息</a></li> 161 <li><a href="ShowClass">选课</a></li> 162 <li><a href="HaveSelected">已选课</a> 163 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 164 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 165 <li><a href="AddClass.jsp">添加课程</a></li> 166 <li><a href="ShowTeaClas">自己的课程</a></li> 167 <%} %> 168 <li><a href="UpdatePassword.jsp">修改密码</a></li> 169 </ul> 170 </div> 171 <div id="right"> 172 <table> 173 <tr> 174 175 <td>按姓名查找：</td> 176 <form action="SearchByName"> 177 <td><input type="text" name="name"></td> 178 <td><button>查询</button></td> 179 </form> 180 <td>按班级查找：</td> 181 <form action="SearchByClas"> 182 <td><input type="text" name="clas"></td> 183 <td><button>查询</button></td></form> 184 185 </tr> 186 <c:forEach items="${list}" var="list"> 187 <tr> 188 <td>学院：${list.yard}</td> 189 <td>班级：${list.clas}</td> 190 <td>姓名：${list.name}</td> 191 <td>性别：${list.sex}</td> 192 <td>学号：${list.id}</td> 193 <td><button onclick="Update(${list.id})">修改</button></td> 194 <td><button onclick="Borrow(${list.id})">删除</button></td> 195 </tr> 196 </c:forEach> 197 </table> 198 </div> 199 </body> 200 </html>
修改：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowMySession") 16 public class ShowMySession extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowMySession() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 ArrayList<StudentBean> arr=new ArrayList<StudentBean>(); 23 String id=request.getParameter("id"); 24 System.out.println(id); 25 Link l=new Link(); 26 try { 27 Connection con=l.lin("Class_Select"); 28 Statement stmt=con.createStatement(); 29 String s="select * from User_Student where id='"+id+"'"; 30 ResultSet rsst=stmt.executeQuery(s); 31 while(rsst.next()) { 32 StudentBean ub=new StudentBean(); 33 ub.setId(rsst.getString(1)); 34 ub.setName(rsst.getString(2)); 35 ub.setSex(rsst.getString(3)); 36 ub.setYard(rsst.getString(4)); 37 ub.setClas(rsst.getString(5)); 38 arr.add(ub); 39 } 40 } catch (SQLException e) { 41 e.printStackTrace(); 42 } 43 request.setAttribute("list", arr); 44 request.getRequestDispatcher("ShowMySession.jsp").forward(request, response); 45 } 46 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 47 doGet(request, response); 48 } 49 50 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 270px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function UpdateYard(id){ 136 var word=prompt("请输入修改后的结果："); 137 word=encodeURIComponent(word); 138 var sentence=confirm("是否确认修改！"); 139 if(sentence==true) 140 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=yard"; 141 } 142 function UpdateName(id){ 143 var word=prompt("请输入修改后的结果："); 144 var sentence=confirm("是否确认修改！"); 145 word=encodeURIComponent(word); 146 if(sentence==true) 147 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=name"; 148 } 149 function UpdateSex(id){ 150 var word=prompt("请输入修改后的结果："); 151 var sentence=confirm("是否确认修改！"); 152 word=encodeURIComponent(word); 153 if(sentence==true) 154 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=sex"; 155 } 156 function UpdateClas(id){ 157 var word=prompt("请输入修改后的结果："); 158 var sentence=confirm("是否确认修改！"); 159 word=encodeURIComponent(word); 160 if(sentence==true) 161 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=clas"; 162 } 163 164 </script> 165 </head> 166 <body onload="Onload()"> 167 <div id="d1">学生信息管理系统</div> 168 <div id="left"> 169 <ul> 170 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 171 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 172 <li><a href="StudentIn.jsp">学生信息录入</a></li> 173 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 174 <li><a href="AddUser.jsp">用户录入</a></li> 175 <li><a href="ShowStudent">学生信息</a></li> 176 <li><a href="ShowTeacher">教师信息</a></li> 177 <li><a href="ShowUser">用户信息</a></li> 178 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 179 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 180 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 181 <li><a href="ShowClass">选课</a></li> 182 <li><a href="HaveSelected">已选课</a> 183 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 184 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 185 <li><a href="AddClass.jsp">添加课程</a></li> 186 <li><a href="ShowTeaClas">自己的课程</a></li> 187 <%} %> 188 <li><a href="UpdatePassword.jsp">修改密码</a></li> 189 </ul> 190 </div> 191 <div id="right"> 192 <table> 193 <c:forEach items="${list}" var="list"> 194 <tr> 195 <td>学院：${list.yard}</td> 196 <%if(session.getAttribute("usertype").equals("root")){ %> 197 <td><button onclick="UpdateYard(${list.id})">修改</button></td><%} %> 198 </tr><tr> 199 <td>班级：${list.clas}</td> 200 <%if(session.getAttribute("usertype").equals("root")){ %> 201 <td><button onclick="UpdateClas(${list.id})">修改</button></td><%} %> 202 </tr><tr> 203 <td>姓名：${list.name}</td> 204 <%if(session.getAttribute("usertype").equals("root")){ %> 205 <td><button onclick="UpdateName(${list.id})">修改</button></td><%} %> 206 </tr><tr> 207 <td>性别：${list.sex}</td> 208 <%if(session.getAttribute("usertype").equals("root")){ %> 209 <td><button onclick="UpdateSex(${list.id})">修改</button></td><%} %> 210 </tr><tr> 211 <td>学号：${list.id}</td> 212 </tr> 213 </c:forEach> 214 </table> 215 </div> 216 </body> 217 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.SQLException; 6 import java.sql.Statement; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 @WebServlet("/UpdateStudent") 14 public class UpdateStudent extends HttpServlet { 15 private static final long serialVersionUID = 1L; 16 public UpdateStudent() { 17 super(); 18 } 19 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 20 String type=request.getParameter("type"); 21 String word=request.getParameter("word"); 22 String id=request.getParameter("id"); 23 Link l=new Link(); 24 try { 25 Connection con=l.lin("Class_Select"); 26 Statement stmt=con.createStatement(); 27 String s="update User_Student set "+type+"='"+word+"' where id='"+id+"'"; 28 stmt.executeUpdate(s); 29 stmt.close(); 30 con.close(); 31 } catch (SQLException e) { 32 e.printStackTrace(); 33 } 34 request.getSession().setAttribute("message", "修改成功！"); 35 request.getRequestDispatcher("ShowStudent").forward(request, response); 36 } 37 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 38 // TODO Auto-generated method stub 39 doGet(request, response); 40 } 41 42 }
删除：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.SQLException; 6 import java.sql.Statement; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 @WebServlet("/DeleteStudent") 14 public class DeleteStudent extends HttpServlet { 15 private static final long serialVersionUID = 1L; 16 public DeleteStudent() { 17 super(); 18 } 19 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 20 String id=request.getParameter("id"); 21 Link l=new Link(); 22 try { 23 Connection con=l.lin("Class_Select"); 24 Statement stmt=con.createStatement(); 25 String s="delete User_Student where id='"+id+"'"; 26 stmt.executeUpdate(s); 27 } catch (SQLException e) { 28 e.printStackTrace(); 29 } 30 request.getSession().setAttribute("message", "删除成功！"); 31 request.getRequestDispatcher("ShowStudent").forward(request, response); 32 } 33 34 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 35 doGet(request, response); 36 } 37 38 }
查询：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/SearchByName") 16 public class SearchByName extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public SearchByName() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String name=request.getParameter("name"); 23 ArrayList<StudentBean> list=new ArrayList<>(); 24 int flag=0; 25 System.out.println(name); 26 if(name!=""&&name!=null) { 27 Link l=new Link(); 28 try { 29 Connection con=l.lin("Class_Select"); 30 Statement stmt=con.createStatement(); 31 ResultSet rsst=stmt.executeQuery("select * from User_Student where name='"+name+"'"); 32 while(rsst.next()) { 33 StudentBean st=new StudentBean(); 34 st.setId(rsst.getString(1)); 35 st.setName(rsst.getString(2)); 36 st.setSex(rsst.getString(3)); 37 st.setYard(rsst.getString(4)); 38 st.setClas(rsst.getString(5)); 39 list.add(st); 40 flag=1; 41 } 42 } catch (SQLException e) { 43 // TODO Auto-generated catch block 44 e.printStackTrace(); 45 } 46 47 } 48 if(flag==0) { 49 System.out.println(1111111); 50 request.getSession().setAttribute("message", "查无此人！"); 51 request.getRequestDispatcher("ShowStudent").forward(request,response); 52 }else { 53 request.getSession().setAttribute("list", list); 54 request.getRequestDispatcher("ShowStudent.jsp").forward(request,response); 55 } 56 } 57 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 58 doGet(request, response); 59 } 60 61 }
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/SearchByClas") 16 public class SearchByClas extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public SearchByClas() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String clas=request.getParameter("clas"); 23 ArrayList<StudentBean> list=new ArrayList<>(); 24 int flag=0; 25 if(clas!=""&&clas!=null) { 26 Link l=new Link(); 27 try { 28 Connection con=l.lin("Class_Select"); 29 Statement stmt=con.createStatement(); 30 ResultSet rsst=stmt.executeQuery("select * from User_Student where clas='"+clas+"'"); 31 while(rsst.next()) { 32 StudentBean st=new StudentBean(); 33 st.setId(rsst.getString(1)); 34 st.setName(rsst.getString(2)); 35 st.setSex(rsst.getString(3)); 36 st.setYard(rsst.getString(4)); 37 st.setClas(rsst.getString(5)); 38 list.add(st); 39 flag=1; 40 } 41 } catch (SQLException e) { 42 // TODO Auto-generated catch block 43 e.printStackTrace(); 44 } 45 46 } 47 if(flag==0) { 48 System.out.println(1111111); 49 request.getSession().setAttribute("message", "查无此班！"); 50 request.getRequestDispatcher("ShowStudent").forward(request,response); 51 }else { 52 request.getSession().setAttribute("list", list); 53 System.out.println(1); 54 request.getRequestDispatcher("ShowStudent.jsp").forward(request,response); 55 } 56 } 57 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 58 doGet(request, response); 59 } 60 61 }
教师信息界面：
从教师表中读取教师信息存储到TeacherBean中，传输到jsp显示，大体同学生信息功能页相似
显示教师信息：
1 package p1; 2 3 public class TeacherBean { 4 private String sex,name,yard,call,id; 5 public String getId() { 6 return id; 7 } 8 public void setId(String id) { 9 this.id = id; 10 } 11 public String getSex() { 12 return sex; 13 } 14 public void setSex(String sex) { 15 this.sex = sex; 16 } 17 public String getName() { 18 return name; 19 } 20 public void setName(String name) { 21 this.name = name; 22 } 23 public String getYard() { 24 return yard; 25 } 26 public void setYard(String yard) { 27 this.yard = yard; 28 } 29 public String getCall() { 30 return call; 31 } 32 public void setCall(String call) { 33 this.call = call; 34 } 35 }
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowTeacher") 16 public class ShowTeacher extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowTeacher() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 ArrayList<TeacherBean> arr=new ArrayList<TeacherBean>(); 23 Link l=new Link(); 24 try { 25 Connection con=l.lin("Class_Select"); 26 Statement stmt=con.createStatement(); 27 String s="select * from User_Teacher"; 28 ResultSet rsst=stmt.executeQuery(s); 29 while(rsst.next()) { 30 TeacherBean ub=new TeacherBean(); 31 ub.setId(rsst.getString(1)); 32 ub.setName(rsst.getString(2)); 33 ub.setSex(rsst.getString(3)); 34 ub.setYard(rsst.getString(4)); 35 ub.setCall(rsst.getString(5)); 36 arr.add(ub); 37 } 38 } catch (SQLException e) { 39 e.printStackTrace(); 40 } 41 request.setAttribute("list", arr); 42 request.getRequestDispatcher("ShowTeacher.jsp").forward(request, response); 43 } 44 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 45 doGet(request, response); 46 } 47 48 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 170px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function Update(id){ 136 window.location.href="ShowTeaSession?id="+id; 137 } 138 function Borrow(id){ 139 var sen=confirm("确认删除？"); 140 if(sen==true) 141 window.location.href="DeleteTeacher?id="+id; 142 } 143 </script> 144 </head> 145 <body onload="Onload()"> 146 <div id="d1">学生信息管理系统</div> 147 <div id="left"> 148 <ul> 149 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 150 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 151 <li><a href="StudentIn.jsp">学生信息录入</a></li> 152 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 153 <li><a href="AddUser.jsp">用户录入</a></li> 154 <li><a href="ShowStudent">学生信息</a></li> 155 <li><a href="ShowTeacher">教师信息</a></li> 156 <li><a href="ShowUser">用户信息</a></li> 157 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 158 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 159 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 160 <li><a href="Update.jsp">修改信息</a></li> 161 <li><a href="ShowClass">选课</a></li> 162 <li><a href="HaveSelected">已选课</a> 163 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 164 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 165 <li><a href="AddClass.jsp">添加课程</a></li> 166 <li><a href="ShowTeaClas">自己的课程</a></li> 167 <%} %> 168 <li><a href="UpdatePassword.jsp">修改密码</a></li> 169 </ul> 170 </div> 171 <div id="right"> 172 <table> 173 <tr> 174 175 <td>按姓名查找：</td> 176 <form action="SearchTeaByName"> 177 <td><input type="text" name="name"></td> 178 <td><button>查询</button></td> 179 </form> 180 <td>按学院查找：</td> 181 <form action="SearchTeaByClas"> 182 <td><input type="text" name="clas"></td> 183 <td><button>查询</button></td></form> 184 185 </tr> 186 <c:forEach items="${list}" var="list"> 187 <tr> 188 <td>姓名：${list.name}</td> 189 <td>性别：${list.sex}</td> 190 <td>工号：${list.id}</td> 191 <td>学院：${list.yard}</td> 192 <td>职称：${list.call}</td> 193 <td><button onclick="Update(${list.id})">修改</button></td> 194 <td><button onclick="Borrow(${list.id})">删除</button></td> 195 </tr> 196 </c:forEach> 197 </table> 198 </div> 199 </body> 200 </html>
显示教师详细信息：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowTeaSession") 16 public class ShowTeaSession extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowTeaSession() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 Link l=new Link(); 23 String id=request.getParameter("id"); 24 ArrayList<TeacherBean> list=new ArrayList<TeacherBean>(); 25 try { 26 Connection con=l.lin("Class_Select"); 27 Statement stmt=con.createStatement(); 28 String s="select * from User_Teacher where id="+id; 29 ResultSet rsst=stmt.executeQuery(s); 30 while(rsst.next()) { 31 TeacherBean bk=new TeacherBean(); 32 bk.setId(rsst.getString("id")); 33 bk.setName(rsst.getString("name")); 34 bk.setSex(rsst.getString("sex")); 35 bk.setYard(rsst.getString("yard")); 36 bk.setCall(rsst.getString("call")); 37 list.add(bk); 38 } 39 stmt.close(); 40 rsst.close(); 41 con.close(); 42 } catch (SQLException e) { 43 // TODO Auto-generated catch block 44 e.printStackTrace(); 45 } 46 request.setAttribute("list", list); 47 request.getRequestDispatcher("TeaShowMySession.jsp").forward(request, response); 48 } 49 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 50 // TODO Auto-generated method stub 51 doGet(request, response); 52 } 53 54 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 270px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function UpdateYard(id){ 136 var word=prompt("请输入修改后的结果："); 137 word=encodeURIComponent(word); 138 var sentence=confirm("是否确认修改！"); 139 if(sentence==true) 140 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=yard"; 141 } 142 function UpdateName(id){ 143 var word=prompt("请输入修改后的结果："); 144 var sentence=confirm("是否确认修改！"); 145 word=encodeURIComponent(word); 146 if(sentence==true) 147 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=name"; 148 } 149 function UpdateSex(id){ 150 var word=prompt("请输入修改后的结果："); 151 var sentence=confirm("是否确认修改！"); 152 word=encodeURIComponent(word); 153 if(sentence==true) 154 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=sex"; 155 } 156 function UpdateClas(id){ 157 var word=prompt("请输入修改后的结果："); 158 var sentence=confirm("是否确认修改！"); 159 word=encodeURIComponent(word); 160 if(sentence==true) 161 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=clas"; 162 } 163 164 </script> 165 </head> 166 <body onload="Onload()"> 167 <div id="d1">学生信息管理系统</div> 168 <div id="left"> 169 <ul> 170 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 171 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 172 <li><a href="StudentIn.jsp">学生信息录入</a></li> 173 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 174 <li><a href="AddUser.jsp">用户录入</a></li> 175 <li><a href="ShowStudent">学生信息</a></li> 176 <li><a href="ShowTeacher">教师信息</a></li> 177 <li><a href="ShowUser">用户信息</a></li> 178 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 179 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 180 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 181 <li><a href="Update.jsp">修改信息</a></li> 182 <li><a href="ShowClass">选课</a></li> 183 <li><a href="HaveSelected">已选课</a> 184 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 185 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 186 <li><a href="AddClass.jsp">添加课程</a></li> 187 <li><a href="ShowTeaClas">自己的课程</a></li> 188 <%} %> 189 <li><a href="UpdatePassword.jsp">修改密码</a></li> 190 </ul> 191 </div> 192 <div id="right"> 193 <table> 194 <c:forEach items="${list}" var="list"> 195 <tr> 196 <td>工号：${list.id}</td> 197 </tr> 198 <tr> 199 <td>姓名：${list.name}</td> 200 </tr> 201 <tr> 202 <td>性别：${list.sex}</td> 203 </tr> 204 <tr> 205 <td>学院：${list.yard}</td> 206 </tr><tr> 207 <td>职称：${list.call}</td> 208 </tr> 209 </c:forEach> 210 </table> 211 </div> 212 </body> 213 </html>
删除：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.SQLException; 6 import java.sql.Statement; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 @WebServlet("/DeleteTeacher") 14 public class DeleteTeacher extends HttpServlet { 15 private static final long serialVersionUID = 1L; 16 public DeleteTeacher() { 17 super(); 18 } 19 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 20 String id=request.getParameter("id"); 21 Link l=new Link(); 22 try { 23 Connection con=l.lin("Class_Select"); 24 Statement stmt=con.createStatement(); 25 String s="delete User_Teacher where id='"+id+"'"; 26 stmt.executeUpdate(s); 27 } catch (SQLException e) { 28 e.printStackTrace(); 29 } 30 request.getSession().setAttribute("message", "删除成功！"); 31 request.getRequestDispatcher("ShowTeacher").forward(request, response); 32 } 33 34 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 35 doGet(request, response); 36 } 37 38 }
查询：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/SearchTeaByName") 16 public class SearchTeaByName extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public SearchTeaByName() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String name=request.getParameter("name"); 23 ArrayList<TeacherBean> list=new ArrayList<>(); 24 int flag=0; 25 System.out.println(name); 26 if(name!=""&&name!=null) { 27 Link l=new Link(); 28 try { 29 Connection con=l.lin("Class_Select"); 30 Statement stmt=con.createStatement(); 31 ResultSet rsst=stmt.executeQuery("select * from User_Teacher where name='"+name+"'"); 32 while(rsst.next()) { 33 TeacherBean st=new TeacherBean(); 34 st.setId(rsst.getString(1)); 35 st.setName(rsst.getString(2)); 36 st.setSex(rsst.getString(3)); 37 st.setYard(rsst.getString(4)); 38 st.setCall(rsst.getString(5)); 39 list.add(st); 40 flag=1; 41 } 42 } catch (SQLException e) { 43 // TODO Auto-generated catch block 44 e.printStackTrace(); 45 } 46 47 } 48 if(flag==0) { 49 System.out.println(1111111); 50 request.getSession().setAttribute("message", "查无此人！"); 51 request.getRequestDispatcher("ShowTeacher").forward(request,response); 52 }else { 53 request.getSession().setAttribute("list", list); 54 System.out.println(1); 55 request.getRequestDispatcher("ShowTeacher.jsp").forward(request,response); 56 } 57 } 58 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 59 doGet(request, response); 60 } 61 62 }
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/SearchTeaByClas") 16 public class SearchTeaByClas extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public SearchTeaByClas() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String clas=request.getParameter("clas"); 23 ArrayList<TeacherBean> list=new ArrayList<>(); 24 int flag=0; 25 if(clas!=""&&clas!=null) { 26 Link l=new Link(); 27 try { 28 Connection con=l.lin("Class_Select"); 29 Statement stmt=con.createStatement(); 30 ResultSet rsst=stmt.executeQuery("select * from User_Teacher where yard='"+clas+"'"); 31 while(rsst.next()) { 32 TeacherBean st=new TeacherBean(); 33 st.setId(rsst.getString(1)); 34 st.setName(rsst.getString(2)); 35 st.setSex(rsst.getString(3)); 36 st.setYard(rsst.getString(4)); 37 st.setCall(rsst.getString(5)); 38 list.add(st); 39 flag=1; 40 } 41 } catch (SQLException e) { 42 // TODO Auto-generated catch block 43 e.printStackTrace(); 44 } 45 46 } 47 if(flag==0) { 48 System.out.println(1111111); 49 request.getSession().setAttribute("message", "查无此系！"); 50 request.getRequestDispatcher("ShowTeacher").forward(request,response); 51 }else { 52 request.getSession().setAttribute("list", list); 53 System.out.println(1); 54 request.getRequestDispatcher("ShowTeacher.jsp").forward(request,response); 55 } 56 } 57 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 58 doGet(request, response); 59 } 60 61 }
用户信息界面：
显示所有可登录此系统的账户，可对用户信息进行删除，但不可对root类型用户操作
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowUser") 16 public class ShowUser extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowUser() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 ArrayList<UserBean> arr=new ArrayList<UserBean>(); 23 Link l=new Link(); 24 try { 25 Connection con=l.lin("Class_Select"); 26 Statement stmt=con.createStatement(); 27 String s="select * from userr"; 28 ResultSet rsst=stmt.executeQuery(s); 29 while(rsst.next()) { 30 UserBean ub=new UserBean(); 31 ub.setUsername(rsst.getString(1)); 32 ub.setPassword(rsst.getString(2)); 33 ub.setType(rsst.getString(3)); 34 arr.add(ub); 35 } 36 } catch (SQLException e) { 37 e.printStackTrace(); 38 } 39 request.setAttribute("list", arr); 40 request.getRequestDispatcher("ShowUser.jsp").forward(request, response); 41 } 42 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 43 doGet(request, response); 44 } 45 46 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1100px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 270px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function Borrow(id){ 136 window.location.href="DeleteUser?id="+id; 137 } 138 139 </script> 140 </head> 141 <body onload="Onload()"> 142 <div id="d1">学生信息管理系统</div> 143 <div id="left"> 144 <ul> 145 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 146 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 147 <li><a href="StudentIn.jsp">学生信息录入</a></li> 148 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 149 <li><a href="AddUser.jsp">用户录入</a></li> 150 <li><a href="ShowStudent">学生信息</a></li> 151 <li><a href="ShowTeacher">教师信息</a></li> 152 <li><a href="ShowUser">用户信息</a></li> 153 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 154 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 155 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 156 <li><a href="Update.jsp">修改信息</a></li> 157 <li><a href="ShowClass">选课</a></li> 158 <li><a href="HaveSelected">已选课</a> 159 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 160 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 161 <li><a href="AddClass.jsp">添加课程</a></li> 162 <li><a href="ShowTeaClas">自己的课程</a></li> 163 <%} %> 164 <li><a href="UpdatePassword.jsp">修改密码</a></li> 165 </ul> 166 </div> 167 <div id="right"> 168 <table> 169 <c:forEach items="${list}" var="list"> 170 <tr> 171 <td>账号：${list.username}</td> 172 <td>密码： ${list.password}</td> 173 <td>账号类型：${list.type}</td> 174 <c:if test="${list.username!='root'}"> 175 <td><button onclick="Borrow(${list.username})">删除</button></td></c:if> 176 </tr> 177 </c:forEach> 178 </table> 179 </div> 180 </body> 181 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.SQLException; 6 import java.sql.Statement; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 @WebServlet("/DeleteUser") 14 public class DeleteUser extends HttpServlet { 15 private static final long serialVersionUID = 1L; 16 public DeleteUser() { 17 super(); 18 } 19 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 20 String username=request.getParameter("id"); 21 Link l=new Link(); 22 try { 23 Connection con=l.lin("Class_Select"); 24 Statement stmt=con.createStatement(); 25 String s="delete userr where username='"+username+"'"; 26 stmt.executeUpdate(s); 27 } catch (SQLException e) { 28 e.printStackTrace(); 29 } 30 request.getSession().setAttribute("message", "删除成功！"); 31 request.getRequestDispatcher("ShowUser").forward(request, response); 32 } 33 34 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 35 doGet(request, response); 36 } 37 38 }
统计学生信息界面：
对学生信息进行筛选，不需要的选框不填即可，在AnalyseServal中对各种搜索情况进行判断
例如查询性别为女的学生：
显示查询结果与结果数量：
查询界面：
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 270px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function Borrow(id){ 136 window.location.href="DeleteStudent?id="+id; 137 } 138 </script> 139 </head> 140 <body onload="Onload()"> 141 <div id="d1">学生信息管理系统</div> 142 <div id="left"> 143 <ul> 144 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 145 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 146 <li><a href="StudentIn.jsp">学生信息录入</a></li> 147 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 148 <li><a href="AddUser.jsp">用户录入</a></li> 149 <li><a href="ShowStudent">学生信息</a></li> 150 <li><a href="ShowTeacher">教师信息</a></li> 151 <li><a href="ShowUser">用户信息</a></li> 152 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 153 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 154 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 155 <li><a href="Update.jsp">修改信息</a></li> 156 <li><a href="ShowClass">选课</a></li> 157 <li><a href="HaveSelected">已选课</a> 158 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 159 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 160 <li><a href="AddClass.jsp">添加课程</a></li> 161 <li><a href="ShowTeaClas">自己的课程</a></li> 162 <%} %> 163 <li><a href="UpdatePassword.jsp">修改密码</a></li> 164 </ul> 165 </div> 166 <div id="right"> 167 <form action="AnalyseServal"> 168 <table> 169 <tr><td colspan="2">综合筛选</td></tr> 170 <tr> 171 <td>学院：</td> 172 <td><input type="text" name="yard"></td> 173 </tr><tr> 174 <td>班级：</td> 175 <td><input type="text" name="clas"></td> 176 </tr> 177 <tr> 178 <td>性别：</td> 179 <td><input type="radio" name="sex" id="sex" value="男">男   <input type="radio" name="sex" id="sex" value="女">女</td> 180 </tr> 181 <tr> 182 <td>姓名：</td> 183 <td colspan="0.5"><input type="text" name="name"></td><td conspan="0.5"><input type="radio" name="type" id="type" value="精确">精确   <input type="radio" name="type" id="type" value="模糊">模糊</td> 184 </tr> 185 <tr><td colspan="3"><button type="submit">查询</button></td></tr> 186 </table> 187 </form> 188 </div> 189 </body> 190 </html>
查询：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 16 @WebServlet("/AnalyseServal") 17 public class AnalyseServal extends HttpServlet { 18 private static final long serialVersionUID = 1L; 19 20 public AnalyseServal() { 21 super(); 22 } 23 24 protected void doGet(HttpServletRequest request, HttpServletResponse response) 25 throws ServletException, IOException { 26 String name = request.getParameter("name"); 27 String yard = request.getParameter("yard"); 28 String clas = request.getParameter("clas"); 29 String[] sexx = request.getParameterValues("sex"); 30 String[] typee = request.getParameterValues("type"); 31 String sex = null; 32 String type = null; 33 int number = 0; 34 ArrayList<StudentBean> list = new ArrayList<StudentBean>(); 35 if (sexx != null) { 36 for (int i = 0; i < sexx.length; i++) { 37 38 if (sexx[i] != null) 39 sex = sexx[i]; 40 } 41 } 42 if (typee != null) { 43 for (int i = 0; i < typee.length; i++) { 44 45 if (typee[i] != null) 46 type = typee[i]; 47 48 } 49 } 50 51 String s = ""; 52 if (name == null && yard == null && clas == null && sex == null) { 53 s = "select * from User_Student"; 54 } else { 55 s = "select * from User_Student where"; 56 if (name != null && name != "") { 57 if (type != null) { 58 if (type.equals("精确")) 59 s += (" name='" + name + "'"); 60 else 61 s += (" name like '%" + name + "%'"); 62 } else 63 s += (" name like '%" + name + "%'"); 64 65 if (yard != null && yard != "") { 66 s += (" and yard like'%" + yard + "%'"); 67 } 68 if (clas != null && clas != "") { 69 s += (" and clas like'%" + clas + "%'"); 70 } 71 if (sex != null && sex != "") { 72 s += (" and sex='" + sex + "'"); 73 } 74 } else { 75 if (yard != null && yard != "") { 76 s += (" yard like'%" + yard + "%'"); 77 if (clas != null && clas != "") { 78 s += (" and clas like'%" + clas + "%'"); 79 } 80 if (sex != null && sex != "") { 81 s += (" and sex='" + sex + "'"); 82 } 83 } else { 84 if (clas != null && clas != "") { 85 s += (" clas like'%" + clas + "%'"); 86 if (sex != null && sex != "") { 87 s += (" and sex='" + sex + "'"); 88 } 89 } else { 90 if (sex != null && sex != "") { 91 s += (" sex='" + sex + "'"); 92 } 93 } 94 } 95 } 96 } 97 Link l = new Link(); 98 try { 99 System.out.println(s); 100 Connection con = l.lin("Class_Select"); 101 Statement stmt = con.createStatement(); 102 ResultSet rsst = stmt.executeQuery(s); 103 while (rsst.next()) { 104 StudentBean sb = new StudentBean(); 105 sb.setId(rsst.getString(1)); 106 sb.setName(rsst.getString(2)); 107 sb.setSex(rsst.getString(3)); 108 sb.setYard(rsst.getString(4)); 109 sb.setClas(rsst.getString(5)); 110 list.add(sb); 111 number++; 112 } 113 } catch (SQLException e) { 114 // TODO Auto-generated catch block 115 e.printStackTrace(); 116 } 117 request.getSession().setAttribute("list", list); 118 request.getSession().setAttribute("number", number); 119 request.getRequestDispatcher("AnalyseResult.jsp").forward(request, response); 120 } 121 122 protected void doPost(HttpServletRequest request, HttpServletResponse response) 123 throws ServletException, IOException { 124 // TODO Auto-generated method stub 125 doGet(request, response); 126 } 127 128 }
查询结果：
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 270px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function Borrow(id){ 136 window.location.href="DeleteStudent?id="+id; 137 } 138 </script> 139 </head> 140 <body onload="Onload()"> 141 <div id="d1">学生信息管理系统</div> 142 <div id="left"> 143 <ul> 144 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 145 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 146 <li><a href="StudentIn.jsp">学生信息录入</a></li> 147 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 148 <li><a href="AddUser.jsp">用户录入</a></li> 149 <li><a href="ShowStudent">学生信息</a></li> 150 <li><a href="ShowTeacher">教师信息</a></li> 151 <li><a href="ShowUser">用户信息</a></li> 152 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 153 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 154 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 155 <li><a href="Update.jsp">修改信息</a></li> 156 <li><a href="ShowClass">选课</a></li> 157 <li><a href="HaveSelected">已选课</a> 158 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 159 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 160 <li><a href="AddClass.jsp">添加课程</a></li> 161 <li><a href="ShowTeaClas">自己的课程</a></li> 162 <%} %> 163 <li><a href="UpdatePassword.jsp">修改密码</a></li> 164 </ul> 165 </div> 166 <div id="right"> 167 <table> 168 <tr><td colspan="5">查询结果:</td><td colspan="3">${number}</td></tr> 169 <c:forEach items="${list}" var="list"> 170 <tr> 171 <td>学院：${list.yard}</td> 172 <td>班级：${list.clas}</td> 173 <td>姓名：${list.name}</td> 174 <td>性别：${list.sex}</td> 175 <td>学号：${list.id}</td> 176 <td colspan="2"><button onclick="Borrow(${list.id})">删除</button></td> 177 </tr> 178 </c:forEach> 179 </table> 180 </div> 181 </body> 182 </html>
修改密码：
输入原密码，新密码并确认密码，判断新密码与原密码相同时不能修改，新密码与确认密码不相同时也不能修改
在servlet中判断原密码错误并返回修改密码界面
成功修改：
教师功能页：
我的信息：从教师表中读取教师本人信息存储到Bean中传输到jsp，不提供修改
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowTeaSession") 16 public class ShowTeaSession extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowTeaSession() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 Link l=new Link(); 23 String id=request.getParameter("id"); 24 ArrayList<TeacherBean> list=new ArrayList<TeacherBean>(); 25 try { 26 Connection con=l.lin("Class_Select"); 27 Statement stmt=con.createStatement(); 28 String s="select * from User_Teacher where id="+id; 29 ResultSet rsst=stmt.executeQuery(s); 30 while(rsst.next()) { 31 TeacherBean bk=new TeacherBean(); 32 bk.setId(rsst.getString("id")); 33 bk.setName(rsst.getString("name")); 34 bk.setSex(rsst.getString("sex")); 35 bk.setYard(rsst.getString("yard")); 36 bk.setCall(rsst.getString("call")); 37 list.add(bk); 38 } 39 stmt.close(); 40 rsst.close(); 41 con.close(); 42 } catch (SQLException e) { 43 // TODO Auto-generated catch block 44 e.printStackTrace(); 45 } 46 request.setAttribute("list", list); 47 request.getRequestDispatcher("TeaShowMySession.jsp").forward(request, response); 48 } 49 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 50 // TODO Auto-generated method stub 51 doGet(request, response); 52 } 53 54 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 5 <!DOCTYPE html> 6 <html> 7 <head> 8 <meta charset="UTF-8"> 9 <title>Document</title> 10 <style type="text/css"> 11 #d1 { 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 20 div ul { 21 vertical-align: top; 22 list-style-type: none; 23 margin: 0px; 24 vertical-align: left; 25 width: 200px; 26 padding: 0px; 27 border-top: 20px solid #F8A0E7; 28 border-bottom: 20px solid #F8A0E7; 29 } 30 31 .headd { 32 font-family: "微软雅黑"; 33 lighting-color: red; 34 font-size: 20px; 35 } 36 37 div li a { 38 height: 80px; 39 display: block; 40 padding: 0px 0px 0px 0em; 41 text-decoration: none; 42 border-left: 20px solid pink; 43 } 44 45 div li a:link, div li a:visited { 46 background-color: #F0F0F0; 47 color: #461737; 48 } 49 50 div li a:hover { 51 background-color: green; 52 color: gray; 53 } 54 55 div li a:active { 56 background-color: pink; 57 } 58 59 #left { 60 float: left; 61 } 62 63 #right { 64 height: 400px; 65 width: 1100px; 66 float: left; 67 } 68 69 #inp { 70 float: left; 71 height: 400px; 72 width: 1202px; 73 } 74 75 .btn { 76 float: left; 77 } 78 79 table { 80 width: 1300px; 81 height: 500px; 82 border-collapse: collapse; 83 margin: 0 auto; 84 text-align: center; 85 } 86 87 table td, table th { 88 border: 1px solid #cad9ea; 89 color: #666; 90 height: 30px; 91 } 92 93 table thead th { 94 background-color: #CCE8EB; 95 width: 100px; 96 } 97 98 table tr:nth-child(odd) { 99 background: #fff; 100 } 101 102 table tr:nth-child(even) { 103 background: #F5FAFA; 104 } 105 106 button { /* 按钮美化 */ 107 width: 270px; /* 宽度 */ 108 height: 40px; /* 高度 */ 109 border-width: 0px; /* 边框宽度 */ 110 border-radius: 3px; /* 边框半径 */ 111 background: #1E90FF; /* 背景颜色 */ 112 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 113 outline: none; /* 不显示轮廓线 */ 114 font-family: Microsoft YaHei; /* 设置字体 */ 115 color: white; /* 字体颜色 */ 116 font-size: 17px; /* 字体大小 */ 117 } 118 119 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 120 background: #5599FF; 121 } 122 </style> 123 <% 124 String message = (String) session.getAttribute("message"); 125 if (message != null) { 126 %> 127 <script type="text/javascript"> 128 alert("<%=message%>"); 129 </script> 130 <% 131 session.removeAttribute("message"); 132 } 133 %> 134 <script type="text/javascript"> 135 function UpdateYard(id){ 136 var word=prompt("请输入修改后的结果："); 137 word=encodeURIComponent(word); 138 var sentence=confirm("是否确认修改！"); 139 if(sentence==true) 140 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=yard"; 141 } 142 function UpdateName(id){ 143 var word=prompt("请输入修改后的结果："); 144 var sentence=confirm("是否确认修改！"); 145 word=encodeURIComponent(word); 146 if(sentence==true) 147 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=name"; 148 } 149 function UpdateSex(id){ 150 var word=prompt("请输入修改后的结果："); 151 var sentence=confirm("是否确认修改！"); 152 word=encodeURIComponent(word); 153 if(sentence==true) 154 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=sex"; 155 } 156 function UpdateClas(id){ 157 var word=prompt("请输入修改后的结果："); 158 var sentence=confirm("是否确认修改！"); 159 word=encodeURIComponent(word); 160 if(sentence==true) 161 window.location.href="UpdateStudent?id="+id+"&word="+word+"&type=clas"; 162 } 163 164 </script> 165 </head> 166 <body onload="Onload()"> 167 <div id="d1">学生信息管理系统</div> 168 <div id="left"> 169 <ul> 170 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 171 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 172 <li><a href="StudentIn.jsp">学生信息录入</a></li> 173 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 174 <li><a href="AddUser.jsp">用户录入</a></li> 175 <li><a href="ShowStudent">学生信息</a></li> 176 <li><a href="ShowTeacher">教师信息</a></li> 177 <li><a href="ShowUser">用户信息</a></li> 178 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 179 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 180 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 181 <li><a href="Update.jsp">修改信息</a></li> 182 <li><a href="ShowClass">选课</a></li> 183 <li><a href="HaveSelected">已选课</a> 184 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 185 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 186 <li><a href="AddClass.jsp">添加课程</a></li> 187 <li><a href="ShowTeaClas">自己的课程</a></li> 188 <%} %> 189 <li><a href="UpdatePassword.jsp">修改密码</a></li> 190 </ul> 191 </div> 192 <div id="right"> 193 <table> 194 <c:forEach items="${list}" var="list"> 195 <tr> 196 <td>工号：${list.id}</td> 197 </tr> 198 <tr> 199 <td>姓名：${list.name}</td> 200 </tr> 201 <tr> 202 <td>性别：${list.sex}</td> 203 </tr> 204 <tr> 205 <td>学院：${list.yard}</td> 206 </tr><tr> 207 <td>职称：${list.call}</td> 208 </tr> 209 </c:forEach> 210 </table> 211 </div> 212 </body> 213 </html>
添加课程：
输入课程信息，添加课程到Clas表
添加成功后跳回添加课程界面
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html> 4 <html> 5 <head> 6 <meta charset="UTF-8"> 7 <title>Document</title> 8 <style type="text/css"> 9 10 #d1{ 11 text-align: center; 12 padding-top: 40px; 13 font-family: "微软雅黑"; 14 font-size: 40px; 15 background-color: #DDDDDD; 16 height: 100px; 17 } 18 div ul{ 19 vertical-align: top; 20 list-style-type: none; 21 margin: 0px; 22 vertical-align: left; 23 width: 200px; 24 padding: 0px; 25 border-top: 20px solid #F8A0E7; 26 border-bottom :20px solid #F8A0E7; 27 } 28 .headd{ 29 font-family: "微软雅黑"; 30 lighting-color: red; 31 font-size: 20px; 32 } 33 div li a{ 34 height: 80px; 35 display: block; 36 padding: 0px 0px 0px 0em; 37 text-decoration: none; 38 border-left: 20px solid pink; 39 } 40 div li a:link,div li a:visited{ 41 background-color: #F0F0F0; 42 color: #461737; 43 } 44 div li a:hover{ 45 background-color: green; 46 color: gray; 47 } 48 div li a:active{ 49 background-color: pink; 50 } 51 #left{ 52 float:left; 53 } 54 #right{ 55 height:400px; 56 width:1100px; 57 float:left; 58 } 59 #inp{ 60 float:left; 61 height:400px; 62 width:1202px; 63 } 64 .btn{ 65 float:left; 66 } 67 table 68 { 69 width:1100px; 70 height:500px; 71 border-collapse: collapse; 72 margin: 0 auto; 73 text-align: center; 74 } 75 table td, table th 76 { 77 border: 1px solid #cad9ea; 78 color: #666; 79 height: 30px; 80 } 81 table thead th 82 { 83 background-color: #CCE8EB; 84 width: 100px; 85 } 86 table tr:nth-child(odd) 87 { 88 background: #fff; 89 } 90 table tr:nth-child(even) 91 { 92 background: #F5FAFA; 93 } 94 95 button { /* 按钮美化 */ 96 width: 270px; /* 宽度 */ 97 height: 40px; /* 高度 */ 98 border-width: 0px; /* 边框宽度 */ 99 border-radius: 3px; /* 边框半径 */ 100 background: #1E90FF; /* 背景颜色 */ 101 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 102 outline: none; /* 不显示轮廓线 */ 103 font-family: Microsoft YaHei; /* 设置字体 */ 104 color: white; /* 字体颜色 */ 105 font-size: 17px; /* 字体大小 */ 106 } 107 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 108 background: #5599FF; 109 .headd{ 110 font-family: "微软雅黑"; 111 lighting-color: red; 112 font-size: 20px; 113 } 114 div li a{ 115 height: 80px; 116 display: block; 117 padding: 0px 0px 0px 0em; 118 text-decoration: none; 119 border-left: 20px solid pink; 120 } 121 div li a:link,div li a:visited{ 122 background-color: #F0F0F0; 123 color: #461737; 124 } 125 div li a:hover{ 126 background-color: green; 127 color: gray; 128 } 129 div li a:active{ 130 background-color: pink; 131 } 132 #left{ 133 float:left; 134 } 135 #right{ 136 height:400px; 137 width:1100px; 138 float:left; 139 border:1px solid green; 140 } 141 #inp{ 142 float:left; 143 height:400px; 144 width:1202px; 145 } 146 .btn{ 147 float:left; 148 } 149 </style> 150 <%String message=(String)session.getAttribute("message"); 151 if(message!=null){%> 152 <script type="text/javascript"> 153 alert("<%=message%>"); 154 </script> 155 <% session.removeAttribute("message");} 156 157 %> 158 159 160 <script type="text/javascript"> 161 function Out(){ 162 var title=document.getElementById("title").value; 163 if(title=="") { 164 alert("标题不能为空！！！"); 165 return false; 166 } 167 var text=encodeURIComponent(document.getElementById("inp").value); 168 var s="SaveAritical?text="+text+"&type=Document&title="+encodeURIComponent(title); 169 window.location.href=s; 170 } 171 function Save(){ 172 var title=document.getElementById("title").value; 173 if(title=="") { 174 alert("标题不能为空！！！"); 175 return false; 176 } 177 var text=encodeURIComponent(document.getElementById("inp").value); 178 var s="OutAritical?text="+text+"&type=Document&title="+encodeURIComponent(title); 179 window.location.href=s; 180 } 181 182 183 </script> 184 </head> 185 <body onload="Onload()"> 186 <div id="d1">图书管理系统</div> 187 <div id="left"> 188 <ul> 189 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 190 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 191 <li><a href="StudentIn.jsp">学生信息录入</a></li> 192 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 193 <li><a href="AddUser.jsp">用户录入</a></li> 194 <li><a href="ShowStudent">学生信息</a></li> 195 <li><a href="ShowTeacher">教师信息</a></li> 196 <li><a href="ShowUser">用户信息</a></li> 197 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 198 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 199 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 200 <li><a href="Update.jsp">修改信息</a></li> 201 <li><a href="ShowClass">选课</a></li> 202 <li><a href="HaveSelected">已选课</a> 203 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 204 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 205 <li><a href="AddClass.jsp">添加课程</a></li> 206 <li><a href="ShowTeaClas">自己的课程</a></li> 207 <%} %> 208 <li><a href="UpdatePassword.jsp">修改密码</a></li> 209 </ul> 210 </div> 211 <div id="right"> 212 <form action="AddClass"> 213 <table> 214 <tr> 215 <td>课程名称：</td><td><input type="text" name="name" id="name"></td> 216 </tr> 217 <tr> 218 <td>课程容量：</td><td><input type="text" name="number" id="number"></td></tr> 219 <tr> 220 <td colspan="2"><button type="submit" value="提 交">提交</button></td></tr> 221 </table> 222 </form> 223 </div> 224 </body> 225 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 9 import javax.servlet.ServletException; 10 import javax.servlet.annotation.WebServlet; 11 import javax.servlet.http.HttpServlet; 12 import javax.servlet.http.HttpServletRequest; 13 import javax.servlet.http.HttpServletResponse; 14 @WebServlet("/AddClass") 15 public class AddClass extends HttpServlet { 16 private static final long serialVersionUID = 1L; 17 public AddClass() { 18 super(); 19 // TODO Auto-generated constructor stub 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String name=request.getParameter("name"); 23 String number=request.getParameter("number"); 24 String teacherid=(String)request.getSession().getAttribute("userid"); 25 Link l=new Link(); 26 try { 27 Connection con=l.lin("Class_Select"); 28 Statement stmt=con.createStatement(); 29 String s="select * from Clas"; 30 ResultSet rsst=stmt.executeQuery(s); 31 int num=2020001; 32 while(rsst.next()) { 33 num=Integer.parseInt(rsst.getString("id"))+1; 34 } 35 rsst.close(); 36 s="insert into Clas values ('"+num+"','"+name+"','"+number+"','"+teacherid+"',null,0)"; 37 System.out.println(s); 38 stmt.executeUpdate(s); 39 stmt.close(); 40 con.close(); 41 } catch (SQLException e) { 42 e.printStackTrace(); 43 } 44 request.getSession().setAttribute("message", "添加成功！"); 45 request.getRequestDispatcher("AddClass.jsp").forward(request, response); 46 } 47 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 48 doGet(request, response); 49 } 50 51 }
显示课程：
从Clas表中读取自己的课程进行显示：
点击删除课程可对课程进行删除。
修改密码界面同管理员修改密码一致
学生功能页：
我的信息同教师信息页相同：
选课界面：从Clas表中读取课程信息，存储到ClassBean中传到jsp
点击选课，将学生id存储到asker中，选课人数加一,选课成功后跳回选课界面
课程：
1 package p1; 2 3 public class ClasBean { 4 private String id; 5 private String name; 6 private String number; 7 private String nownumber; 8 private String teacher; 9 10 public String getId() { 11 return id; 12 } 13 public void setId(String id) { 14 this.id = id; 15 } 16 public String getTeacher() { 17 return teacher; 18 } 19 public void setTeacher(String teacher) { 20 this.teacher = teacher; 21 } 22 public String getName() { 23 return name; 24 } 25 public void setName(String name) { 26 this.name = name; 27 } 28 public String getNumber() { 29 return number; 30 } 31 public String getNownumber() { 32 return nownumber; 33 } 34 public void setNumber(String number) { 35 this.number = number; 36 } 37 public void setNownumber(String nownumber) { 38 this.nownumber = nownumber; 39 } 40 41 }
显示课程：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/ShowClass") 16 public class ShowClass extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public ShowClass() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 Link l=new Link(); 23 String id=(String)request.getSession().getAttribute("userid"); 24 ArrayList<ClasBean> list=new ArrayList<ClasBean>(); 25 try { 26 Connection con=l.lin("Class_Select"); 27 Statement stmt=con.createStatement(); 28 String s="select * from Clas"; 29 ResultSet rsst=stmt.executeQuery(s); 30 while(rsst.next()) { 31 ClasBean bk=new ClasBean(); 32 bk.setId(rsst.getString("id")); 33 bk.setName(rsst.getString("name")); 34 bk.setNumber(rsst.getString("number")); 35 bk.setNownumber(rsst.getString("nownumber")); 36 bk.setTeacher(rsst.getString("teacher")); 37 System.out.println(); 38 list.add(bk); 39 } 40 stmt.close(); 41 con.close(); 42 } catch (SQLException e) { 43 // TODO Auto-generated catch block 44 e.printStackTrace(); 45 } 46 request.setAttribute("list", list); 47 request.getRequestDispatcher("SelectClass.jsp").forward(request, response); 48 } 49 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 50 // TODO Auto-generated method stub 51 doGet(request, response); 52 } 53 54 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta charset="UTF-8"> 8 <title>Document</title> 9 <style type="text/css"> 10 11 #d1{ 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 div ul{ 20 vertical-align: top; 21 list-style-type: none; 22 margin: 0px; 23 vertical-align: left; 24 width: 200px; 25 padding: 0px; 26 border-top: 20px solid #F8A0E7; 27 border-bottom :20px solid #F8A0E7; 28 } 29 .headd{ 30 font-family: "微软雅黑"; 31 lighting-color: red; 32 font-size: 20px; 33 } 34 div li a{ 35 height: 80px; 36 display: block; 37 padding: 0px 0px 0px 0em; 38 text-decoration: none; 39 border-left: 20px solid pink; 40 } 41 div li a:link,div li a:visited{ 42 background-color: #F0F0F0; 43 color: #461737; 44 } 45 div li a:hover{ 46 background-color: green; 47 color: gray; 48 } 49 div li a:active{ 50 background-color: pink; 51 } 52 #left{ 53 float:left; 54 } 55 #right{ 56 height:400px; 57 width:1100px; 58 float:left; 59 } 60 #inp{ 61 float:left; 62 height:400px; 63 width:1202px; 64 } 65 .btn{ 66 float:left; 67 } 68 table 69 { 70 width:1100px; 71 height:500px; 72 border-collapse: collapse; 73 margin: 0 auto; 74 text-align: center; 75 } 76 table td, table th 77 { 78 border: 1px solid #cad9ea; 79 color: #666; 80 height: 30px; 81 } 82 table thead th 83 { 84 background-color: #CCE8EB; 85 width: 100px; 86 } 87 table tr:nth-child(odd) 88 { 89 background: #fff; 90 } 91 table tr:nth-child(even) 92 { 93 background: #F5FAFA; 94 } 95 96 button { /* 按钮美化 */ 97 width: 270px; /* 宽度 */ 98 height: 40px; /* 高度 */ 99 border-width: 0px; /* 边框宽度 */ 100 border-radius: 3px; /* 边框半径 */ 101 background: #1E90FF; /* 背景颜色 */ 102 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 103 outline: none; /* 不显示轮廓线 */ 104 font-family: Microsoft YaHei; /* 设置字体 */ 105 color: white; /* 字体颜色 */ 106 font-size: 17px; /* 字体大小 */ 107 } 108 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 109 background: #5599FF; 110 111 </style> 112 <% 113 String message = (String) session.getAttribute("message"); 114 if (message != null) { 115 %> 116 <script type="text/javascript"> 117 alert("<%=message%>"); 118 </script> 119 <% 120 session.removeAttribute("message"); 121 } 122 %> 123 <script> 124 function ForDetail(id){ 125 window.location.href="ShowStudent?id="+id; 126 } 127 128 function ShowTeacher(id){ 129 window.location.href="ShowTeacher?id="+id; 130 } 131 function Borrow(id){ 132 window.location.href="SelectClass?id="+id; 133 } 134 135 </script> 136 </head> 137 <body onload="Onload()"> 138 <div id="d1">选课系统</div> 139 <div id="left"> 140 <ul> 141 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 142 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 143 <li><a href="StudentIn.jsp">学生信息录入</a></li> 144 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 145 <li><a href="AddUser.jsp">用户录入</a></li> 146 <li><a href="ShowStudent">学生信息</a></li> 147 <li><a href="ShowTeacher">教师信息</a></li> 148 <li><a href="ShowUser">用户信息</a></li> 149 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 150 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 151 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 152 <li><a href="ShowClass">选课</a></li> 153 <li><a href="HaveSelected">已选课</a> 154 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 155 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 156 <li><a href="AddClass.jsp">添加课程</a></li> 157 <li><a href="ShowTeaClas">自己的课程</a></li> 158 <%} %> 159 <li><a href="UpdatePassword.jsp">修改密码</a></li> 160 </ul> 161 </div> 162 <div id="right"> 163 <table> 164 <c:forEach items="${list}" var="list"> 165 <tr> 166 <td>课程编号：${list.id}</td> 167 <td>课程名称：${list.name}</td> 168 <td onclick="ShowTeacher(${list.teacher})">任课教师：${list.teacher}</td> 169 <td>选课人数：${list.nownumber}</td> 170 <td>课程容量： ${list.number}</td> 171 <td><button onclick="Borrow(${list.id})">选课</button></td> 172 </c:forEach> 173 </table> 174 </div> 175 </body> 176 </html>
选课：
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 9 import javax.servlet.ServletException; 10 import javax.servlet.annotation.WebServlet; 11 import javax.servlet.http.HttpServlet; 12 import javax.servlet.http.HttpServletRequest; 13 import javax.servlet.http.HttpServletResponse; 14 @WebServlet("/SelectClass") 15 public class SelectClass extends HttpServlet { 16 private static final long serialVersionUID = 1L; 17 public SelectClass() { 18 super(); 19 } 20 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 21 String id=request.getParameter("id"); 22 String userid=(String)request.getSession().getAttribute("userid"); 23 Link l=new Link(); 24 try { 25 Connection con=l.lin("Class_Select"); 26 Statement stmt=con.createStatement(); 27 String s="update Clas set asker=asker+'_'+'"+userid+"' where id='"+id+"'"; 28 System.out.println(s); 29 stmt.executeUpdate(s); 30 Statement stmt2=con.createStatement(); 31 String s2="update Clas set nownumber=nownumber+1 where id='"+id+"'"; 32 stmt2.executeUpdate(s2); 33 stmt2.close(); 34 stmt.close(); 35 con.close(); 36 } catch (SQLException e) { 37 // TODO Auto-generated catch block 38 e.printStackTrace(); 39 } 40 request.getSession().setAttribute("message", "选课成功！"); 41 request.getRequestDispatcher("ShowClass").forward(request, response); 42 } 43 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 44 // TODO Auto-generated method stub 45 doGet(request, response); 46 } 47 48 }
已选课：
从Clas表中读取asker，分割字符串判断并显示已选课程
已选课中可删除选中课程
选课人数减一。
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 import java.util.ArrayList; 9 10 import javax.servlet.ServletException; 11 import javax.servlet.annotation.WebServlet; 12 import javax.servlet.http.HttpServlet; 13 import javax.servlet.http.HttpServletRequest; 14 import javax.servlet.http.HttpServletResponse; 15 @WebServlet("/HaveSelected") 16 public class HaveSelected extends HttpServlet { 17 private static final long serialVersionUID = 1L; 18 public HaveSelected() { 19 super(); 20 } 21 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 22 String id=(String)request.getSession().getAttribute("userid"); 23 ArrayList<ClasBean> list=new ArrayList<>(); 24 Link l=new Link(); 25 try { 26 Connection con=l.lin("Class_Select"); 27 Statement stmt=con.createStatement(); 28 String s="select * from Clas"; 29 ResultSet rsst=stmt.executeQuery(s); 30 while(rsst.next()) { 31 String asker=rsst.getString("asker"); 32 String[] ask=asker.split("_"); 33 for(int i=0;i<ask.length;i++) { 34 if(ask[i].equals(id)) { 35 ClasBean cl=new ClasBean(); 36 cl.setId(rsst.getString("id")); 37 cl.setName(rsst.getString("name")); 38 cl.setNumber(rsst.getString("number")); 39 cl.setNownumber(rsst.getString("nownumber")); 40 cl.setTeacher(rsst.getString("teacher")); 41 list.add(cl); 42 } 43 } 44 45 } 46 rsst.close(); 47 stmt.close(); 48 con.close(); 49 } catch (SQLException e) { 50 // TODO Auto-generated catch block 51 e.printStackTrace(); 52 } 53 request.setAttribute("list", list); 54 request.getRequestDispatcher("HavenSelect.jsp").forward(request, response); 55 } 56 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 57 // TODO Auto-generated method stub 58 doGet(request, response); 59 } 60 61 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 4 <!DOCTYPE html> 5 <html> 6 <head> 7 <meta charset="UTF-8"> 8 <title>Document</title> 9 <style type="text/css"> 10 11 #d1{ 12 text-align: center; 13 padding-top: 40px; 14 font-family: "微软雅黑"; 15 font-size: 40px; 16 background-color: #DDDDDD; 17 height: 100px; 18 } 19 div ul{ 20 vertical-align: top; 21 list-style-type: none; 22 margin: 0px; 23 vertical-align: left; 24 width: 200px; 25 padding: 0px; 26 border-top: 20px solid #F8A0E7; 27 border-bottom :20px solid #F8A0E7; 28 } 29 .headd{ 30 font-family: "微软雅黑"; 31 lighting-color: red; 32 font-size: 20px; 33 } 34 div li a{ 35 height: 80px; 36 display: block; 37 padding: 0px 0px 0px 0em; 38 text-decoration: none; 39 border-left: 20px solid pink; 40 } 41 div li a:link,div li a:visited{ 42 background-color: #F0F0F0; 43 color: #461737; 44 } 45 div li a:hover{ 46 background-color: green; 47 color: gray; 48 } 49 div li a:active{ 50 background-color: pink; 51 } 52 #left{ 53 float:left; 54 } 55 #right{ 56 height:400px; 57 width:1100px; 58 float:left; 59 } 60 #inp{ 61 float:left; 62 height:400px; 63 width:1202px; 64 } 65 .btn{ 66 float:left; 67 } 68 table 69 { 70 width:1100px; 71 height:500px; 72 border-collapse: collapse; 73 margin: 0 auto; 74 text-align: center; 75 } 76 table td, table th 77 { 78 border: 1px solid #cad9ea; 79 color: #666; 80 height: 30px; 81 } 82 table thead th 83 { 84 background-color: #CCE8EB; 85 width: 100px; 86 } 87 table tr:nth-child(odd) 88 { 89 background: #fff; 90 } 91 table tr:nth-child(even) 92 { 93 background: #F5FAFA; 94 } 95 96 button { /* 按钮美化 */ 97 width: 270px; /* 宽度 */ 98 height: 40px; /* 高度 */ 99 border-width: 0px; /* 边框宽度 */ 100 border-radius: 3px; /* 边框半径 */ 101 background: #1E90FF; /* 背景颜色 */ 102 cursor: pointer; /* 鼠标移入按钮范围时出现手势 */ 103 outline: none; /* 不显示轮廓线 */ 104 font-family: Microsoft YaHei; /* 设置字体 */ 105 color: white; /* 字体颜色 */ 106 font-size: 17px; /* 字体大小 */ 107 } 108 button:hover { /* 鼠标移入按钮范围时改变颜色 */ 109 background: #5599FF; 110 111 </style> 112 <script> 113 function ForDetail(id){ 114 window.location.href="ShowStudent?id="+id; 115 } 116 117 function Borrow(id){ 118 var sentence=confirm("是否确认删除该选课？"); 119 if(sentence==true) 120 window.location.href="DeleteMyClass?id="+id; 121 } 122 123 124 </script> 125 </head> 126 <body onload="Onload()"> 127 <div id="d1">选课系统</div> 128 <div id="left"> 129 <ul> 130 <li class="headd"><a href="#" onclick="fresh()">|REFESH|</a></li> 131 <%if(((String)session.getAttribute("usertype")).equals("root")){ %> 132 <li><a href="StudentIn.jsp">学生信息录入</a></li> 133 <li><a href="TeacherIn.jsp">教师信息录入</a></li> 134 <li><a href="AddUser.jsp">用户录入</a></li> 135 <li><a href="ShowStudent">学生信息</a></li> 136 <li><a href="ShowTeacher">教师信息</a></li> 137 <li><a href="ShowUser">用户信息</a></li> 138 <li><a href="AnalyseSum.jsp">统计学生信息</a></li> 139 <%}else if(((String)session.getAttribute("usertype")).equals("stu")){%> 140 <li><a href="ShowMySession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 141 <li><a href="ShowClass">选课</a></li> 142 <li><a href="HaveSelected">已选课</a> 143 <%}else if(((String)session.getAttribute("usertype")).equals("tch")){ %> 144 <li><a href="ShowTeaSession?id=<%=session.getAttribute("userid")%>">我的信息</a></li> 145 <li><a href="AddClass.jsp">添加课程</a></li> 146 <li><a href="ShowTeaClas">自己的课程</a></li> 147 <%} %> 148 <li><a href="UpdatePassword.jsp">修改密码</a></li> 149 </ul> 150 </div> 151 <div id="right"> 152 <table> 153 <c:forEach items="${list}" var="list"> 154 <tr> 155 <td>课程编号：${list.id}</td> 156 <td onclick="ForDetail(${list.id})">课程名称：${list.name}</td> 157 <td>选课人数：${list.nownumber}</td> 158 <td>课程容量： ${list.number}</td> 159 <td><button onclick="Borrow(${list.id})">删除课程</button></td> 160 </c:forEach> 161 </table> 162 </div> 163 </body> 164 </html>
1 package p1; 2 3 import java.io.IOException; 4 import java.sql.Connection; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 import java.sql.Statement; 8 9 import javax.servlet.ServletException; 10 import javax.servlet.annotation.WebServlet; 11 import javax.servlet.http.HttpServlet; 12 import javax.servlet.http.HttpServletRequest; 13 import javax.servlet.http.HttpServletResponse; 14 @WebServlet("/DeleteMyClass") 15 public class DeleteMyClass extends HttpServlet { 16 private static final long serialVersionUID = 1L; 17 public DeleteMyClass() { 18 super(); 19 } 20 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 21 String id=request.getParameter("id"); 22 String userid=(String)request.getSession().getAttribute("userid"); 23 Link l=new Link(); 24 try { 25 Connection con=l.lin("Class_Select"); 26 Statement stmt=con.createStatement(); 27 String s="select * from Clas where id='"+id+"'"; 28 ResultSet rsst=stmt.executeQuery(s); 29 rsst.next(); 30 String asker=rsst.getString("asker"); 31 String ask="_".replaceAll(asker,userid); 32 rsst.close(); 33 s="update Clas set asker='"+ask+"',nownumber=nownumber-1 where id='"+id+"'"; 34 stmt.executeUpdate(s); 35 stmt.close(); 36 con.close(); 37 } catch (SQLException e) { 38 // TODO Auto-generated catch block 39 e.printStackTrace(); 40 } 41 request.getSession().setAttribute("message", "删除成功！"); 42 request.getRequestDispatcher("HaveSelected").forward(request, response); 43 } 44 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 45 // TODO Auto-generated method stub 46 doGet(request, response); 47 } 48 49 }