SpringBoot：集成通用Mapper

一：通用Mapper简介

• 通用Mapper就像是一个mybatis的辅助工具，能很好地帮我我们进行对数据库的操作，简化操作，并且通用Mapper中提供了很多通用的方法供我们选择.

二：项目构建

• 导包
  访问仓库地址查询版本：https://mvnrepository.com/

  <dependency>
            <groupId>tk.mybatisgroupId>
            <artifactId>mapper-spring-boot-starterartifactId>
            <version>选择合适的版本version>
   dependency>

• 实体类

@Entity
@Table(name = "person")
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Person {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    private String name;
}

• mapper类

public interface PersonMapper extends Mapper<Person> {
}

• 配置

spring:
  datasource:
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/demo
  //自动建表
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: true

@SpringBootApplication
@MapperScan(value = "com.lll.mybatis.mapper")
public class MybatisApplication {

    public static void main(String[] args) {
        SpringApplication.run(MybatisApplication.class, args);
    }

}

• 测试类

@RunWith(SpringRunner.class)
@SpringBootTest
public class TestControllerTest {

    @Autowired
    private PersonMapper personMapper;
    
    @Test
    public void test() {
        personMapper.insert(new Person(null,"茉莉"));
    }
}

三：通用Mapper的其他方法

• 通用Mapper文档：https://mapperhelper.github.io/docs/