志愿者信息服务网

其他 2019-12-23 20:50:54 阅读次数: 0

新建一个javaweb工程，如图新建包与类

 源代码如下

CourseDao.java：

package src.dao;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import src.entity.Course;
import src.util.DBUtil;

public class CourseDao {

    public boolean add(Course course) {
        String sql = "insert into lianxi(name, sex, classroom,time,age,mianmao,fuwu) values('" + course.getName() + "','" + course.getSex() + "','" + course.getClassroom() +"','" + course.getTime() + "','" + course.getAge()  + "','" + course.getMianmao() + "','" + course.getFuwu() + "')";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        boolean f = false;
        int a = 0;
        try {
            state = conn.createStatement();
            a=state.executeUpdate(sql);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(state, conn);
        }        
        if (a > 0) {
            f = true;
        }
        return f;
    }

    public boolean delete (int id) {
        boolean f = false;
        String sql = "delete from lianxi where id='" + id + "'";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        int a = 0;
        
        try {
            state = conn.createStatement();
            a = state.executeUpdate(sql);
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(state, conn);
        }    
        if (a > 0) {
            f = true;
        }
        return f;
    }

    public boolean update(Course course) {
        String sql = "update lianxi set name='" + course.getName() + "', sex='" + course.getSex() + "', classroom='" + course.getClassroom()+ "', time='" + course.getTime()+ "', age='" + course.getAge()+ "', mianmao='" + course.getMianmao()+ "', fuwu='" + course.getFuwu()
            + "' where id='" + course.getId() + "'";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        boolean f = false;
        int a = 0;
        try {
            state = conn.createStatement();
            a = state.executeUpdate(sql);
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(state, conn);
        }    
        if (a > 0) {
            f = true;
        }
        return f;
    }
    
    public boolean name(String name) {
        boolean flag = false;
        String sql = "select name from lianxi where name = '" + name + "'";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;    
        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            while (rs.next()) {
                flag = true;
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }
        return flag;
    }
    
    public Course getCourseById(int id) {
        String sql = "select * from lianxi where id ='" + id + "'";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;
        Course course = null;    
        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            while (rs.next()) {
                String name = rs.getString("name");
                String sex = rs.getString("sex");
                String classroom = rs.getString("classroom");
                String time = rs.getString("time");
                String age = rs.getString("age");
                String mianmao = rs.getString("mianmao");
                String fuwu = rs.getString("fuwu");            
                course = new Course(id, name, sex, classroom, time, age, mianmao, fuwu);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }        
        return course;
    }

    public Course getCourseByName(String name) {
        String sql = "select * from lianxi where name ='" + name + "'";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;
        Course course = null;
        
        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            while (rs.next()) {
                int id = rs.getInt("id");
                String sex = rs.getString("sex");
                String classroom = rs.getString("classroom");
                String time = rs.getString("time");
                String age = rs.getString("age");
                String mianmao = rs.getString("mianmao");
                String fuwu = rs.getString("fuwu");
            course = new Course(id, name, sex, classroom, time, age, mianmao, fuwu);
            
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }        
        return course;
    }

    public List<Course> search(String name, String sex, String classroom,String time,String age,String mianmao,String fuwu) {
        String sql = "select * from lianxi where ";
        if (name != "") {
            sql += "name like '%" + name + "%'";
        }
        if (sex != "") {
            sql += "sex like '%" + sex + "%'";
        }
        if (classroom != "") {
            sql += "classroom like '%" + classroom + "%'";
        }
        if (time!= "") {
            sql += "time like '%" + time + "%'";
        }
        if (age!= "") {
            sql += "age like '%" + age + "%'";
        }
        if (mianmao!= "") {
            sql += "mianmao like '%" + mianmao + "%'";
        }
        if (fuwu!= "") {
            sql += "fuwu like '%" + fuwu + "%'";
        }
        List<Course> list = new ArrayList<>();
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;
        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            Course bean = null;
            while (rs.next()) {
                int id = rs.getInt("id");
                String name2 = rs.getString("name");
                String sex2 = rs.getString("sex");
                String classroom2 = rs.getString("classroom");
                String time2 = rs.getString("time");
                String age2 = rs.getString("age");
                String mianmao2 = rs.getString("mianmao");
                String fuwu2 = rs.getString("fuwu");
                bean = new Course(id, name2, sex2,classroom2, time2, age2, mianmao2, fuwu2);
                list.add(bean);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }    
        return list;
    }

    public List<Course> list() {
        String sql = "select * from lianxi";
        List<Course> list = new ArrayList<>();
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;
        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            Course bean = null;
            while (rs.next()) {
                int id = rs.getInt("id");
                String name2 = rs.getString("name");
                String sex2 = rs.getString("sex");
                String classroom2 = rs.getString("classroom");
                String time2 = rs.getString("time");
                String age2 = rs.getString("age");
                String mianmao2 = rs.getString("mianmao");
                String fuwu2 = rs.getString("fuwu");
                bean = new Course(id, name2, sex2, classroom2, time2, age2, mianmao2, fuwu2);
                list.add(bean);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }    
        return list;
    }
}

Course.java：

package src.entity;

public class Course {

    private int id;
    private String name;
    private String sex;
    private String classroom;
    private String time;
    private String age;
    private String mianmao;
    private String fuwu;

    public Course() {}
    
    public Course(int id, String name, String sex, String classroom,String time,String age,String mianmao,String fuwu) {
        this.setId(id);
        this.setName(name);
        this.setSex(sex);
        this.setClassroom(classroom);
        this.setTime(time);
        this.setAge(age);
        this.setMianmao(mianmao);
        this.setFuwu(fuwu);
    }
    
    public Course(String name, String sex, String classroom,String time,String age,String mianmao,String fuwu) {
        this.setName(name);
        this.setSex(sex);
        this.setClassroom(classroom);
        this.setTime(time);
        this.setAge(age);
        this.setMianmao(mianmao);
        this.setFuwu(fuwu);
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getClassroom() {
        return classroom;
    }

    public void setClassroom(String classroom) {
        this.classroom = classroom;
    }
    public String getTime() {
        return time;
    }

    public void setTime(String time) {
        this.time = time;
    }
    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }
    public String getMianmao() {
        return mianmao;
    }

    public void setMianmao(String mianmao) {
        this.mianmao = mianmao;
    }
    public String getFuwu() {
        return fuwu;
    }

    public void setFuwu(String fuwu) {
        this.fuwu = fuwu;
    }
}

CourseServlet.java：

package src.servlet;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import src.entity.Course;
import src.dao.CourseDao;
@WebServlet("/CourseServlet")
public class CourseServlet extends HttpServlet {
    
    private static final long serialVersionUID = 1L;
     public CourseServlet() {
            super();
            // TODO Auto-generated constructor stub
        }
    CourseDao dao = new CourseDao();

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        String method = req.getParameter("method");
        if ("add".equals(method)) {
            add(req, resp);
        } else if ("del".equals(method)) {
            del(req, resp);
        } else if ("update".equals(method)) {
            update(req, resp);
        } else if ("search".equals(method)) {
            search(req, resp);
        } else if ("getCourseById".equals(method)) {
            getCourseById(req, resp);
        } else if ("getcoursebyName".equals(method)) {
            getCourseByName(req, resp);
        } else if ("list".equals(method)) {
            list(req, resp);
        }
        else if ("searchlist".equals(method)) {
            searchlist(req, resp);
        }
    }

    private void add(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
        req.setCharacterEncoding("utf-8");
        String name = req.getParameter("name");
        String sex = req.getParameter("sex");
        String classroom = req.getParameter("classroom");
        Date currentTime=new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String time = formatter.format(currentTime);
        String age = req.getParameter("age");
        String mianmao = req.getParameter("mianmao");
        String fuwu = req.getParameter("fuwu");
        Course course = new Course(name, sex, classroom, time,age,mianmao,fuwu);
        Course course1 = dao.getCourseByName(name);
        if(course1==null) {
            dao.add(course);
            req.setAttribute("message", "注册成功");
            req.getRequestDispatcher("add.jsp").forward(req,resp);
        } else {
            req.setAttribute("message", "用户名已注册");
            req.getRequestDispatcher("add.jsp").forward(req,resp);
        }
    }

    private void list(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        List<Course> courses = dao.list();
        req.setAttribute("courses", courses);
        req.getRequestDispatcher("list.jsp").forward(req,resp);
    }
    private void searchlist(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        List<Course> courses = dao.list();
        req.setAttribute("courses", courses);
        req.getRequestDispatcher("searchlist.jsp").forward(req,resp);
    }

    private void getCourseById(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        int id = Integer.parseInt(req.getParameter("id"));
        Course course = dao.getCourseById(id);
        req.setAttribute("course", course);
        req.getRequestDispatcher("detail2.jsp").forward(req,resp);
    }

    private void getCourseByName(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        String name = req.getParameter("name");
        Course course = dao.getCourseByName(name);
        if(course == null) {
            req.setAttribute("message", "未查询到该用户");
            req.getRequestDispatcher("del.jsp").forward(req,resp);
        } else {
            req.setAttribute("course", course);
            req.getRequestDispatcher("detail.jsp").forward(req,resp);
        }
    }

    private void del(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        int id = Integer.parseInt(req.getParameter("id"));
        dao.delete(id);
        req.setAttribute("message", "删除成功");
        req.getRequestDispatcher("del.jsp").forward(req,resp);
    }

    private void update(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        int id = Integer.parseInt(req.getParameter("id"));
        String name = req.getParameter("name");
        String sex = req.getParameter("sex");
        String classroom = req.getParameter("classroom");
        String time = req.getParameter("time");
        String age = req.getParameter("age");
        String mianmao = req.getParameter("mianmao");
        String fuwu = req.getParameter("fuwu");
        Course course = new Course(id,name, sex, classroom, time,age,mianmao,fuwu);
        
        dao.update(course);
        req.setAttribute("message", "修改成功");
        req.getRequestDispatcher("CourseServlet?method=list").forward(req,resp);
    }

    private void search(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        String name = req.getParameter("name");
        String sex = req.getParameter("sex");
        String classroom = req.getParameter("classroom");
        String time = req.getParameter("time");
        String age = req.getParameter("age");
        String mianmao = req.getParameter("mianmao");
        String fuwu = req.getParameter("fuwu");
        List<Course> courses = dao.search(name, sex, classroom, time,age,mianmao,fuwu);
        Course course1 = dao.getCourseByName(name);
        req.setAttribute("courses", courses);
        req.getRequestDispatcher("searchlist.jsp").forward(req,resp);
    }
}

DBUtil.java：

package src.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DBUtil {
    
    public static String db_url = "jdbc:mysql://localhost:3306/test?useSSL=false&characterEncoding=UTF-8&serverTimezone=GMT";
    public static String db_user = "root";
    public static String db_pass = "root";
    
    public static Connection getConn () {
        Connection conn = null;
        
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");//��������
            conn = DriverManager.getConnection(db_url, db_user, db_pass);
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return conn;
    }

    public static void close (Statement state, Connection conn) {
        if (state != null) {
            try {
                state.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
    
    public static void close (ResultSet rs, Statement state, Connection conn) {
        if (rs != null) {
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        
        if (state != null) {
            try {
                state.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

}

如下图新建jsp文件

源代码如下

add.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>志愿者登记</title>
<style>
.a {
    border: 2px solid #a1a1a1;
    padding: 10px 40px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
#bk {
    border: 3px solid #a1a1a1;
    padding: 10px 60px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
 .button {
    background-color:  #ff8433;
    border: none;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 2px 2px;
    cursor: pointer;
}
table{
margin: auto;
}
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){
     
    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">志愿者信息登记</h1>
        <form action="CourseServlet?method=add" method="post" onsubmit="return check()">
        <table>
            <tr>
                <td>姓名</td>
                <td><input id="bk" type="text" name="name" ></td>
            </tr>
            <tr>
                <td>性别</td>
                    <td><input type="radio" name="sex" value="男">男
                    <input type="radio" name="sex" value="女">女</td>
            </tr>
            <tr>
                <td>民族</td>
                <td><input id="bk" type="text" name="classroom"></td>
            </tr>
            <tr>
                <td>年龄</td>
                <td><input id="bk" type="text" name="age"></td>
            </tr>
            <tr>
                <td>政治面貌</td>
                <td><select  style="width:200px;hight:20px;" name="mianmao">
                <option value="群众">群众</option>
                <option value="共青团员">共青团员</option>
                <option value="共青党员">共青党员</option>
            </select></td>
                </tr>
            <tr>
                <td>服务类别</td>            
                <td><input type="checkbox" name="fuwu" value="扶贫济困">扶贫济困<br>
                <input type="checkbox" name="fuwu" value="敬老助残">敬老助残 <br>
                <input type="checkbox" name="fuwu" value="社区服务">社区服务<br>
                <input type="checkbox" name="fuwu" value="秩序维护">秩序维护<br>
                <input type="checkbox" name="fuwu" value="文体服务">文体服务<br>
                <input type="checkbox" name="fuwu" value="环境保护">环境保护<br>
                <input type="checkbox" name="fuwu" value="治安防范">治安防范<br>
                <input type="checkbox" name="fuwu" value="医疗救治">医疗救治<br>
                <input type="checkbox" name="fuwu" value="法律援助">法律援助<br>
                <input type="checkbox" name="fuwu" value="大型活动">大型活动<br>
                <input type="checkbox" name="fuwu" value="心理疏导">心理疏导<br>
                <input type="checkbox" name="fuwu" value="精神抚慰">精神抚慰<br>
                <input type="checkbox" name="fuwu" value="支教支医">支教支医<br>
                <input type="checkbox" name="fuwu" value="科学普及">科学普及 <br>
                <input type="checkbox" name="fuwu" value="应急救援">应急救援<br>
                <input type="checkbox" name="fuwu" value="便民服务">便民服务<br>
                <input type="checkbox" name="fuwu" value="民事调解">民事调解<br>
                <input type="checkbox" name="fuwu" value="文明引导">文明引导<br>
                <input type="checkbox" name="fuwu" value="安全生产">安全生产<br>
                <input type="checkbox" name="fuwu" value="禁毒宣传">禁毒宣传<br>
                </tr>
            <tr>
            <td></td>
            <a href="index.jsp">返回主页面</a>
                <td><input class ="button" type="submit" value="注册">
                <input class ="button" type="reset" value="重置"></td>
    <script type="text/javascript">
        function check() {
            var name = document.getElementById("name");
            var sex = document.getElementById("sex");
            var classroom = document.getElementById("classroom");
            var time = document.getElementById("time");
            var age = document.getElementById("age");
            var mianmao = document.getElementById("mianmao");
            var fuwu = document.getElementById("fuwu");
            
            //非空
            if(name.value == '') {
                alert('志愿者姓名为空');
                name.focus();
                return false;
            }
            if(sex.value == '') {
                alert('性别为空');
                sex.focus();
                return false;
            }
            if(classroom.value == '') {
                alert('民族为空');
                classroom.focus();
                return false;
            }
            if(time.value == '') {
                alert('注册时间为空');
                time.focus();
                return false;
            }
            if(age.value == '') {
                alert('年龄为空');
                age.focus();
                return false;
            }
            if(mianmao.value == '') {
                alert('政治面貌为空');
                mianmao.focus();
                return false;
            }
            if(fuwu.value == '') {
                alert('服务类型为空');
                fuwu.focus();
                return false;
            }
        }
    </script>
</body>
</html>

del.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>志愿者信息删除</title>
<style>
    .a{
        border: 2px solid #a1a1a1;
        padding: 10px 40px;
        width: px;
        border-radius: 25px;
    }
    #bk {
    border: 3px solid #a1a1a1;
    padding: 10px 60px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
     .button {
    background-color:  #ff8433;
    border: none;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 2px 2px;
    cursor: pointer;
}
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){
     
    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">志愿者信息删除</h1>
        <a href="index.jsp">返回主页</a>
        <form action="CourseServlet?method=getcoursebyName" method="post" onsubmit="return check()">
        <tr>
                <td>姓名</td>
                <td><input id="bk" type="text" name="name" ></td><br>
            </tr>    
            <td><input class ="button" type="submit" value="查询"></td>
        </form>
    </div>
    <script type="text/javascript">
        function check() {
            var name = document.getElementById("name");;
            
            //非空
            if(name.value == '') {
                alert('志愿者姓名为空');
                name.focus();
                return false;
            }
        }
    </script>
</body>
</html>

detail.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>志愿者信息删除</title>
<style>
.a {
    border: 2px solid #a1a1a1;
    padding: 10px 40px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
#bk {
    border: 3px solid #a1a1a1;
    padding: 10px 60px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
     .button {
    background-color:  #ff8433;
    border: none;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 2px 2px;
    cursor: pointer;
}
</style>
</head>
<body>
    <div align="center">
        <h1 style="color: red;">志愿者信息删除</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>志愿者姓名</td>
                <td>${course.name}</td>
            </tr>
            <tr>
                <td>性别</td>
                <td>${course.sex}</td>
            </tr>
            <tr>
                <td>民族</td>
                <td>${course.classroom}</td>
            </tr>
            <tr>
                <td>注册时间</td>
                <td>${course.time}</td>
            </tr>
            <tr>
                <td>年龄</td>
                <td>${course.age}</td>
            </tr>
            <tr>
                <td>政治面貌</td>
                <td>${course.mianmao}</td>
            </tr>
            <tr>
                <td>服务类型</td>
                <td>${course.fuwu}</td>
            </tr>
        </table>
        <div >
            <a onclick="return check()" href="CourseServlet?method=del&id=${course.id}"><input class ="button" type="submit" value="删除"></a>
        </div>
    </div>
    <script type="text/javascript">
        function check() {
            if (confirm("真的要删除吗？")){
                return true;
            }else{
                return false;
            }
        }
    </script>
</body>
</html>

detail2.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>志愿者信息修改</title>
<style>
.a {
    border: 2px solid #a1a1a1;
    padding: 10px 40px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
#bk {
    border: 3px solid #a1a1a1;
    padding: 10px 60px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
 .button {
    background-color:  #ff8433;
    border: none;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 2px 2px;
    cursor: pointer;
}
table{
margin: auto;
}
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){
     
    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">志愿者信息修改</h1>
        <a href="index.jsp">返回主页</a>
        <form action="CourseServlet?method=update" method="post" onsubmit="return check()">
            <table>
            <tr>
                <td>姓名</td>
                <td><input id="bk" type="text" name="name" value="${course.name}"></td>
            </tr>
            <tr>
                <td>性别</td>
                    <td><input type="radio" name="sex" value="男">男
                    <input type="radio" name="sex" value="女">女</td>
            </tr>
            <tr>
                <td>民族</td>
                <td><input id="bk" type="text" name="classroom" value="${course.classroom}"></td>
            </tr>
            <tr>
                <td>注册时间</td>
                <td><input id="bk" type="text" name="time" value="${course.time}"/></td>
            <tr>
                <td>年龄</td>
                <td><input id="bk" type="text" name="age" value="${course.age}"></td>
            </tr>
            
            <tr>
                <td>政治面貌</td>
                <td><select  style="width:200px;hight:20px;" name="mianmao">
                <option value="${course.mianmao}">${course.mianmao}</option>
                <option value="群众">群众</option>
                <option value="共青团员">共青团员</option>
                <option value="共青党员">共青党员</option>
            </select></td>
                </tr>
            <tr>
                <td>服务类别</td>            
                <td><input type="checkbox" name="fuwu" value="扶贫济困">扶贫济困<br>
                <input type="checkbox" name="fuwu" value="敬老助残">敬老助残 <br>
                <input type="checkbox" name="fuwu" value="社区服务">社区服务<br>
                <input type="checkbox" name="fuwu" value="秩序维护">秩序维护<br>
                <input type="checkbox" name="fuwu" value="文体服务">文体服务<br>
                <input type="checkbox" name="fuwu" value="环境保护">环境保护<br>
                <input type="checkbox" name="fuwu" value="治安防范">治安防范<br>
                <input type="checkbox" name="fuwu" value="医疗救治">医疗救治<br>
                <input type="checkbox" name="fuwu" value="法律援助">法律援助<br>
                <input type="checkbox" name="fuwu" value="大型活动">大型活动<br>
                <input type="checkbox" name="fuwu" value="心理疏导">心理疏导<br>
                <input type="checkbox" name="fuwu" value="精神抚慰">精神抚慰<br>
                <input type="checkbox" name="fuwu" value="支教支医">支教支医<br>
                <input type="checkbox" name="fuwu" value="科学普及">科学普及 <br>
                <input type="checkbox" name="fuwu" value="应急救援">应急救援<br>
                <input type="checkbox" name="fuwu" value="便民服务">便民服务<br>
                <input type="checkbox" name="fuwu" value="民事调解">民事调解<br>
                <input type="checkbox" name="fuwu" value="文明引导">文明引导<br>
                <input type="checkbox" name="fuwu" value="安全生产">安全生产<br>
                <input type="checkbox" name="fuwu" value="禁毒宣传">禁毒宣传<br>
                </tr>
            </table>
            <input type="hidden" id="id" name="id" value="${course.id}"/>
            <input class ="button" type="submit" value="修改">
        </form>
    </div>
    <script type="text/javascript">
        function check() {
            var name = document.getElementById("name");
            var sex = document.getElementById("sex");
            var classroom = document.getElementById("classroom");
            var time = document.getElementById("time");
            var age = document.getElementById("age");
            var mianmao = document.getElementById("mianmao");
            var fuwu = document.getElementById("fuwu");
            
            //非空
            if(name.value == '') {
                alert('志愿者姓名为空');
                name.focus();
                return false;
            }
            if(sex.value == '') {
                alert('性别为空');
                sex.focus();
                return false;
            }
            if(classroom.value == '') {
                alert('民族为空');
                classroom.focus();
                return false;
            }
            if(time.value == '') {
                alert('注册时间为空');
                time.focus();
                return false;
            }
            if(age.value == '') {
                alert('年龄为空');
                age.focus();
                return false;
            }
            if(mianmao.value == '') {
                alert('政治面貌为空');
                mianmao.focus();
                return false;
            }
            if(fuwu.value == '') {
                alert('服务类型为空');
                fuwu.focus();
                return false;
            }
            
            //性别
            if(sex.value != '男' && sex.value != '女' ){
                alert('性别错误');
                return false;
            }
            
            //政治面貌
            if(!/^群众/.test(mianmao.value) && !/^共青团员/.test(mianmao.value) && !/^中共党员/.test(mianmao.value)) {
                alert('政治面貌错误');
                return false;
            }
        }
    </script>
</body>
</html>

index.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>首页</title>
<style>
    .a{
        font-size: 26px;
        margin-top: 20px;
    }
</style>
</head>
<body>
    <div align="center">
        <h1 style="color: red;">青年志愿者服务网</h1>
        <div class="a">
            <a href="add.jsp">志愿者登记信息</a>
        </div>
        <div class="a">
            <a href="CourseServlet?method=list">修改志愿者信息</a>
        </div>
        <div class="a">
            <a href="del.jsp">删除志愿者信息</a>
        </div>
        <div class="a">
            <a href="search.jsp">查询志愿者信息</a>
        </div>
        <div class="a">
            <a href="CourseServlet?method=searchlist">志愿者信息浏览</a>
        </div>
    </div>
</body>
</html>

list.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>志愿者信息修改</title>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){
     
    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">志愿者信息列表</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>id</td>
                <td>姓名</td>
                <td>性别</td>
                <td>民族</td>
                <td>注册时间</td>
                <td>年龄</td>
                <td>政治面貌</td>
                <td>服务类型</td>
                <td align="center" colspan="2">操作</td>
            </tr>
            <c:forEach items="${courses}" var="item">
                <tr>
                    <td>${item.id}</td>
                    <td>${item.name}</td>
                    <td>${item.sex}</td>
                    <td>${item.classroom}</td>
                    <td>${item.time}</td>
                    <td>${item.age}</td>
                    <td>${item.mianmao}</td>
                    <td>${item.fuwu}</td>
                    <td><a href="CourseServlet?method=getCourseById&id=${item.id}">修改</a></td>
                </tr>
            </c:forEach>
        </table>
    </div>
</body>
</html>

search.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>
.a {
    border: 2px solid #a1a1a1;
    padding: 10px 40px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
#bk {
    border: 3px solid #a1a1a1;
    padding: 10px 60px;
    /*     background:#dddddd; */
    width: px;
    border-radius: 25px;
}
 .button {
    background-color:  #ff8433;
    border: none;
    color: white;
    padding: 5px 10px;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 2px 2px;
    cursor: pointer;
}
table{
margin: auto;
}
</style>
</head>
<body>
<%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){
     
    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">志愿者信息查询</h1>
        <a href="index.jsp">返回主页</a>
        <form action="CourseServlet?method=search" method="post" onsubmit="return check()">
            <table>
            <tr>
                <td>姓名</td>
                <td><input id="bk" type="text" name="name" ></td>
            </tr>
            <tr>
                <td>性别</td>
                    <td><input id="bk"type="text" name="sex"></td>
            </tr>
            <tr>
                <td>民族</td>
                <td><input id="bk" type="text" name="classroom"></td>
            </tr>
            <tr>
                <td>注册时间</td>
                <td><input id="bk" type="text" name="time"></td>
            </tr>
            <tr>
                <td>年龄</td>
                <td><input id="bk" type="text" name="age"></td>
            </tr>
            <tr>
                <td>政治面貌</td>
                <td><input id="bk" type="text" name="mianmao"></td>
                </tr>
            <tr>
                <td>服务类别</td>            
                <td><input id="bk"type="text" name="fuwu" ><br>
                </tr>
            <tr>
            <td></td>
                <td><input class ="button" type="submit" value="查询">
                    <input class="button" type="reset" value="重置"></td>
        </form>
    </div>
    <script type="text/javascript">
        function check() {
            var name = document.getElementById("name");
            var sex = document.getElementById("sex");
            var classroom = document.getElementById("classroom");
            var time = document.getElementById("time");
            var age = document.getElementById("age");
            var mianmao = document.getElementById("mianmao");
            var fuwu = document.getElementById("fuwu");
            
            //非空
            if(name.value == '' && sex.value == '' && classroom.value == '' && time.value == '' && age.value == '' && mianmao.value == '' && fuwu.value == '') {
                alert('请填写一个条件');
                return false;
            }else 
                return true;
        }
    </script>
</body>
</html>

searchlist.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>志愿者信息浏览</title>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
</style>
</head>
<body>
    <div align="center">
        <h1 style="color: red;">志愿者信息列表</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>id</td>
                <td>姓名</td>
                <td>性别</td>
                <td>民族</td>
                <td>注册时间</td>
                <td>年龄</td>
                <td>政治面貌</td>
                <td>服务类型</td>
            </tr>
            <!-- forEach遍历出adminBeans -->
            <c:forEach items="${courses}" var="item" varStatus="status">
                <tr>
                    <td>${item.id}</td>
                    <td><a>${item.name}</a></td>
                    <td>${item.sex}</td>
                    <td>${item.classroom}</td>
                    <td>${item.time}</td>
                    <td>${item.age}</td>
                    <td>${item.mianmao}</td>
                    <td>${item.fuwu}</td>
                </tr>
            </c:forEach>
        </table>
    </div>
</body>
</html>

MySQL数据库中表名为”lianxi“

表内详细信息如下：

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