示例代码：
1. Users类
package com.po;public class Users { ???private String username; ???private String password; ???public Users(){} ???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; ???}}2. DAO类
package com.dao;import com.po.Users;public class UsersDAO { ???// 用户登录方法 ???public boolean usersLogin(Users u){ ???????return ("admin".equals(u.getUsername()) && "admin".equals(u.getPassword())); ???}}3. HTML代码
<%@ page contentType="text/html;charset=UTF-8" %><jsp:useBean id="loginUser" class="com.po.Users" /><jsp:useBean id="userDAO" class="com.dao.UsersDAO" /><jsp:setProperty name="loginUser" property="*" /><% ???// 如果用户名和密码都等于admin，则登录成功 ???if(userDAO.usersLogin(loginUser)){ ???????session.setAttribute("loginUser", loginUser.getUsername()); ???????request.getRequestDispatcher("login_success.jsp").forward(request, response); ???}else { ???????response.sendRedirect("login_failure.jsp"); ???}%>JSP DAO(Model)
原文地址：https://www.cnblogs.com/vincenshen/p/10227582.html