MyBatis-plus配置和测试微服务基本CRUD

我会带着你远行 2021-07-25 02:36 400阅读 0赞

# 一 整合MyBatis-Plus #

1 导入依赖

<dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.2.0</version>
    </dependency>

2 配置

2.1 配置数据源

a 导入数据库的驱动。

<dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.17</version>
    </dependency>

版本对应关系：[https://dev.mysql.com/doc/connector-j/8.0/en/connector-j-versions.html][https_dev.mysql.com_doc_connector-j_8.0_en_connector-j-versions.html]

![20201015203455354.png][]

b 在application.yml配置数据源相关信息

spring:
      datasource:
        username: root
        password: root
        url: jdbc:mysql://192.168.0.110:3306/gulimall_pms
        driver-class-name: com.mysql.jdbc.Driver

2.2 配置MyBatis-Plus

a 使用@MapperScan、

@MapperScan("com.atguigu.gulimall.product.dao")
    @SpringBootApplication
    public class GulimallProductApplication {
        public static void main(String[] args) {
            SpringApplication.run(GulimallProductApplication.class, args);
        }
    }

b 告诉MyBatis-Plus，sql映射文件位置，以及主键自增策略

mybatis-plus:
      mapper-locations: classpath:/mapper/**/*.xml
      global-config:
        db-config:
          id-type: auto
          logic-delete-value: 1
          logic-not-delete-value: 0

# 二 单元测试 #

1 测试新增

@Slf4j
    @RunWith(SpringRunner.class)
    @SpringBootTest
    public class GulimallProductApplicationTests {
        @Autowired
        BrandService brandService;
    
        @Test
        public void contextLoads() {
    
            BrandEntity brandEntity = new BrandEntity();
            brandEntity.setName("华为");
            brandService.save(brandEntity);
            System.out.println("保存成功....");
        }
    }

2 测试结果

![20201015203627978.png][]

3 测试修改

@Slf4j
    @RunWith(SpringRunner.class)
    @SpringBootTest
    public class GulimallProductApplicationTests {
        @Autowired
        BrandService brandService;
    
        @Test
        public void contextLoads() {
            BrandEntity brandEntity = new BrandEntity();
            brandEntity.setBrandId(1L);
            brandEntity.setDescript("华为");
            brandService.updateById(brandEntity);
        }
    }

4 测试结果

![20201015203704826.png][]

5 测试查询

@Slf4j
    @RunWith(SpringRunner.class)
    @SpringBootTest
    public class GulimallProductApplicationTests {
        @Autowired
        BrandService brandService;
    
        @Test
        public void contextLoads() {
    
            List<BrandEntity> list = brandService.list(new QueryWrapper<BrandEntity>().eq("brand_id", 1L));
            list.forEach((item) -> {
                System.out.println(item);
            });
        }
    }

6 测试结果

BrandEntity(brandId=1, name=华为, logo=null, descript=华为, showStatus=null, firstLetter=null, sort=null)

[https_dev.mysql.com_doc_connector-j_8.0_en_connector-j-versions.html]: https://dev.mysql.com/doc/connector-j/8.0/en/connector-j-versions.html
[20201015203455354.png]: /images/20210724/f92f1d30b6414c57a66cadc606ab4ab8.png
[20201015203627978.png]: /images/20210724/82b6e962e7e84fedad4b1b9d5c33b21f.png
[20201015203704826.png]: /images/20210724/c9cf4082d9f047f1831047c64f2fb301.png