如何编写JAVA实现密码记忆功能的代码？

2026-05-28 09:151阅读0评论SEO教程

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准备使用Spring MVC框架和MySQL数据库。定义用户实体类：

javapublic class User { // 主键id private Integer userId; // 账号 private String username; // 密码 private String password;

public Integer getUserId() { return userId; }}

准备：SSM框架，mysql数据库

用户表 user

实体类：

public class User { /** * 主键id */ private Integer userId; /** * 账号 */ private String username; /** * 密码 */ private String password; public Integer getUserId() { return userId; } public void setUserId(Integer userId) { this.userId = userId; } 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; } }

UserMapper

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "mybatis.org/dtd/mybatis-3-mapper.dtd">  <mapper namespace="com.luowx.mapper.UserMapper"> <resultMap id="userMap" type="User"> <id property="userId" column="user_id"/> <result property="username" column="username"/> <result property="password" column="password"/> </resultMap> <select id="getUserByname" resultMap="userMap"> select * from s_user where username=#{username} </select> </mapper>

mapper层

public interface UserMapper { User getUserByname(String username); }

service层

public interface UserService { User getUserByname(String username, String password, HttpSession session, HttpServletRequest java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>登录</title> <link rel="stylesheet" href="/bootstrap4/css/bootstrap.min.css" rel="external nofollow" > <style> body{ background-color: #fafafa; } .nice{ position: relative; display: flex; align-items: center; justify-content: center; } .container{ margin-top: 100px; display: flex; justify-content: space-between; border: #b3b7bb 2px solid; border-radius: 5px; } #loginForm{ width: 300px; background-color: rgba(255,255,255,0.7); margin-top: 30px; border: #b3b7bb 1px solid; border-radius: 5px; } </style> </head> <body> <div class="container"> <div><img src="img/login_bg_pic.jpg"></div> <form action="getUserByname" method="post" id="loginForm"> <div class="form-group"> <label for="exampleInputEmail1">用户名</label> <input type="text" class="form-control" id="exampleInputEmail1" name="userId" autocomplete="off" value="${userId}"> </div> <div class="form-group"> <label for="exampleInputPassword1">密码</label> <input type="password" class="form-control" id="exampleInputPassword1" name="password" value="${password}"> </div> <%--验证码--%> <div class="form-group"> <div class="input-icon" style="display: flex;justify-content: space-around;align-items: center"> <i class="fa fa-picture-o"></i> <input class="form-control" style="width:180px;" type="text" id="verifyCode" name="verifyCode" placeholder="验证码" maxlength="4" autocomplete="off"> <img src="${pageContext.request.contextPath }/getVerifyCode" width="110" height="34" id="verifyCodeImage"> </div> </div> <div class="custom-control custom-checkbox mb-3 was-validated"> <input type="checkbox" class="custom-control-input" id="rem" name="remember" checked> <label class="custom-control-label" for="rem">记住密码</label> </div> <button type="button" class="btn btn-primary login">登录</button> <a href="/forgotpass" rel="external nofollow" ><button type="button" class="btn btn-danger">忘记密码</button></a> <br><br> <div class="nice"> 欢迎来到:<br>教务综合信息服务平台 </div> </form> <script src="/js/jquery-3.4.1.min.js"></script> <script src="/bootstrap4/js/bootstrap.min.js"></script> <script> $(function () { $(".login").click(function () { //发送ajax请求 $.ajax({ url:'getUserByname', type:'post', data:$("#loginForm").serialize(), success:function (res) { console.log(res); if (res.status === 0){ if(res.data.role === 0) { location.href = "overview"; }else if (res.data.role === 1){ location.href = "teacher"; }else if (res.data.role === 2){ location.href = "teacher"; }else if (res.data.role === 3){ location.href = "student"; } } else { $(".nice").html("<div>" + res.message + "</div>"); } } }); }); }); </script> </div> </body> </html>

总结

以上所述是小编给大家介绍的JAVA记住密码功能的实现代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对易盾网络网站的支持！
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标签：实现代码准备 SSM