手摸手2-springboot编写基础的增删改查
目录
-
- 手摸手2-springboot编写基础的增删改查
-
- 创建controller层
- 添加service层接口
- service层实现
- 添加mapper层
- mapper层对应的sql
- 添加扫描注解,对应sql文件的目录
手摸手2-springboot编写基础的增删改查
创建controller层
实现 test 表中的添加、修改、删除及列表查询接口（未分页)
package com.onejson.ojmall.controller;
import com.onejson.ojmall.entity.TestEntity;
import com.onejson.ojmall.entity.dto.TestDTO;
import com.onejson.ojmall.entity.vo.TestVO;
import com.onejson.ojmall.service.ITestService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
import java.util.List;
/**
* 测试表
*
* @author 微信公众号 onejson
* @date 2023-08-11
*/
@RestController
@RequestMapping(path = "/test", produces = "application/json;charset=UTF-8")
@Api(value = "/test", tags = "测试表", produces = "application/json;charset=UTF-8")
public class TestController{
@Resource
private ITestService testService;
/**
* 查询列表
*/
@ApiOperation(value = "条件查询列表分页", notes = "条件查询列表分页")
@GetMapping("/list")
public List<TestEntity> list(TestEntity sysTest) {
return testService.selectTestList(sysTest);
}
/**
* 新增
*/
@ApiOperation(value = "新增")
@PostMapping
public boolean add(@Validated @RequestBody TestDTO testDTO) {
return testService.insertTest(testDTO);
}
/**
* 修改
*/
@ApiOperation(value = "更新")
@PutMapping
public boolean edit(@RequestBody TestDTO testDTO) {
return testService.updateTest(testDTO);
}
/**
* 详情
*/
@ApiOperation(value = "详情")
@GetMapping(value = "/{id}")
public TestVO getInfo(@PathVariable("id") Integer id) {
return testService.getTestById(id);
}
/**
* 删除
*/
@ApiOperation(value = "删除")
@DeleteMapping("/{ids}")
public boolean remove(@PathVariable Integer[] ids) {
return testService.removeTestByIds(ids);
}
}
添加service层接口
package com.onejson.ojmall.service;
import com.baomidou.mybatisplus.extension.service.IService;
import com.onejson.ojmall.entity.TestEntity;
import com.onejson.ojmall.entity.dto.TestDTO;
import com.onejson.ojmall.entity.vo.TestVO;
import java.util.List;
/**
* 测试表
*
* @author 微信公众号 onejson
* @date 2023-08-11 11:24:47
*/
public interface ITestService extends IService<TestEntity> {
/**
* 查询测试表列表
*
* @param testEntity 测试表Entity类
* @return list列表
*/
List<TestEntity> selectTestList(TestEntity testEntity);
/**
* 新增测试表
*
* @param testDTO 测试表DTO类
* @return 结果
*/
boolean insertTest(TestDTO testDTO);
/**
* 更新测试表
*
* @param testDTO 测试表DTO类
* @return 结果
*/
boolean updateTest(TestDTO testDTO);
/**
* 详情测试表
*
* @param id id值
* @return 结果
*/
TestVO getTestById(Integer id);
/**
* 删除测试表
*
* @param ids id数组
* @return 结果
*/
boolean removeTestByIds(Integer[] ids);
}
service层实现
package com.onejson.ojmall.service.impl;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.onejson.ojmall.entity.TestEntity;
import com.onejson.ojmall.entity.dto.TestDTO;
import com.onejson.ojmall.entity.vo.TestVO;
import com.onejson.ojmall.mapper.TestMapper;
import com.onejson.ojmall.service.ITestService;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.annotation.Resource;
import java.util.Arrays;
import java.util.List;
/**
* 测试表
*
* @author 微信公众号 onejson
* @date 2023-08-11
*/
@Service
@Transactional
public class TestServiceImpl extends ServiceImpl<TestMapper, TestEntity> implements ITestService {
@Resource
private TestMapper testMapper;
/**
* 查询测试表列表
*
* @param testEntity 测试表Entity类
* @return 测试表
*/
@Override
public List<TestEntity> selectTestList(TestEntity testEntity) {
return testMapper.selectTestList(testEntity);
}
/**
* 新增测试表
*
* @param testDTO 测试表DTO类
* @return 结果
*/
@Override
public boolean insertTest(TestDTO testDTO) {
TestEntity testInfoEntity = new TestEntity();
BeanUtils.copyProperties(testDTO, testInfoEntity);
return this.save(testInfoEntity);
}
/**
* 更新测试表
*
* @param testDTO 测试表DTO类
* @return 结果
*/
@Override
public boolean updateTest(TestDTO testDTO) {
TestEntity testInfoEntity = new TestEntity();
BeanUtils.copyProperties(testDTO, testInfoEntity);
return this.updateById(testInfoEntity);
}
/**
* 详情测试表
*
* @param id id值
* @return 结果
*/
@Override
public TestVO getTestById(Integer id) {
TestEntity testEntity = this.getById(id);
TestVO testVO = new TestVO();
BeanUtils.copyProperties(testEntity, testVO);
return testVO;
}
/**
* 删除测试表
*
* @param ids id数组
* @return 结果
*/
@Override
public boolean removeTestByIds(Integer[] ids) {
return this.removeByIds(Arrays.asList(ids));
}
}
添加mapper层
package com.onejson.ojmall.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.onejson.ojmall.entity.TestEntity;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
/**
* 测试表
*
* @author 微信公众号 onejson
* @date 2023-08-11 11:24:47
*/
@Mapper
public interface TestMapper extends BaseMapper<TestEntity> {
/**
* 查询测试表列表
*
* @param testEntity 测试表Entity类
* @return list列表
*/
List<TestEntity> selectTestList(TestEntity testEntity);
/**
* 统计测试表个数
*
* @param testEntity 测试表Entity类
* @return 符合条件的记录个数
*/
Integer countTest(TestEntity testEntity);
}
mapper层对应的sql
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.onejson.ojmall.mapper.TestMapper">
<resultMap type="com.onejson.ojmall.entity.TestEntity" id="testMap">
<result property="id" column="id"/>
<result property="title" column="title"/>
resultMap>
<sql id="selectTest">
select *
from test
sql>
<sql id="whereTest">
<where>
<if test="id !=null and id !=''">AND id = #{id,jdbcType=VARCHAR}if>
<if test="title !=null and title !=''">AND title = #{title,jdbcType=VARCHAR}if>
where>
sql>
<select id="selectTestList" parameterType="com.onejson.ojmall.entity.TestEntity" resultMap="testMap">
<include refid="selectTest"/>
<include refid="whereTest"/>
select>
<select id="countTest" parameterType="com.onejson.ojmall.entity.TestEntity" resultType="java.lang.Integer">
SELECT count(*)
FROM (
<include refid="selectTest"/>
<include refid="whereTest"/>
) a
select>
mapper>
添加扫描注解,对应sql文件的目录
@MapperScan("com.onejson.ojmall.mapper")
