JAVA记住密码功能的实现代码

准备：SSM框架，mysql数据库

用户表 user

实体类：

public class User {
  
  private Integer userId;
  
  private String username;
  
  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

  
    
    
    
  

  
    select * from s_user where username=#{username}
  

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

@Service
public 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

@RestController
public 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" %>


  
  
  
    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;
    }
  



  
  
  
  
  

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考高分网网站的支持！
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