Java remember password function implementation code
•
Java
Preparation: SSM framework, MySQL database
User table user
Entity class:
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"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 命名空间 -->
<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 layer
public interface UserMapper {
User getUserByname(String username);
}
Service layer
public interface UserService {
User getUserByname(String username,String password,HttpSession session,HttpServletRequest httpServletRequest,HttpServletResponse httpServletResponse);
}
impl
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public ResultVO getUserByname(String username,HttpServletResponse httpServletResponse) {
String remember = httpServletRequest.getParameter("remember");
if (username!= null && username!= 0){
User user = userMapper.getUserByname(username);
if (user != null && user.getpassword().equals(password)){
session.setAttribute("user",user);
if (remember != null){
Cookie cookieUser = new Cookie("username",username);
Cookie cookiePass = new Cookie("password",password);
cookieUser.setMaxAge(60 * 60 * 24);
cookiePass.setMaxAge(60 * 60 * 24);
httpServletResponse.addCookie(cookieUser);
httpServletResponse.addCookie(cookiePass);
return ResultVO.success(user);
}
return ResultVO.error(1,"用户名或密码错误");
}
return ResultVO.error(3,"用户名或密码不能为空");
}
}
Controller
@RestController
public class UserController {
@Autowired
private UserService userService;
//登录
@RequestMapping("/getUserByname")
public ResultVO getUserByname(String username,HttpServletResponse httpServletResponse){
return userService.getUserByname(username,password,session,httpServletRequest,httpServletResponse);
}
}
Front end code (JSP)
HTML, the style is bootstrap
<%@ taglib prefix="c" uri="http://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(255,255,0.7);
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%20}/getVerifyCode" width="110" height="34" id="verifyCodeImage">
</div>
</div>
<div class="custom-control custom-check@R_6_2419@ mb-3 was-validated">
<input type="check@R_6_2419@" 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>
summary
The above is the implementation code of Java remember password function introduced by Xiaobian. I hope it will help you. If you have any questions, please leave me a message, and Xiaobian will reply to you in time. Thank you very much for your support to our website! If you think this article is helpful to you, welcome to reprint, please indicate the source, thank you!
The content of this article comes from the network collection of netizens. It is used as a learning reference. The copyright belongs to the original author.
THE END
二维码