pom文件引入mybatis plus依赖

		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-boot-starter</artifactId>
			<version>3.3.2</version>
		</dependency>

java实体类（tableName注解将实体类和数据库表映射）

 */
@Data
@ToString
@TableName( value ="t_public_account_article" )
public class InfoEntity {
    private String aid;
    private String appmsgid;
    private String cover;
    private String digest;
    private String itemidx;
    private String link;
    private String title;
    @SerializedName("create_time")
    private Long createTime;
    @SerializedName("update_time")
    private Long updateTime;

}

DAO层mapper接口

@Mapper
@Component
public interface InfoDao extends BaseMapper<InfoEntity> {

    void insertUnique(InfoEntity entity);

    void insertList(@Param("list") List<InfoEntity> list);
}

SERVICE层service服务

@Service
public class IndexService {


    @Autowired
    private InfoDao infoDao;

    public List<InfoEntity> list(){
        return infoDao.selectList(null);
    }



}