4dkankan-center-manage/src/main/java/com/fdkankan/manage/service/impl/DownloadOrderServiceImpl.java

package com.fdkankan.manage.service.impl;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.fdkankan.manage.common.PageInfo;
import com.fdkankan.manage.common.CacheUtil;
import com.fdkankan.manage.entity.Camera;
import com.fdkankan.manage.entity.DownloadOrder;
import com.fdkankan.manage.entity.ScenePlus;
import com.fdkankan.manage.entity.ScenePro;
import com.fdkankan.manage.mapper.IDownloadOrderMapper;
import com.fdkankan.manage.service.*;
import com.fdkankan.manage.vo.request.OrderParam;
import com.fdkankan.manage.vo.response.DownOrderVo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * <p>
 * 下载次数订单表 服务实现类
 * </p>
 *
 * @author 
 * @since 2022-05-31
 */
@Service
public class DownloadOrderServiceImpl extends ServiceImpl<IDownloadOrderMapper, DownloadOrder> implements IDownloadOrderService {

    @Autowired
    IExcelService excelService;

    @Autowired
    ISceneProService sceneProService;
    @Autowired
    IScenePlusService scenePlusService;
    @Autowired
    ICameraService cameraService;

    @Override
    public PageInfo pageList(OrderParam param) {
        CacheUtil.orderParam = param;
        return PageInfo.PageInfo(this.pageListByParam(param));
    }

    @Override
    public Page<DownOrderVo> pageListByParam(OrderParam orderParam) {
        Page<DownOrderVo> page = this.getBaseMapper().pageList(new Page<>(orderParam.getPageNum(), orderParam.getPageSize()), orderParam);
        Set<String> numList = page.getRecords().stream().map(DownOrderVo::getSceneNum).collect(Collectors.toSet());
        HashMap<String,String> snCodeMap = sceneProService.getSnCodeByNumList(numList);

        for (DownOrderVo record : page.getRecords()) {
            if(StringUtils.isNotBlank(record.getSceneNum())){
                record.setSnCode(snCodeMap.get(record.getSceneNum()));
            }
            record.setCreateTime(record.getTradeTime());
        }
        return page;
    }

    @Override
    public void export(HttpServletRequest req, HttpServletResponse resp) {
        OrderParam orderParam = CacheUtil.orderParam;
        orderParam.setPageNum(1);
        orderParam.setPageSize(5000);
        Page<DownOrderVo> page = this.pageListByParam(orderParam);

        ExcelWriter excelWriter = null;
        try {
            excelWriter = EasyExcel.write(resp.getOutputStream(),DownOrderVo.class).build();
            excelService.commonExport(req,resp,"下载订单",page.getRecords(),excelWriter);
            while (page.hasNext()){
                orderParam.setPageNum(orderParam.getPageNum()+1);
                page = this.pageListByParam(orderParam);
                if(page.getRecords().size() >0){
                    excelService.commonExport(req,resp,"下载订单",page.getRecords(),excelWriter);
                }
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            if(excelWriter !=null){
                excelWriter.finish();
            }
        }
    }
}