Springcloud学习笔记33--文件存储信息查询功能(使用mybatis xml 写原生sql)

2021/10/13 19:14:41

编程Tag： XML param public springcloud -- pageSize pageNo queryOssList ossListDto

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1.controller

利用OssListDto实体类接收多个参数，同时利用@RequestParam参数接收单个参数

@Api(tags="bs_file_store")
@RestController
@RequestMapping("/test/bsFileStore")
@Slf4j
public class BsFileStoreController extends JeecgController<BsFileStore, IBsFileStoreService> {
    @Autowired
    private IBsFileStoreService bsFileStoreService;
    
    /**
     * 分页列表查询
     *
     * @param ossListDto
     * @param pageNo
     * @param pageSize
     * @param req
     * @return
     */
    @AutoLog(value = "bs_file_store-分页列表查询")
    @ApiOperation(value="bs_file_store-分页列表查询", notes="bs_file_store-分页列表查询")
    @GetMapping(value = "/list")
    public Result<?> queryOssList(OssListDto ossListDto,
                                   @RequestParam(name="pageNo", defaultValue="1") Integer pageNo,
                                   @RequestParam(name="pageSize", defaultValue="10") Integer pageSize,
                                   HttpServletRequest req) {
        log.info(pageNo.toString());
        log.info(pageSize.toString());
        return Result.OK(bsFileStoreService.queryOssList(ossListDto,pageNo,pageSize));
    }
}

2.service接口及其实现类

(1)service接口

public interface IBsFileStoreService extends IService<BsFileStore> {

    /**
     * 存储列表
     * @param ossListDto
     * @param pageNo
     * @param pageSize
     * @return
     */
    IPage<OssListDto> queryOssList(OssListDto ossListDto, Integer pageNo, Integer pageSize);


}

(2)实现类

@Service
@DS("multi-datasource1")
@Slf4j
public class BsFileStoreServiceImpl extends ServiceImpl<BsFileStoreMapper, BsFileStore> implements IBsFileStoreService {
    @Autowired
    private BsFileStoreMapper bsFileStoreMapper;

    @Override
    public IPage<OssListDto> queryOssList(OssListDto ossListDto, Integer pageNo, Integer pageSize) {
        Page<OssListDto> page=new Page<>(pageNo,pageSize);
        List<OssListDto> ossList=bsFileStoreMapper.queryOssList(ossListDto);
        log.info("hell0");
        return null;
    }
}

3.mapper层接口与mybatis xml中sql编写

public interface BsFileStoreMapper extends BaseMapper<BsFileStore> {

    /**
     * oss存储列表
     * @param ossListDto
     * @return
     */
    List<OssListDto> queryOssList(OssListDto ossListDto);
}

对应的xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.jeecg.modules.mapper.BsFileStoreMapper">
    
    <!--多表关联查询，推荐直接用传统 mybatis xml-->
    <select id="queryOssList" resultType="org.jeecg.modules.dto.OssListDto">
        select id,os_name as osName,IFNULL(NULL,1) storeType,endpoint_first as storePath
        from pm_os_info
        <where>
            <if test="osName!=null">
                os_name=#{osName}
            </if>
        </where>
    </select>


</mapper>

#{osName}是拿取BsFileStoreMapper接口中queryOssList方法所传递的实体类OssListDto中的osName成员变量,将其作为where条件的参数

id="queryOssList"