5、用户模块接口开发——登录、注销和注册

素颜马尾好姑娘i 2022-05-14 13:30 222阅读 0赞

先看一下工程目录  
![这里写图片描述][70]  
创建`UserController`类

在主方法上加上这两个注释：

@Controller
    @RequestMapping("/user/")

如：  
![这里写图片描述][70 1]

### 1、登录接口： ###

`Controller:` 层

//登录
        @RequestMapping(value = "login.do",method = RequestMethod.POST)
        @ResponseBody
        public ServerResponse<User> login(String username, String password, HttpSession session){
            //service>> mybatis>>dao
            ServerResponse<User> response= iUserService.login(username,password);
            if(response.isSussecc()){
                session.setAttribute(Const.CURRENT_USER,response.getData());
            }
            return response;
        }

`Service` 层：

//登录
        @Override
        public ServerResponse<User> login(String username, String password) {
            int resultCount= userMapper.checkUsername(username);
    
            if(resultCount==0){
                return ServerResponse.createByErrorMessage("用户名不存在");
    
            }
            //TODO 密码登录MD5
    
            String md5Password=MD5Util.MD5EncodeUtf8(password);
    
            User user=userMapper.selectLogin(username,password);
            if(user==null){
                return  ServerResponse.createByErrorMessage("密码错误");
            }
            user.setPassword(StringUtils.EMPTY);
            return ServerResponse.createBySuccessMessage("登录成功",user);
        }

### 2、注销接口： ###

`Controller` : 层

//注销 删除里面的Session即可
        @RequestMapping(value = "logout.do",method = RequestMethod.GET)
        @ResponseBody
        public ServerResponse<String> logout(HttpSession session){
            session.removeAttribute(Const.CURRENT_USER);
            return ServerResponse.createBySuccess();
        }

由于只要删除Session,所以不需要涉及到Service层。

### 3、注册接口： ###

`Controller` : 层

//注册
        @RequestMapping(value = "regiest.do",method = RequestMethod.POST)
        @ResponseBody
        public ServerResponse<String> regiest(User user){
            return iUserService.regiest(user);
        }
    
        //校验邮箱或用户名不否能用
        @RequestMapping(value = "check_valid.do",method = RequestMethod.POST)
        @ResponseBody
        public ServerResponse<String> checkValid(String str,String type){
            return iUserService.checkValid(str,type);
        }

`Service` 层

//注册方法
        @Override
        public ServerResponse<String> regiest(User user){
    
    //复用下面的checkValid校验方法
            ServerResponse validRespose=this.checkValid(user.getUsername(),Const.USERNAME);
            if(!validRespose.isSussecc()){
                return validRespose;
            }
    
            validRespose=this.checkValid(user.getEmail(),Const.EMAIL);
            if(!validRespose.isSussecc()){
                return validRespose;
            }
    
            user.setRole(Const.Role.ROLE_CUSTOMER);
    
            //MD5加密
            user.setPassword(MD5Util.MD5EncodeUtf8(user.getPassword()));
    
            int resultCount=userMapper.insert(user);
    
            if(resultCount==0){
                return ServerResponse.createByErrorMessage ("服务器内部错误，注册失败");
            }
    
            return ServerResponse.createBySuccessMessage("注册成功");
    
        }
    
        //判断用户名和邮箱是否有效
        public ServerResponse<String> checkValid(String str,String type){
            if(StringUtils.isNotBlank(type)){
                //开始校验
                if(Const.USERNAME.equals(type)){
                    int resultCount= userMapper.checkUsername(str);
                    if(resultCount>0){
                        return ServerResponse.createByErrorMessage("用户名已存在");
                    }
    
                }
                if(Const.EMAIL.equals(type)){
                     int resultCount=userMapper.checkEmail(str);
    
                    if(resultCount>0){
                        return ServerResponse.createByErrorMessage("email已存在");
                    }
    
                }
            }
            else{
                return ServerResponse.createByErrorMessage("参数错误");
            }
            return ServerResponse.createBySuccessMessage("校验成功");
    
        }

[70]: /images/20220514/75509497f32c42ec918370095d2b7b6c.png
[70 1]: /images/20220514/e4af0885bfeb4d7f954ce512e3f80e03.png