IDEA+jsp+Mysql+Tomcat+bootstrap+druid实现黑马学生信息管理系统

需要完成jsp课程设计的同学可以参考一下我的源码

文章目录

IDEA+jsp+Mysql+Tomcat+bootstrap+druid实现黑马学生信息管理系统
前言
一、项目结构展示
- 1.后端项目结构展示
- 2.前端项目结构展示
二、项目逻辑结构展示
三、项目实现功能界面展示
四、项目后端源码展示
五、项目前端源码展示
- add.jsp
- index.jsp
- list.jsp
- login.jsp
- update.jsp
六、Mysql数据库表结构和druid文件配置
七、其他
- 往期文章
- 支持博主

前言

本项目基于JavavEE和Javaweb基础，本项目严格遵循MVC开发模式和三层架构，使用的开发软件是IDEA.2017,使用的数据库是Mysql，数据库连接池技术是巴里巴巴的druid技术，前端界面美化是基于bootstrap前端框架

一、项目结构展示

1.后端项目结构展示

后端项目结构展示

2.前端项目结构展示

前端项目结构展示

二、项目逻辑结构展示

1.MVC开发模式

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2.三层架构

在这里插入图片描述

3.登录功能

在这里插入图片描述

4.列表查询

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5.添加功能

在这里插入图片描述

6.修改功能

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7.删除功能

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8.简单和复杂条件分页查询

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9.过滤敏感词汇

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三、项目实现功能界面展示

验证码账号密码登录界面

登录界面
在这里插入图片描述
输入验证码错误

登录成功界面

在这里插入图片描述

查询学生信息列表界面

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条件查询学生信息列表界面

学生姓名查询
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学生籍贯查询

学生邮箱查询

修改生信息界面

在这里插入图片描述

添加学生信息界面

添加学生信息
在这里插入图片描述

添加成功
在这里插入图片描述

删除学生信息界面

在这里插入图片描述

四、项目后端源码展示

UserDaoImpl

package cn.itcast.dao.impl;

import cn.itcast.dao.UserDao;
import cn.itcast.domain.User;
import cn.itcast.util.JDBCUtils;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class UserDaoImpl implements UserDao {
    
    

    private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());

    @Override
    public List<User> findAll() {
    
    
        //使用JDBC操作数据库...
        //1.定义sql
        String sql = "select * from user";
        List<User> users = template.query(sql, new BeanPropertyRowMapper<User>(User.class));

        return users;
    }

    @Override
    public User findUserByUsernameAndPassword(String username, String password) {
    
    
        try {
    
    
            String sql = "select * from user where username = ? and password = ?";
            User user = template.queryForObject(sql, new BeanPropertyRowMapper<User>(User.class), username, password);
            return user;
        } catch (Exception e) {
    
    
            e.printStackTrace();
            return null;
        }

    }

    @Override
    public void add(User user) {
    
    
        //1.定义sql
        String sql = "insert into user values(null,?,?,?,?,?,?,null,null)";
        //2.执行sql
        template.update(sql, user.getName(), user.getGender(), user.getAge(), user.getAddress(), user.getQq(), user.getEmail());
    }

    @Override
    public void delete(int id) {
    
    
        //1.定义sql
        String sql = "delete from user where id = ?";
        //2.执行sql
        template.update(sql, id);
    }

    @Override
    public User findById(int id) {
    
    
        String sql = "select * from user where id = ?";
        return template.queryForObject(sql, new BeanPropertyRowMapper<User>(User.class), id);
    }

    @Override
    public void update(User user) {
    
    
        String sql = "update user set name = ?,gender = ? ,age = ? , address = ? , qq = ?, email = ? where id = ?";
        template.update(sql, user.getName(), user.getGender(), user.getAge(), user.getAddress(), user.getQq(), user.getEmail(), user.getId());
    }

    @Override
    public int findTotalCount(Map<String, String[]> condition) {
    
    
        //1.定义模板初始化sql
        String sql = "select count(*) from user where 1 = 1 ";
        StringBuilder sb = new StringBuilder(sql);
        //2.遍历map
        Set<String> keySet = condition.keySet();
        //定义参数的集合
        List<Object> params = new ArrayList<Object>();
        for (String key : keySet) {
    
    

            //排除分页条件参数
            if("currentPage".equals(key) || "rows".equals(key)){
    
    
                continue;
            }

            //获取value
            String value = condition.get(key)[0];
            //判断value是否有值
            if(value != null && !"".equals(value)){
    
    
                //有值
                sb.append(" and "+key+" like ? ");
                params.add("%"+value+"%");//？条件的值
            }
        }
        System.out.println(sb.toString());
        System.out.println(params);

        return template.queryForObject(sb.toString(),Integer.class,params.toArray());
    }

    @Override
    public List<User> findByPage(int start, int rows, Map<String, String[]> condition) {
    
    
        String sql = "select * from user  where 1 = 1 ";

        StringBuilder sb = new StringBuilder(sql);
        //2.遍历map
        Set<String> keySet = condition.keySet();
        //定义参数的集合
        List<Object> params = new ArrayList<Object>();
        for (String key : keySet) {
    
    

            //排除分页条件参数
            if("currentPage".equals(key) || "rows".equals(key)){
    
    
                continue;
            }

            //获取value
            String value = condition.get(key)[0];
            //判断value是否有值
            if(value != null && !"".equals(value)){
    
    
                //有值
                sb.append(" and "+key+" like ? ");
                params.add("%"+value+"%");//？条件的值
            }
        }

        //添加分页查询
        sb.append(" limit ?,? ");
        //添加分页查询参数值
        params.add(start);
        params.add(rows);
        sql = sb.toString();
        System.out.println(sql);
        System.out.println(params);

        return template.query(sql,new BeanPropertyRowMapper<User>(User.class),params.toArray());
    }
}

UserDao

package cn.itcast.dao;

import cn.itcast.domain.User;

import java.util.List;
import java.util.Map;

/**
 * 用户操作的DAO
 */
public interface UserDao {
    
    


    public List<User> findAll();

    User findUserByUsernameAndPassword(String username, String password);

    void add(User user);

    void delete(int id);

    User findById(int i);

    void update(User user);

    /**
     * 查询总记录数
     * @return
     * @param condition
     */
    int findTotalCount(Map<String, String[]> condition);

    /**
     * 分页查询每页记录
     * @param start
     * @param rows
     * @param condition
     * @return
     */
    List<User> findByPage(int start, int rows, Map<String, String[]> condition);
}

PageBean

package cn.itcast.domain;

import java.util.List;

/**
 * 分页对象
 */
public class PageBean<T> {
    
    
    private int totalCount; // 总记录数
    private int totalPage ; // 总页码
    private List<T> list ; // 每页的数据
    private int currentPage ; //当前页码
    private int rows;//每页显示的记录数

    public int getTotalCount() {
    
    
        return totalCount;
    }

    public void setTotalCount(int totalCount) {
    
    
        this.totalCount = totalCount;
    }

    public int getTotalPage() {
    
    
        return totalPage;
    }

    public void setTotalPage(int totalPage) {
    
    
        this.totalPage = totalPage;
    }

    public List<T> getList() {
    
    
        return list;
    }

    public void setList(List<T> list) {
    
    
        this.list = list;
    }

    public int getCurrentPage() {
    
    
        return currentPage;
    }

    public void setCurrentPage(int currentPage) {
    
    
        this.currentPage = currentPage;
    }

    public int getRows() {
    
    
        return rows;
    }

    public void setRows(int rows) {
    
    
        this.rows = rows;
    }

    @Override
    public String toString() {
    
    
        return "PageBean{" +
                "totalCount=" + totalCount +
                ", totalPage=" + totalPage +
                ", list=" + list +
                ", currentPage=" + currentPage +
                ", rows=" + rows +
                '}';
    }
}

User

package cn.itcast.domain;

public class User {
    
    
    private int id;
    private String name;
    private String gender;
    private int age;
    private String address;
    private String qq;
    private String email;

    private String username;
    private String password;

    public String getUsername() {
    
    
        return username;
    }

    public void setUsername(String username) {
    
    
        this.username = username;
    }

    public String getPassword() {
    
    
        return password;
    }

    public void setPassword(String password) {
    
    
        this.password = password;
    }

    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 getGender() {
    
    
        return gender;
    }

    public void setGender(String gender) {
    
    
        this.gender = gender;
    }

    public int getAge() {
    
    
        return age;
    }

    public void setAge(int age) {
    
    
        this.age = age;
    }

    public String getAddress() {
    
    
        return address;
    }

    public void setAddress(String address) {
    
    
        this.address = address;
    }

    public String getQq() {
    
    
        return qq;
    }

    public void setQq(String qq) {
    
    
        this.qq = qq;
    }

    public String getEmail() {
    
    
        return email;
    }

    public void setEmail(String email) {
    
    
        this.email = email;
    }

    @Override
    public String toString() {
    
    
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", gender='" + gender + '\'' +
                ", age=" + age +
                ", address='" + address + '\'' +
                ", qq='" + qq + '\'' +
                ", email='" + email + '\'' +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

UserServiceImpl

package cn.itcast.service.impl;

import cn.itcast.dao.UserDao;
import cn.itcast.dao.impl.UserDaoImpl;
import cn.itcast.domain.PageBean;
import cn.itcast.domain.User;
import cn.itcast.service.UserService;

import java.util.List;
import java.util.Map;

public class UserServiceImpl implements UserService {
    
    
    private UserDao dao = new UserDaoImpl();

    @Override
    public List<User> findAll() {
    
    
        //调用Dao完成查询
        return dao.findAll();
    }

    @Override
    public User login(User user) {
    
    
        return dao.findUserByUsernameAndPassword(user.getUsername(),user.getPassword());
    }

    @Override
    public void addUser(User user) {
    
    
        dao.add(user);
    }

    @Override
    public void deleteUser(String id) {
    
    
        dao.delete(Integer.parseInt(id));
    }

    @Override
    public User findUserById(String id) {
    
    
        return dao.findById(Integer.parseInt(id));
    }

    @Override
    public void updateUser(User user) {
    
    
        dao.update(user);
    }

    @Override
    public void delSelectedUser(String[] ids) {
    
    
        if(ids != null && ids.length > 0){
    
    
            //1.遍历数组
            for (String id : ids) {
    
    
                //2.调用dao删除
                dao.delete(Integer.parseInt(id));
            }
        }

    }

    @Override
    public PageBean<User> findUserByPage(String _currentPage, String _rows, Map<String, String[]> condition) {
    
    

        int currentPage = Integer.parseInt(_currentPage);
        int rows = Integer.parseInt(_rows);

        if(currentPage <=0) {
    
    
            currentPage = 1;
        }
        //1.创建空的PageBean对象
        PageBean<User> pb = new PageBean<User>();
        //2.设置参数
        pb.setCurrentPage(currentPage);
        pb.setRows(rows);

        //3.调用dao查询总记录数
        int totalCount = dao.findTotalCount(condition);
        pb.setTotalCount(totalCount);
        //4.调用dao查询List集合
        //计算开始的记录索引
        int start = (currentPage - 1) * rows;
        List<User> list = dao.findByPage(start,rows,condition);
        pb.setList(list);

        //5.计算总页码
        int totalPage = (totalCount % rows)  == 0 ? totalCount/rows : (totalCount/rows) + 1;
        pb.setTotalPage(totalPage);


        return pb;
    }
}

UserService

package cn.itcast.service;

import cn.itcast.domain.PageBean;
import cn.itcast.domain.User;

import java.util.List;
import java.util.Map;

/**
 * 用户管理的业务接口
 */
public interface UserService {
    
    

    /**
     * 查询所有用户信息
     * @return
     */
    public List<User> findAll();

    /**
     * 登录方法
     * @param user
     * @return
     */
    User login(User user);

    /**
     * 保存User
     * @param user
     */
    void addUser(User user);

    /**
     * 根据id删除User
     * @param id
     */
    void deleteUser(String id);

    /**
     * 根据id查询
     * @param id
     * @return
     */
    User findUserById(String id);

    /**
     * 修改用户信息
     * @param user
     */
    void updateUser(User user);

    /**
     * 批量删除用户
     * @param ids
     */
    void delSelectedUser(String[] ids);

    /**
     * 分页条件查询
     * @param currentPage
     * @param rows
     * @param condition
     * @return
     */
    PageBean<User> findUserByPage(String currentPage, String rows, Map<String, String[]> condition);
}

JDBCUtils

package cn.itcast.util;

import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

/**
 * JDBC工具类 使用Durid连接池
 */
public class JDBCUtils {
    
    

    private static DataSource ds ;

    static {
    
    

        try {
    
    
            //1.加载配置文件
            Properties pro = new Properties();
            //使用ClassLoader加载配置文件，获取字节输入流
            InputStream is = JDBCUtils.class.getClassLoader().getResourceAsStream("druid.properties");
            pro.load(is);

            //2.初始化连接池对象
            ds = DruidDataSourceFactory.createDataSource(pro);

        } catch (IOException e) {
    
    
            e.printStackTrace();
        } catch (Exception e) {
    
    
            e.printStackTrace();
        }
    }

    /**
     * 获取连接池对象
     */
    public static DataSource getDataSource(){
    
    
        return ds;
    }


    /**
     * 获取连接Connection对象
     */
    public static Connection getConnection() throws SQLException {
    
    
        return  ds.getConnection();
    }
}

LoginFilter

package cn.itcast.web.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

/**
 * 登录验证的过滤器
 */
@WebFilter("/*")
public class LoginFilter implements Filter {
    
    


    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
    
    
        System.out.println(req);
        //0.强制转换
        HttpServletRequest request = (HttpServletRequest) req;

        //1.获取资源请求路径
        String uri = request.getRequestURI();
        //2.判断是否包含登录相关资源路径,要注意排除掉 css/js/图片/验证码等资源
        if(uri.contains("/login.jsp") || uri.contains("/loginServlet") || uri.contains("/css/") || uri.contains("/js/") || uri.contains("/fonts/") || uri.contains("/checkCodeServlet")  ){
    
    
            //包含，用户就是想登录。放行
            chain.doFilter(req, resp);
        }else{
    
    
            //不包含，需要验证用户是否登录
            //3.从获取session中获取user
            Object user = request.getSession().getAttribute("user");
            if(user != null){
    
    
                //登录了。放行
                chain.doFilter(req, resp);
            }else{
    
    
                //没有登录。跳转登录页面

                request.setAttribute("login_msg","您尚未登录，请登录");
                request.getRequestDispatcher("/login.jsp").forward(request,resp);
            }
        }


        // chain.doFilter(req, resp);
    }

    public void init(FilterConfig config) throws ServletException {
    
    

    }

    public void destroy() {
    
    
    }

}

SensitiveWordsFilter

package cn.itcast.web.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.List;

/**
 * 敏感词汇过滤器
 */
@WebFilter("/*")
public class SensitiveWordsFilter implements Filter {
    
    


    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
    
    
        //1.创建代理对象，增强getParameter方法

        ServletRequest proxy_req = (ServletRequest) Proxy.newProxyInstance(req.getClass().getClassLoader(), req.getClass().getInterfaces(), new InvocationHandler() {
    
    
            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    
    
                //增强getParameter方法
                //判断是否是getParameter方法
                if(method.getName().equals("getParameter")){
    
    
                    //增强返回值
                    //获取返回值
                    String value = (String) method.invoke(req,args);
                    if(value != null){
    
    
                        for (String str : list) {
    
    
                            if(value.contains(str)){
    
    
                                value = value.replaceAll(str,"***");
                            }
                        }
                    }
                    
                    return  value;
                }

                //判断方法名是否是 getParameterMap

                //判断方法名是否是 getParameterValue

                return method.invoke(req,args);
            }
        });

        //2.放行
        chain.doFilter(proxy_req, resp);
    }
    private List<String> list = new ArrayList<String>();//敏感词汇集合
    public void init(FilterConfig config) throws ServletException {
    
    

        try{
    
    
            //1.获取文件真实路径
            ServletContext servletContext = config.getServletContext();
            String realPath = servletContext.getRealPath("/WEB-INF/classes/敏感词汇.txt");
            //2.读取文件
            BufferedReader br = new BufferedReader(new FileReader(realPath));
            //3.将文件的每一行数据添加到list中
            String line = null;
            while((line = br.readLine())!=null){
    
    
                list.add(line);
            }

            br.close();

            System.out.println(list);

        }catch (Exception e){
    
    
            e.printStackTrace();
        }

    }

    public void destroy() {
    
    
    }

}

AddUserServlet

package cn.itcast.web.servlet;

import cn.itcast.domain.User;
import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;
import org.apache.commons.beanutils.BeanUtils;

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 java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;

@WebServlet("/addUserServlet")
public class AddUserServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        //1.设置编码
        request.setCharacterEncoding("utf-8");
        //2.获取参数
        Map<String, String[]> map = request.getParameterMap();
        //3.封装对象
        User user = new User();
        try {
    
    
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
    
    
            e.printStackTrace();
        } catch (InvocationTargetException e) {
    
    
            e.printStackTrace();
        }

        //4.调用Service保存
        UserService service = new UserServiceImpl();
        service.addUser(user);

        //5.跳转到userListServlet
        response.sendRedirect(request.getContextPath()+"/userListServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

CheckCodeServlet

package cn.itcast.web.servlet;

import javax.imageio.ImageIO;
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 java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Random;

/**
 * 验证码
 */
@WebServlet("/checkCodeServlet")
public class CheckCodeServlet extends HttpServlet {
    
    
	public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
    
    
		
		//服务器通知浏览器不要缓存
		response.setHeader("pragma","no-cache");
		response.setHeader("cache-control","no-cache");
		response.setHeader("expires","0");
		
		//在内存中创建一个长80，宽30的图片，默认黑色背景
		//参数一：长
		//参数二：宽
		//参数三：颜色
		int width = 80;
		int height = 30;
		BufferedImage image = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
		
		//获取画笔
		Graphics g = image.getGraphics();
		//设置画笔颜色为灰色
		g.setColor(Color.GRAY);
		//填充图片
		g.fillRect(0,0, width,height);
		
		//产生4个随机验证码，12Ey
		String checkCode = getCheckCode();
		//将验证码放入HttpSession中
		request.getSession().setAttribute("CHECKCODE_SERVER",checkCode);
		
		//设置画笔颜色为黄色
		g.setColor(Color.YELLOW);
		//设置字体的小大
		g.setFont(new Font("黑体",Font.BOLD,24));
		//向图片上写入验证码
		g.drawString(checkCode,15,25);
		
		//将内存中的图片输出到浏览器
		//参数一：图片对象
		//参数二：图片的格式，如PNG,JPG,GIF
		//参数三：图片输出到哪里去
		ImageIO.write(image,"PNG",response.getOutputStream());
	}
	/**
	 * 产生4位随机字符串 
	 */
	private String getCheckCode() {
    
    
		String base = "0123456789ABCDEFGabcdefg";
		int size = base.length();
		Random r = new Random();
		StringBuffer sb = new StringBuffer();
		for(int i=1;i<=4;i++){
    
    
			//产生0到size-1的随机值
			int index = r.nextInt(size);
			//在base字符串中获取下标为index的字符
			char c = base.charAt(index);
			//将c放入到StringBuffer中去
			sb.append(c);
		}
		return sb.toString();
	}
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
		this.doGet(request,response);
	}
}

DelSelectedServlet

package cn.itcast.web.servlet;

import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;

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 java.io.IOException;

@WebServlet("/delSelectedServlet")
public class DelSelectedServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        //1.获取所有id
        String[] ids = request.getParameterValues("uid");
        //2.调用service删除
        UserService service = new UserServiceImpl();
        service.delSelectedUser(ids);

        //3.跳转查询所有Servlet
        response.sendRedirect(request.getContextPath()+"/userListServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

DelUserServlet

package cn.itcast.web.servlet;

import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;

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 java.io.IOException;

@WebServlet("/delUserServlet")
public class DelUserServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        //1.获取id
        String id = request.getParameter("id");
        //2.调用service删除
        UserService service = new UserServiceImpl();
        service.deleteUser(id);

        //3.跳转到查询所有Servlet
        response.sendRedirect(request.getContextPath()+"/userListServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

FindUserByPageServlet

package cn.itcast.web.servlet;

import cn.itcast.domain.PageBean;
import cn.itcast.domain.User;
import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;

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 java.io.IOException;
import java.util.Map;

@WebServlet("/findUserByPageServlet")
public class FindUserByPageServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        request.setCharacterEncoding("utf-8");

        //1.获取参数
        String currentPage = request.getParameter("currentPage");//当前页码
        String rows = request.getParameter("rows");//每页显示条数

        if(currentPage == null || "".equals(currentPage)){
    
    

            currentPage = "1";
        }


        if(rows == null || "".equals(rows)){
    
    
            rows = "5";
        }
        
        //获取条件查询参数
        Map<String, String[]> condition = request.getParameterMap();


        //2.调用service查询
        UserService service = new UserServiceImpl();
        PageBean<User> pb = service.findUserByPage(currentPage,rows,condition);

        System.out.println(pb);

        //3.将PageBean存入request
        request.setAttribute("pb",pb);
        request.setAttribute("condition",condition);//将查询条件存入request
        //4.转发到list.jsp
        request.getRequestDispatcher("/list.jsp").forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

FindUserServlet

package cn.itcast.web.servlet;

import cn.itcast.domain.User;
import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;

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 java.io.IOException;

@WebServlet("/findUserServlet")
public class FindUserServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        //1.获取id
        String id = request.getParameter("id");
        //2.调用Service查询
        UserService service = new UserServiceImpl();
        User user = service.findUserById(id);

        //3.将user存入request
        request.setAttribute("user",user);
        //4.转发到update.jsp
        request.getRequestDispatcher("/update.jsp").forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

LoginServlet

import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;
import org.apache.commons.beanutils.BeanUtils;

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 javax.servlet.http.HttpSession;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;

@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        System.out.println(request);

        //1.设置编码
        request.setCharacterEncoding("utf-8");

        //2.获取数据
        //2.1获取用户填写验证码
        String verifycode = request.getParameter("verifycode");

        //3.验证码校验
        HttpSession session = request.getSession();
        String checkcode_server = (String) session.getAttribute("CHECKCODE_SERVER");
        session.removeAttribute("CHECKCODE_SERVER");//确保验证码一次性
        if(!checkcode_server.equalsIgnoreCase(verifycode)){
    
    
            //验证码不正确
            //提示信息
            request.setAttribute("login_msg","验证码错误！");
            //跳转登录页面
            request.getRequestDispatcher("/login.jsp").forward(request,response);

            return;
        }

        Map<String, String[]> map = request.getParameterMap();
        //4.封装User对象
        User user = new User();
        try {
    
    
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
    
    
            e.printStackTrace();
        } catch (InvocationTargetException e) {
    
    
            e.printStackTrace();
        }


        //5.调用Service查询
        UserService service = new UserServiceImpl();
        User loginUser = service.login(user);
        //6.判断是否登录成功
        if(loginUser != null){
    
    
            //登录成功
            //将用户存入session
            session.setAttribute("user",loginUser);
            //跳转页面
            response.sendRedirect(request.getContextPath()+"/index.jsp");
        }else{
    
    
            //登录失败
            //提示信息
            request.setAttribute("login_msg","用户名或密码错误！");
            //跳转登录页面
            request.getRequestDispatcher("/login.jsp").forward(request,response);

        }

UpdateUserServlet

import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;
import org.apache.commons.beanutils.BeanUtils;

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 java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;

@WebServlet("/updateUserServlet")
public class UpdateUserServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        //1.设置编码
        request.setCharacterEncoding("utf-8");
        //2.获取map
        Map<String, String[]> map = request.getParameterMap();
        //3.封装对象
        User user = new User();
        try {
    
    
            BeanUtils.populate(user,map);
        } catch (IllegalAccessException e) {
    
    
            e.printStackTrace();
        } catch (InvocationTargetException e) {
    
    
            e.printStackTrace();
        }

        //4.调用Service修改
        UserService service = new UserServiceImpl();
        service.updateUser(user);

        //5.跳转到查询所有Servlet
        response.sendRedirect(request.getContextPath()+"/userListServlet");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

UserListServlet

package cn.itcast.web.servlet;

import cn.itcast.domain.User;
import cn.itcast.service.UserService;
import cn.itcast.service.impl.UserServiceImpl;

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 java.io.IOException;
import java.util.List;

@WebServlet("/userListServlet")
public class UserListServlet extends HttpServlet {
    
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        //1.调用UserService完成查询
        UserService service = new UserServiceImpl();
        List<User> users = service.findAll();
        //2.将list存入request域
        request.setAttribute("users",users);
        //3.转发到list.jsp
        request.getRequestDispatcher("/list.jsp").forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    
        this.doPost(request, response);
    }
}

五、项目前端源码展示

add.jsp

%@ page contentType="text/html;charset=UTF-8" language="java" %>

<!-- HTML5文档-->
<!DOCTYPE html>
<!-- 网页使用的语言 -->
<html lang="zh-CN">
<head>
    <!-- 指定字符集 -->
    <meta charset="utf-8">
    <!-- 使用Edge最新的浏览器的渲染方式 -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- viewport视口：网页可以根据设置的宽度自动进行适配，在浏览器的内部虚拟一个容器，容器的宽度与设备的宽度相同。
    width: 默认宽度与设备的宽度相同
    initial-scale: 初始的缩放比，为1:1 -->
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>添加用户</title>

    <!-- 1. 导入CSS的全局样式 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- 2. jQuery导入，建议使用1.9以上的版本 -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 3. 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
    <center><h3>添加联系人页面</h3></center>
    <form action="${pageContext.request.contextPath}/addUserServlet" method="post">
        <div class="form-group">
            <label for="name">姓名：</label>
            <input type="text" class="form-control" id="name" name="name" placeholder="请输入姓名">
        </div>

        <div class="form-group">
            <label>性别：</label>
            <input type="radio" name="gender" value="男" checked="checked"/>男
            <input type="radio" name="gender" value="女"/>女
        </div>

        <div class="form-group">
            <label for="age">年龄：</label>
            <input type="text" class="form-control" id="age" name="age" placeholder="请输入年龄">
        </div>

        <div class="form-group">
            <label for="address">籍贯：</label>
            <select name="address" class="form-control" id="address">
                <option value="武汉">武汉</option>
                <option value="南京">南京</option>
                <option value="上海">上海</option>
                <option value="广州">广州</option>
                <option value="青海">青海</option>
                <option value="天津">天津</option>
            </select>
        </div>

        <div class="form-group">
            <label for="qq">QQ：</label>
            <input type="text" class="form-control" id="qq" name="qq" placeholder="请输入QQ号码"/>
        </div>

        <div class="form-group">
            <label for="email">Email：</label>
            <input type="text" class="form-control" id="email" name="email" placeholder="请输入邮箱地址"/>
        </div>

        <div class="form-group" style="text-align: center">
            <input class="btn btn-primary" type="submit" value="提交" />
            <input class="btn btn-default" type="reset" value="重置" />
            <input class="btn btn-default" type="button"  value="返回" onclick="window.location.href='/list.jsp'"  >
        </div>
    </form>
</div>
</body>
</html>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="utf-8"/>
  <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <title>首页</title>

  <!-- 1. 导入CSS的全局样式 -->
  <link href="css/bootstrap.min.css" rel="stylesheet">
  <!-- 2. jQuery导入，建议使用1.9以上的版本 -->
  <script src="js/jquery-2.1.0.min.js"></script>
  <!-- 3. 导入bootstrap的js文件 -->
  <script src="js/bootstrap.min.js"></script>
  <script type="text/javascript">
  </script>
</head>
<body>

  <div >${
    
    user.name},欢迎您</div>
  <div align="center">
    <a
            href="${pageContext.request.contextPath}/findUserByPageServlet" style="text-decoration:none;font-size:33px">查询所有用户信息
    </a>
  </div>



</body>
</html>

list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html>
<!-- 网页使用的语言 -->
<html lang="zh-CN">
<head>
    <!-- 指定字符集 -->
    <meta charset="utf-8">
    <!-- 使用Edge最新的浏览器的渲染方式 -->
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <!-- viewport视口：网页可以根据设置的宽度自动进行适配，在浏览器的内部虚拟一个容器，容器的宽度与设备的宽度相同。
    width: 默认宽度与设备的宽度相同
    initial-scale: 初始的缩放比，为1:1 -->
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
    <title>用户信息管理系统</title>

    <!-- 1. 导入CSS的全局样式 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- 2. jQuery导入，建议使用1.9以上的版本 -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 3. 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
    <style type="text/css">
        td, th {
    
    
            text-align: center;
        }
    </style>

    <script>
        function deleteUser(id){
    
    
            //用户安全提示
            if(confirm("您确定要删除吗？")){
    
    
                //访问路径
                location.href="${pageContext.request.contextPath}/delUserServlet?id="+id;
            }
        }

        window.onload = function(){
    
    
            //给删除选中按钮添加单击事件
            document.getElementById("delSelected").onclick = function(){
    
    
                if(confirm("您确定要删除选中条目吗？")){
    
    

                   var flag = false;
                    //判断是否有选中条目
                    var cbs = document.getElementsByName("uid");
                    for (var i = 0; i < cbs.length; i++) {
    
    
                        if(cbs[i].checked){
    
    
                            //有一个条目选中了
                            flag = true;
                            break;
                        }
                    }

                    if(flag){
    
    //有条目被选中
                        //表单提交
                        document.getElementById("form").submit();
                    }

                }

            }
            //1.获取第一个cb
            document.getElementById("firstCb").onclick = function(){
    
    
                //2.获取下边列表中所有的cb
                var cbs = document.getElementsByName("uid");
                //3.遍历
                for (var i = 0; i < cbs.length; i++) {
    
    
                    //4.设置这些cbs[i]的checked状态 = firstCb.checked
                    cbs[i].checked = this.checked;

                }

            }


        }


    </script>
</head>
<body>
<div class="container">
    <h3 style="text-align: center">用户信息列表</h3>

    <div style="float: left;">

        <form class="form-inline" action="${pageContext.request.contextPath}/findUserByPageServlet" method="post">
            <div class="form-group">
                <label for="exampleInputName2">姓名</label>
                <input type="text" name="name" value="${condition.name[0]}" class="form-control" id="exampleInputName2" >
            </div>
            <div class="form-group">
                <label for="exampleInputName3">籍贯</label>
                <input type="text" name="address" value="${condition.address[0]}" class="form-control" id="exampleInputName3" >
            </div>

            <div class="form-group">
                <label for="exampleInputEmail2">邮箱</label>
                <input type="text" name="email" value="${condition.email[0]}" class="form-control" id="exampleInputEmail2"  >
            </div>
            <button type="submit" class="btn btn-default">查询</button>
        </form>

    </div>

    <div style="float: right;margin: 5px;">

        <a class="btn btn-primary" href="${pageContext.request.contextPath}/add.jsp">添加联系人</a>
        <a class="btn btn-primary" href="javascript:void(0);" id="delSelected">删除选中</a>

    </div>
    <form id="form" action="${pageContext.request.contextPath}/delSelectedServlet" method="post">
        <table border="1" class="table table-bordered table-hover">
        <tr class="success">
            <th><input type="checkbox" id="firstCb"></th>
            <th>编号</th>
            <th>姓名</th>
            <th>性别</th>
            <th>年龄</th>
            <th>籍贯</th>
            <th>QQ</th>
            <th>邮箱</th>
            <th>操作</th>
        </tr>

        <c:forEach items="${pb.list}" var="user" varStatus="s">
            <tr>
                <td><input type="checkbox" name="uid" value="${user.id}"></td>
                <td>${
    
    s.count}</td>
                <td>${
    
    user.name}</td>
                <td>${
    
    user.gender}</td>
                <td>${
    
    user.age}</td>
                <td>${
    
    user.address}</td>
                <td>${
    
    user.qq}</td>
                <td>${
    
    user.email}</td>
                <td><a class="btn btn-default btn-sm" href="${pageContext.request.contextPath}/findUserServlet?id=${user.id}">修改</a>&nbsp;
                    <a class="btn btn-default btn-sm" href="javascript:deleteUser(${user.id});">删除</a></td>
            </tr>

        </c:forEach>


    </table>
    </form>
    <div>
        <nav aria-label="Page navigation">
            <ul class="pagination">
                <c:if test="${pb.currentPage == 1}">
                    <li class="disabled">
                </c:if>

                <c:if test="${pb.currentPage != 1}">
                    <li>
                </c:if>


                    <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${pb.currentPage - 1}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}" aria-label="Previous">
                        <span aria-hidden="true">&laquo;</span>
                    </a>
                </li>


                <c:forEach begin="1" end="${pb.totalPage}" var="i" >


                    <c:if test="${pb.currentPage == i}">
                        <li class="active"><a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${i}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}">${
    
    i}</a></li>
                    </c:if>
                    <c:if test="${pb.currentPage != i}">
                        <li><a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${i}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}">${
    
    i}</a></li>
                    </c:if>

                </c:forEach>


                <li>
                    <a href="${pageContext.request.contextPath}/findUserByPageServlet?currentPage=${pb.currentPage + 1}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}" aria-label="Next">
                        <span aria-hidden="true">&raquo;</span>
                    </a>
                </li>
                <span style="font-size: 25px;margin-left: 5px;">
                    共${
    
    pb.totalCount}条记录，共${
    
    pb.totalPage}页
                </span>

            </ul>
        </nav>


    </div>


</div>


</body>
</html>

login.jsp

%@ page contentType="text/html;charset=UTF-8" language="java" %>

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <title>管理员登录</title>

    <!-- 1. 导入CSS的全局样式 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- 2. jQuery导入，建议使用1.9以上的版本 -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 3. 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
    <script type="text/javascript">
        //切换验证码
        function refreshCode(){
    
    
            //1.获取验证码图片对象
            var vcode = document.getElementById("vcode");

            //2.设置其src属性，加时间戳
            vcode.src = "${pageContext.request.contextPath}/checkCodeServlet?time="+new Date().getTime();
        }
    </script>
</head>
<body>
<div class="container" style="width: 400px;">
    <h3 style="text-align: center;">管理员登录</h3>
    <form action="${pageContext.request.contextPath}/loginServlet" method="post">
        <div class="form-group">
            <label for="user">用户名：</label>
            <input type="text" name="username" class="form-control" id="user" placeholder="请输入用户名"/>
        </div>

        <div class="form-group">
            <label for="password">密码：</label>
            <input type="password" name="password" class="form-control" id="password" placeholder="请输入密码"/>
        </div>

        <div class="form-inline">
            <label for="vcode">验证码：</label>
            <input type="text" name="verifycode" class="form-control" id="verifycode" placeholder="请输入验证码" style="width: 120px;"/>
            <a href="javascript:refreshCode();">
                <img src="${pageContext.request.contextPath}/checkCodeServlet" title="看不清点击刷新" id="vcode"/>
            </a>
        </div>
        <hr/>
        <div class="form-group" style="text-align: center;">
            <input class="btn btn btn-primary" type="submit" value="登录">
        </div>
    </form>

    <!-- 出错显示的信息框 -->
    <div class="alert alert-warning alert-dismissible" role="alert">
        <button type="button" class="close" data-dismiss="alert" >
            <span>&times;</span>
        </button>
        <strong>${
    
    login_msg}</strong>
    </div>
</div>
</body>
</html>

update.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<!-- 网页使用的语言 -->
<html lang="zh-CN">
    <head>
        <!-- 指定字符集 -->
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>修改用户</title>

        <link href="css/bootstrap.min.css" rel="stylesheet">
        <script src="js/jquery-2.1.0.min.js"></script>
        <script src="js/bootstrap.min.js"></script>
        
    </head>
    <body>
        <div class="container" style="width: 400px;">
        <h3 style="text-align: center;">修改联系人</h3>
        <form action="${pageContext.request.contextPath}/updateUserServlet" method="post">
            <!--  隐藏域 提交id-->
            <input type="hidden" name="id" value="${user.id}">

          <div class="form-group">
            <label for="name">姓名：</label>
            <input type="text" class="form-control" id="name" name="name"  value="${user.name}" readonly="readonly" placeholder="请输入姓名" />
          </div>

          <div class="form-group">
            <label>性别：</label>
              <c:if test="${user.gender == '男'}">
                  <input type="radio" name="gender" value="男" checked />男
                  <input type="radio" name="gender" value="女"  />女
              </c:if>

              <c:if test="${user.gender == '女'}">
                  <input type="radio" name="gender" value="男"  />男
                  <input type="radio" name="gender" value="女" checked  />女
              </c:if>


          </div>

          <div class="form-group">
            <label for="age">年龄：</label>
            <input type="text" class="form-control" value="${user.age}" id="age"  name="age" placeholder="请输入年龄" />
          </div>

          <div class="form-group">
            <label for="address">籍贯：</label>
             <select name="address" id="address" class="form-control" >
                 <c:if test="${user.address == '武汉'}">
                     <option value="武汉" selected>武汉</option>
                     <option value="南京">南京</option>
                     <option value="上海">上海</option>
                     <option value="广州">广州</option>
                     <option value="青海">青海</option>
                     <option value="天津">天津</option>
                 </c:if>

                 <c:if test="${user.address == '南京'}">
                     <option value="武汉">武汉</option>
                     <option value="南京" selected>南京</option>
                     <option value="上海">上海</option>
                     <option value="广州">广州</option>
                     <option value="青海">青海</option>
                     <option value="天津">天津</option>
                 </c:if>

                 <c:if test="${user.address == '上海'}">
                     <option value="武汉">武汉</option>
                     <option value="南京">南京</option>
                     <option value="上海"selected>上海</option>
                     <option value="广州">广州</option>
                     <option value="青海">青海</option>
                     <option value="天津">天津</option>
                 </c:if>

                 <c:if test="${user.address == '广州'}">
                     <option value="武汉">武汉</option>
                     <option value="南京">南京</option>
                     <option value="上海">上海</option>
                     <option value="广州" selected>广州</option>
                     <option value="青海">青海</option>
                     <option value="天津">天津</option>
                 </c:if>

                 <c:if test="${user.address == '青海'}">
                     <option value="武汉">武汉</option>
                     <option value="南京">南京</option>
                     <option value="上海">上海</option>
                     <option value="广州">广州</option>
                     <option value="青海" selected>青海</option>
                     <option value="天津">天津</option>
                 </c:if>

                 <c:if test="${user.address == '天津'}">
                     <option value="武汉">武汉</option>
                     <option value="南京">南京</option>
                     <option value="上海">上海</option>
                     <option value="广州">广州</option>
                     <option value="青海">青海</option>
                     <option value="天津" selected>天津</option>
                 </c:if>
            </select>
          </div>

          <div class="form-group">
            <label for="qq">QQ：</label>
            <input type="text" id="qq" class="form-control" value="${user.qq}" name="qq" placeholder="请输入QQ号码"/>
          </div>

          <div class="form-group">
            <label for="email">Email：</label>
            <input type="text" id="email" class="form-control" value="${user.email}" name="email" placeholder="请输入邮箱地址"/>
          </div>

             <div class="form-group" style="text-align: center">
                <input class="btn btn-primary" type="submit" value="提交" />
                <input class="btn btn-default" type="reset" value="重置" />
                <input class="btn btn-default" type="button" value="返回"/>
             </div>
        </form>
        </div>
    </body>
</html>

六、Mysql数据库表结构和druid文件配置

在这里插入图片描述

七、其他

往期文章

三层架构实现jsp页面访问并且查询数据库里面数据（mysql)并且使用JDBCUtils和druid简化sql书写

IDEA+JSP+Servlet+Tomcat实现的学生成绩管理系统

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IDEA+jsp+Mysql+bootstrap+druid实现黑马学生信息管理系统

IDEA+jsp+Mysql+Tomcat+bootstrap+druid实现黑马学生信息管理系统

文章目录

前言

一、项目结构展示

1.后端项目结构展示

2.前端项目结构展示

二、项目逻辑结构展示

1.MVC开发模式

2.三层架构

3.登录功能

4.列表查询

5.添加功能

6.修改功能

7.删除功能

8.简单和复杂条件分页查询

9.过滤敏感词汇

三、项目实现功能界面展示

验证码 账号 密码登录界面

登录成功界面

查询学生信息列表界面

条件查询学生信息列表界面

修改生信息界面

添加学生信息界面

删除学生信息界面

四、项目后端源码展示

UserDaoImpl

UserDao

PageBean

User

UserServiceImpl

UserService

JDBCUtils

LoginFilter

SensitiveWordsFilter

AddUserServlet

CheckCodeServlet

DelSelectedServlet

DelUserServlet

FindUserByPageServlet

FindUserServlet

LoginServlet

UpdateUserServlet

UserListServlet

五、项目前端源码展示

add.jsp

index.jsp

list.jsp

login.jsp

update.jsp

六、Mysql数据库表结构和druid文件配置

七、其他

往期文章

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