SSM整合dubbo 进行分页查询

public interface ActEntityMapper {
    int deleteByPrimaryKey(String actId);

    int insert(ActEntity record);

    int insertSelective(ActEntity record);

    ActEntity selectByPrimaryKey(String actId);

    int updateByPrimaryKeySelective(ActEntity record);

    int updateByPrimaryKey(ActEntity record);
    // 测试查询
    ActEntity selectOneById(String actId) ;

    /**
     *
     * @param size 查询数量
     * @param from 偏移量
     * @return
     */
    List<ActEntity> selectAll(@Param("size") int size, @Param("from") int from) ;

    // 查询总记录数
    Integer selectListTotal();
}

 <!--测试，分页查询所有信息-->
  <select id="selectAll" resultMap="BaseResultMap">
    select
    <include refid="Base_Column_List"/>
    from hx_act
    limit #{from},#{size}
  </select>
  <!--查询表中的总记录数-->
  <select id="selectListTotal" resultType="java.lang.Integer">
    select
    count(*)
    from hx_act
  </select>
  <!--测试查询-->
  <select id="selectOneById" resultMap="BaseResultMap" parameterType="java.lang.String">
    select
      act_id,
      act_name,
      act_desc
    from hx_act
    where act_id = #{actId}
  </select>

@Api("查询h_act所有的信息")
public class SelectAllReq extends BaseListReq {
}

@Data
@Api("查询hx_act表中的所有信息")
public class SelectAllResp extends ResponseEntity {
    @ApiModelProperty("返回的数据")
    private List<ActBean> list ;
    @ApiModelProperty("总记录数")
    private int total ;
    public SelectAllResp(){
        super(SUCCESS);
    }

    public SelectAllResp(String errCode) {
        super(errCode);
    }
}

public class ActBean extends BaseEntity {
    private String actId;

    private String actName;

    private String actDesc;

    private Integer actType;

    private Integer actModel;

    private Date startTime;

    private Date endTime;

    private String repeatType;

    private Integer status;

    private String shareContext;

    private String extInfo;

    private String joinUrl;

    private Date createTime;
}

@Api(value = "杨连军测试service",produces = "application/json", description = "杨连军测试service")
public interface YangTestServiceI {
    @ApiOperation("根据actId查询这条记录")
    YangTestResp getActInfoById (String actId) ;
    @ApiOperation("分页查询所有记录")
    SelectAllResp getListInfo (SelectAllReq selectAllReq) ;
}

  @ApiOperation("传入偏移量和记录数，分页查询所有记录")
    @Override
    public SelectAllResp getListInfo(SelectAllReq selectAllReq) {
        SelectAllResp selectAllResp  = new SelectAllResp() ;
        List<ActBean> beanList = new ArrayList<>() ;
        Integer total = actEntityMapper.selectListTotal() ;
        System.out.println("总记录数:"+total);
        if (null == total||total==0){
            // 没有信息
            selectAllResp.setErrCode(ErrorCodeConst.DATA_NOT_EXISTED);
            return selectAllResp ;
        }
        // 调用dao，获得返回的记录
        List<ActEntity> list = actEntityMapper.selectAll(selectAllReq.getSize(),selectAllReq.getFrom());

        // 转换类型
        beanList = converUserList(list) ;
        selectAllResp.setList(beanList);
        selectAllResp.setTotal(total);
        return selectAllResp ;
    }


    /**
     * @desc 不同泛型List之间的转换
     * @param list
     * @return
     */
    public List<ActBean> converUserList(List<ActEntity> list){
        List<ActBean> beanList = new ArrayList<>() ;
        if (Lists.isEmpty(list)){ // 如果传入的是空，直接返回空的List<ActBean>
            return beanList ;
        }
        for (ActEntity actEntity : list){ // 便利
            ActBean actBean = new ActBean() ;
            // 对象的复制
            BeanUtils.copyProperties(actEntity,actBean);
            beanList.add(actBean) ;

        }
        return beanList ;
    }

    // 查询所有的act信息
    @RequestMapping("/getListActInfo")
    @ResponseBody
    public void getListActInfo (HttpServletRequest request, HttpServletResponse response,SelectAllReq selectAllReq){
        System.out.println("传入参数："+selectAllReq.getSize()); ;
        SelectAllResp selectAllResp = yangTestServiceI.getListInfo(selectAllReq) ;
        System.out.println("返回的状态码:"+selectAllResp.getErrCode());
        resultString(selectAllResp.toJsonStr(),response,false);
    }