Mybatis-Plus和分层，封装对象等....

src/main/java/com/watu/demo1/Controller/UserController.java

@@ -1,5 +1,6 @@
 package com.watu.demo1.Controller;
 
+import com.watu.demo1.Service.IUserPlusService;
 import com.watu.demo1.mapper.UserMapper;
 import com.watu.demo1.pojo.DTO.UserDTO;
 import com.watu.demo1.pojo.entity.User;
@@ -11,45 +12,63 @@ import org.springframework.web.bind.annotation.*;
 import java.util.List;
 
 @RestController
-@RequestMapping("v1/test/")
+@RequestMapping("v1/Plus/")
 public class UserController {
-    @Autowired(required = false)
-    private UserMapper userMapper;
+//    @Autowired(required = false)
+//    private UserMapper userMapper;
+//
+//    /**添加员工*/
+//    @PostMapping("insert")
+//    public String addUser(@RequestBody UserDTO userDTO){
+//        User user = new User();
+//        BeanUtils.copyProperties(userDTO,user);
+//        int insert = userMapper.insertUser(user);
+//        return (insert != 0) ? "添加成功" : "添加失败";
+//    }
+//
+////    /**查询员工*/
+////    @GetMapping("select")
+////    public UserVO selectUser(){
+////        List<UserVO> List = userMapper.selectAll();
+////        return new JsonResult(StatusCode.OPERATION_SUCCESS,list);
+////    }
+//    /**根据ID来查询员工*/
+//    @GetMapping("select/{id}")
+//    public UserVO selectUser(@PathVariable int id){
+//        UserVO userVO = userMapper.selectById(id);
+//        return userVO;
+//    }
+//    /**更新*/
+//    @PostMapping("/update")
+//    public String updateUser(@RequestBody User user){
+//        int insert = userMapper.updateUser(user);
+//        return (insert != 0) ? "添加成功" : "添加失败";
+//    }
+//    /**删除*/
+//    @GetMapping("delete/{id}")
+//    public String deleteUser(@PathVariable int id){
+//        int insert = userMapper.deleteUser(id);
+//        return (insert != 0) ? "添加成功" : "添加失败";
+//    }
 
-    /**添加员工*/
-    @PostMapping("insert")
-    public String addUser(@RequestBody UserDTO userDTO){
-        User user = new User();
-        BeanUtils.copyProperties(userDTO,user);
-        int insert = userMapper.insertUser(user);
-        if (insert!=0){
-            return "添加成功";
-        }
-        return "添加失败";
+    @Autowired
+    IUserPlusService service;
+    @PostMapping("add")
+    public void addNewUser(@RequestBody UserDTO userDTO){
+        service.addUser(userDTO);
     }
-
-//    /**查询员工*/
-//    @GetMapping("select")
-//    public UserVO selectUser(){
-//        List<UserVO> List = userMapper.selectAll();
-//        return new JsonResult(StatusCode.OPERATION_SUCCESS,list);
-//    }
-    /**根据ID来查询员工*/
-    @GetMapping("select/{id}")
-    public UserVO selectUser(@PathVariable int id){
-        UserVO userVO = userMapper.selectById(id);
-        return userVO;
+    @GetMapping("delete/{id}")
+    public void delete(@PathVariable Long id){
+        service.deleteById(id);
     }
-    /**更新*/
-    @PostMapping("/update")
-    public String updateUser(@RequestBody User user){
-        int insert = userMapper.updateUser(user);
-        return (insert != 0) ? "添加成功" : "添加失败";
+    @PostMapping("select")
+    public void select(@RequestBody UserDTO userDTO){
+        service.selectByName(userDTO);
     }
-    /**删除*/
-    @GetMapping("delete/{id}")
-    public String deleteUser(@PathVariable int id){
-        int insert = userMapper.deleteUser(id);
-        return (insert != 0) ? "添加成功" : "添加失败";
+    @PostMapping("update/d1")
+    public void update(@RequestBody UserDTO userDTO){
+        service.updateById(userDTO);
     }
+
+
 }

src/main/java/com/watu/demo1/Service/IUserPlusService.java

@@ -4,7 +4,37 @@ import com.watu.demo1.pojo.DTO.UserDTO;
 import com.watu.demo1.pojo.entity.User;
 
 public interface IUserPlusService {
+    /**
+     *增
+     * 插入类别数据
+     *
+     * @param userDTO 类别数据
+     *
+     */
     void addUser(UserDTO userDTO);
 
+    /**
+     * 删
+     * 删除类别数据
+     *
+     *
+     * @return 受影响的行数
+     * */
+    int deleteById(Long id);
 
+    /**
+     * 查
+     * 挑选出一些类别数据
+     *
+     * @param
+     * */
+    int selectByName(UserDTO userDTO);
+    /**
+     * 改
+     * 修改
+     *
+     * @param userDTO 类别数据
+     * @return 受影响的行数
+     * */
+    int updateById(UserDTO userDTO);
 }

src/main/java/com/watu/demo1/Service/Impl/UserPlusServiceImpl.java

@@ -1,9 +1,11 @@
 package com.watu.demo1.Service.Impl;
 
 
+import com.sun.org.apache.bcel.internal.generic.NEW;
 import com.watu.demo1.Service.IUserPlusService;
 import com.watu.demo1.pojo.DTO.UserDTO;
 import com.watu.demo1.pojo.entity.User;
+import com.watu.demo1.pojo.vo.UserVO;
 import com.watu.demo1.repository.IUserPlusRepository;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -26,9 +28,25 @@ public class UserPlusServiceImpl implements IUserPlusService {
         User user = new User();
         BeanUtils.copyProperties(userDTO,user);
         iUserPlusRepository.insert(user);
+        System.out.println("古德古德");
     }
 
+    @Override
+    public int deleteById(Long id) {
+        return iUserPlusRepository.deleteById(id);
+    }
 
+    @Override
+    public int selectByName(UserDTO userDTO) {
+        return iUserPlusRepository.countByName(userDTO.getName());
+    }
+
+    @Override
+    public int updateById(UserDTO userDTO) {
+        UserVO userVO = new UserVO();
+        BeanUtils.copyProperties(userDTO,userVO);
+        return iUserPlusRepository.updateById(userVO);
+    }
 
 
 }

src/main/java/com/watu/demo1/pojo/vo/UserVO.java

@@ -1,12 +1,15 @@
 package com.watu.demo1.pojo.vo;
 
 
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
 import lombok.Data;
 
 import java.io.Serializable;
 
 @Data
 public class UserVO  {
+    @TableId(type = IdType.AUTO)
     private Integer id;
     private String name;
     private Integer age;

src/main/java/com/watu/demo1/repository/IUserPlusRepository.java

@@ -2,24 +2,47 @@ package com.watu.demo1.repository;
 
 
 import com.watu.demo1.pojo.entity.User;
+import com.watu.demo1.pojo.vo.UserVO;
 
 /**
  * Repository层
  */
 public interface IUserPlusRepository {
     /**
-     *插入类别数据
+     *增
+     * 插入类别数据
      *
      * @param user 类别数据
      * @return 受影响的行数
      */
     int insert(User user);
+    /**
+     *删
+     * 删除类别数据
+     *
+     * @param name 类别数据
+     * @return 受影响的行数
+     * */
+    int deleteByName(String name);
 
+    int deleteById(Long id);
     /**
-     *根据名称统计类别数据的数量
+     * 改
+     *根据ID修改类别
      *
+     * @param uservo UserVO里面封装了id姓名
+     * @return 更改的行数
+     * */
+    int updateById(UserVO uservo);
+
+
+
+    /**
+     *根据名称统计类别数据的数量
+     *查
      * @param name 类别名称
      * @return 匹配名称的类别数据的数量
      * */
     int countByName(String name);
+
 }

src/main/java/com/watu/demo1/repository/Impl/UserPlusRepositoryImpl.java

@@ -3,7 +3,9 @@ package com.watu.demo1.repository.Impl;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.watu.demo1.mapper.UserPlusMapper;
 import com.watu.demo1.pojo.entity.User;
+import com.watu.demo1.pojo.vo.UserVO;
 import com.watu.demo1.repository.IUserPlusRepository;
+import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
 
@@ -12,17 +14,49 @@ public class UserPlusRepositoryImpl implements IUserPlusRepository {
     @Autowired
     private UserPlusMapper userPlusMapper;
 
-    /**插入一个数据*/
+    /**
+     * 增  插入一个数据
+     */
     @Override
-    public int insert(User user){
+    public int insert(User user) {
         return userPlusMapper.insert(user);
     }
 
-    /**根据名字查询*/
+    /**
+     * 删 删除一个数据
+     */
     @Override
-    public int countByName(String name) {
+    public int deleteByName(String name) {
         QueryWrapper<User> queryWrapper = new QueryWrapper<>();
         queryWrapper.eq("name",name);
+        return userPlusMapper.delete(queryWrapper);
+    }
+
+    @Override
+    public int deleteById(Long id) {
+        return userPlusMapper.deleteById(id);
+    }
+
+
+
+    /**
+     * 改 根据id更新
+     */
+    @Override
+    public int updateById(UserVO uservo) {
+        User user = new User();
+        BeanUtils.copyProperties(uservo,user);
+        return userPlusMapper.updateById(user);
+    }
+
+
+    /**
+     * 查 根据名字查询
+     */
+    @Override
+    public int countByName(String name) {
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("name", name);
         return userPlusMapper.selectCount(queryWrapper);
     }
 

src/test/java/com/watu/demo1/Demo1ApplicationTests.java

@@ -5,6 +5,7 @@ import com.watu.demo1.mapper.UserMapper;
 import com.watu.demo1.mapper.UserPlusMapper;
 import com.watu.demo1.pojo.DTO.UserDTO;
 import com.watu.demo1.pojo.entity.User;
+import com.watu.demo1.pojo.vo.UserVO;
 import com.watu.demo1.repository.IUserPlusRepository;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -79,12 +80,28 @@ class Demo1ApplicationTests {
     /********************************************************************************/
     @Autowired
     IUserPlusRepository userPlusRepository;
+
     @Test
     void countByNameTest() {
         String name = "测试的人-1";
         int countByName = userPlusRepository.countByName(name);
         System.out.println("统计完成" + countByName);
     }
+
+    @Test
+    void deleteByNameTest() {
+        String name = "无名的人";
+        int count = userPlusRepository.deleteByName(name);
+        System.out.println("删除了" +count + "人");
+    }
+
+    @Test
+    void updateByIdTest(){
+        UserVO userVO = new UserVO();
+        userVO.setId(36);
+        userVO.setName("更新的人2");
+        userPlusRepository.updateById(userVO);
+    }
 /********************************************************************************/
 /********************************************************************************/
 /********************************************************************************/
@@ -104,5 +121,13 @@ class Demo1ApplicationTests {
         }
     }
 
+    @Test
+    void Test(){
+        UserDTO userDTO = new UserDTO();
+        userDTO.setName("更新的人3");
+        userDTO.setId(36);
+        service.updateById(userDTO);
+    }
+
 
 }