springboot整合mybatis-plus

导入依赖

<!--        mp-->
<dependency>
   <groupId>com.baomidou</groupId>
   <artifactId>mybatis-plus</artifactId>
   <version>3.4.2</version>
</dependency>

service层
Type是自定义的实体类

public interface TypeService extends IService<Type> {

}

serviceImpl层
TypeMapper是dao层写的，Type是自定义的实体类

@Service
public class TypeServiceImpl extends ServiceImpl<TypeMapper, Type> implements TypeService {

    
}

dao层
Type是自定义的实体类

public interface TypeMapper extends BaseMapper<Type> {
    
}

web层
如下图表示使用成功：