1. 实现流程

2. 后端接口开发

2.1 完成DAO操作

1. 创建实体类

	@Data
	@NoArgsConstructor
	@AllArgsConstructor
	@ApiModel(value = "User对象",description = "⽤户/买家信息")
	public class User 
		 private int userId;
		 private String username;
		 private String password;
		 private String nickname;
		 private String realname;
		 private String userImg;
		 private String userMobile;
		 private String userEmail;
		 private String userSex;
		 private Date userBirth;
		 private Date userRegtime;
		 private Date userModtime;

2. 创建DAO接口、定义操作⽅法

public interface UserDAO 
 	//⽤户注册
	 public int insert(User user);
 
	 //根据⽤户名查询⽤户信息
	 public User query(String name);
;

3. 创建DAO接口的mapper⽂件并完成配置

<mapper namespace="com.qfedu.fmmall.dao.UserDAO">
 	<insert id="insertUser">
 		insert into users(username,password,user_regtime,user_modtime)
					 values(#username,#password,#userRegtime,#userModtime)
 	</insert>
 	<resultMap id="userMap" type="User">
		 <id column="user_id" property="userId"/>
		 <result column="username" property="username"/>
		 <result column="password" property="password"/>
		 <result column="nickname" property="nickname"/>
		 <result column="realname" property="realname"/>
		 <result column="user_img" property="userImg"/>
		 <result column="user_mobile" property="userMobile"/>
		 <result column="user_email" property="userEmail"/>
		 <result column="user_sex" property="userSex"/>
		 <result column="user_birth" property="userBirth"/>
		 <result column="user_regtime" property="userRegtime"/>
		 <result column="user_modtime" property="userModtime"/>
 	</resultMap>
 	<select id="queryUserByName" resultMap="userMap">
 		select
			 user_id,
			 username,
			 password,
			 nickname,
			 realname,
			 user_img,
			 user_mobile,
			 user_email,
			 user_sex,
			 user_birth,
			 user_regtime,
			 user_modtime
		from users
		where username=#name
 	</select>
</mapper>

2.2 完成Service业务

1. 创建service接口

	public interface UserService 
		 //⽤户注册
		 public ResultVO userResgit(String name, String pwd);
 		 //⽤户登录
 		 public ResultVO checkLogin(String name, String pwd);

2. 创建service接口实现类，完成业务实现

@Service
public class UserServiceImpl implements UserService 

	 @Autowired
	 private UserDAO userDAO;
	 
 	@Transactional
 	public ResultVO userResgit(String name, String pwd) 
 		synchronized (this) 
 	//1.根据⽤户查询，这个⽤户是否已经被注册
		 User user = userDAO.queryUserByName(name);
    //2.如果没有被注册则进⾏保存操作
 		if (user == null) 
 			 String md5Pwd = MD5Utils.md5(pwd);
			 user = new User();
			 user.setUsername(name);
			 user.setPassword(md5Pwd);
			 user.setUserRegtime(new Date());
			 user.setUserModtime(new Date());
			 int i = userDAO.insertUser(user);
			 if (i > 0) 
			 	return new ResultVO(10000, "注册成功！", null);
			  else 
			 	return new ResultVO(10002, "注册失败！", null);
			 
			  else 
			 	return new ResultVO(10001, "⽤户名已经被注册！", null);
			 
		 
		 @Override
		 public ResultVO checkLogin(String name, String pwd) 
 				User user = userDAO.queryUserByName(name);
				if(user == null)
					 return new ResultVO(10001,"登录失败，⽤户名不存在！",null);
				 else
				 String md5Pwd = MD5Utils.md5(pwd);
				 if(md5Pwd.equals(user.getPassword()))
				 	return new ResultVO(10000,"登录成功！",user);
				 else
					 return new ResultVO(10001,"登录失败，密码错误！",null);
	   
 

2.3 完成Controller提供接口

1. 创建controller，调⽤service
2. 添加接口注解

@RestController
@RequestMapping("/user")
@Api(value = "提供⽤户的登录和注册接⼝",tags = "⽤户管理")
	public class UserController 
		 @Resource
		 private UserService userService;
 		 @ApiOperation("⽤户登录接⼝")
 	     @ApiImplicitParams(
         @ApiImplicitParam(dataType = "string",name = "username", value = "⽤户登录账
号",required = true),
 		 @ApiImplicitParam(dataType = "string",name = "password", value = "⽤户登录密
码",required = true)
 )
 		 @GetMapping("/login")
 		 public ResultVO login(@RequestParam("username") String name,
    	 @RequestParam(value = "password") String pwd)
 		 ResultVO resultVO = userService.checkLogin(name, pwd);
         return resultVO;
      
		 @ApiOperation("⽤户注册接⼝")
		 @ApiImplicitParams(
		 @ApiImplicitParam(dataType = "string",name = "username", value = "⽤户注册账
		号",required = true),
		 @ApiImplicitParam(dataType = "string",name = "password", value = "⽤户注册密
		码",required = true)
		)
 		@PostMapping("/regist")
	    public ResultVO regist(String username,String password)
 			ResultVO resultVO = userService.userResgit(username, password);
		    return resultVO;
    

2.4 接口测试

基于swagger进行测试