机场公安前后端联调内容

fangyuan

2023-01-16 ecad870fe1896c8c3e48506d50bb5818974253bf

 ycl-platform/src/main/java/com/ycl/controller/NewsColumnInformationController.java

@@ -3,13 +3,17 @@




import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.api.ApiController;

import com.baomidou.mybatisplus.extension.api.R;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.github.pagehelper.PageHelper;

import com.github.pagehelper.PageInfo;

import com.ycl.entity.NewsColumnInformation;

import com.ycl.entity.NewsInformation;

import com.ycl.service.NewsColumnInformationService;

import com.ycl.service.NewsInformationService;

import com.ycl.vo.depart.UmsDepartVO;

import io.swagger.annotations.Api;

import io.swagger.annotations.ApiOperation;

import org.springframework.beans.factory.annotation.Autowired;

@@ -18,7 +22,10 @@
import javax.annotation.Resource;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.stream.Collectors;

import java.util.stream.Stream;



/**

 * 栏目咨询中间表(NewsColumnInformation)表控制层

@@ -106,13 +113,39 @@
     * @return 资讯查询结果

     */

    @GetMapping("column/{id}")

    @ApiOperation(value = "按")

    public R selectInformationByColumnId(@PathVariable Serializable id) {

    @ApiOperation(value = "按栏目id查询讯息")

    public R selectInformationByColumnId(@PathVariable Serializable id ,@RequestParam(value = "pageNum", required = false,defaultValue = "1")Integer pageNum,@RequestParam(value = "pageSize", required = false,defaultValue = "10")Integer pageSize) {

        List<NewsColumnInformation> newsColumnInformationList = newsColumnInformationService.list(new QueryWrapper<NewsColumnInformation>().eq("column_id", id));

        List<NewsInformation> resultList=new ArrayList<>();

        IPage<NewsInformation> page = new Page<>(pageNum, pageSize);

        for (NewsColumnInformation newsColumnInformation:newsColumnInformationList){

            resultList.add(newsInformationService.selectInformationById(newsColumnInformation.getInformationId()));

        }

        return success(resultList);

    }}

        page.setTotal(resultList.size());

        if (pageSize>resultList.size()){

            page.setRecords(resultList);

        }

        else {

            List<List<NewsInformation>> lists = split8(resultList, pageSize);

            page.setRecords(lists.get(pageNum-1));

        }

        return success(page);

    }



    public static <T> List<List<T>> split8(List<T> list,int splitSize){

        // 每份个数 splitSize

        if( null == list || list.isEmpty() ){ return Collections.emptyList(); }

        // 列表元素数，总份数

        int size = list.size(), cnt = (size + splitSize - 1 ) / splitSize;

        return Stream

                .iterate(0,i -> i+1 )

                .limit(cnt)

                .parallel()

                .map(i -> list.parallelStream().skip( i * splitSize ).limit(splitSize).collect(Collectors.toList()))

                .filter(a -> !a.isEmpty())

                .collect(Collectors.toList());

    }





}