先看一下工程目录

1.png

创建UserController类

在主方法上加上这两个注释：

@Controller
@RequestMapping("/user/")

如：

2.png

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");

    }