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JAVA中怎么实现记住密码功能

发布时间:2021-08-07 15:13:41 来源:亿速云 阅读:217 作者:Leah 栏目:编程语言

本篇文章为大家展示了JAVA中怎么实现记住密码功能,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。

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"    "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层

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

service层

public interface UserService {  User getUserByname(String username, String password, HttpSession session, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse);}

impl

@Servicepublic class UserServiceImpl implements UserService {  @Autowired  private UserMapper userMapper;  @Override  public ResultVO getUserByname(String username, String password, HttpSession session, HttpServletRequest httpServletRequest, 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

@RestControllerpublic class UserController {  @Autowired  private UserService userService;  //登录  @RequestMapping("/getUserByname")  public ResultVO getUserByname(String username, String password, HttpSession session, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse){    return userService.getUserByname(username, password, session, httpServletRequest, httpServletResponse);  }}

前端代码(JSP)

html的自己修改下,样式是BootStrap的

<%@ 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(255,255,255,0.7);      margin-top: 30px;      border: #b3b7bb 1px solid;      border-radius: 5px;    }  </style></head><body><p class="container">  <p><img src="img/login_bg_pic.jpg"></p>  <form action="getUserByname" method="post" id="loginForm">    <p class="form-group">      <label for="exampleInputEmail1">用户名</label>      <input type="text" class="form-control" id="exampleInputEmail1" name="userId" autocomplete="off" value="${userId}">    </p>    <p class="form-group">      <label for="exampleInputPassword1">密码</label>      <input type="password" class="form-control" id="exampleInputPassword1" name="password" value="${password}">    </p>    <%--验证码--%>    <p class="form-group">      <p class="input-icon" >        <i class="fa fa-picture-o"></i>        <input class="form-control"  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">      </p>    </p>    <p 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>    </p>    <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>    <p class="nice">      欢迎来到:<br>教务综合信息服务平台    </p>  </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("<p>" + res.message + "</p>");            }          }        });      });    });  </script></p></body></html>

上述内容就是JAVA中怎么实现记住密码功能,你们学到知识或技能了吗?如果还想学到更多技能或者丰富自己的知识储备,欢迎关注亿速云行业资讯频道。

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