Export excel, generate multiple sheet pages, and name them

demand ：

Export list data for analysis , And according to different dimensions, it is displayed in different sheet in

because hutool Provided sheet Ambiguous methods multiple sheet But the data is only in one page, so you can package one by yourself utils

hutool:Hutool Reference documents

import cn.hutool.core.date.DateUtil;
import cn.hutool.core.io.IoUtil;
import cn.hutool.poi.excel.ExcelUtil;
import cn.hutool.poi.excel.ExcelWriter;
import com.shands.mod.quality.service.v2.SheetDTO;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

/**
 * @ClassName HuExcelUtils
 * @Description TODO
 * @Author feng
 * @Date 2022/6/1 15:32
 * @Version 1.0
 */
public class HuExcelUtils {

  /**
   *  Export multiple  Sheet  page 
   *
   * @param response
   * @param sheetList  Page data 
   * @param fileName   file name 
   */
  public static void exportExcel(HttpServletResponse response, List<SheetDTO> sheetList,
      String fileName) {
    ExcelWriter bigWriter = ExcelUtil.getBigWriter();
    //  Rename... First Sheet The name of , Otherwise, there will be one more by default Sheet1 Page of 
    bigWriter.renameSheet(0, sheetList.get(0).getSheetName());
    for (SheetDTO sheet : sheetList) {
      //  Specify what to write  Sheet  page 
      bigWriter.setSheet(sheet.getSheetName());
      Integer[] columnWidth = sheet.getColumnWidth();
      if (columnWidth == null || columnWidth.length != sheet.getFieldAndAlias().size()) {
        //  Set the default width 
        for (int i = 0; i < sheet.getFieldAndAlias().size(); i++) {
          bigWriter.setColumnWidth(i, 25);
        }
      } else {
        //  Set custom width 
        for (int i = 0; i < columnWidth.length; i++) {
          bigWriter.setColumnWidth(i, columnWidth[i]);
        }
      }
      //  Set fields and aliases 
      bigWriter.setHeaderAlias(sheet.getFieldAndAlias());
      //  Set to export only fields with aliases 
      bigWriter.setOnlyAlias(true);
      //  Set the default row height 
      bigWriter.setDefaultRowHeight(18);
      //  Set freeze line 
      //bigWriter.setFreezePane(1);
      //  Write it all at once , Use the default style , Forced output title 
      bigWriter.write(sheet.getCollection(), true);
      //  Set all columns to automatic width , Do not consider merging cells 
//            bigWriter.autoSizeColumnAll();
    }

    ServletOutputStream out = null;
    try {
      //response by HttpServletResponse object 
      response.setContentType("application/vnd.ms-excel;charset=utf-8");
      response.setHeader("Content-Disposition",
          "attachment;filename=" +
              URLEncoder.encode(fileName + DateUtil.today() + ".xlsx", "UTF-8"));
      out = response.getOutputStream();
      bigWriter.flush(out, true);
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      //  close writer, Free memory 
      bigWriter.close();
    }
    // Remember to turn off the output here Servlet flow 
    IoUtil.close(out);
  }


}

Controller

  @PostMapping("/export")
  @ApiOperation(" export ")
  public ResultVO export(HttpServletResponse response,@RequestBody Map<String,Integer> map) {
    log.info(" The report ）- Request parameters ：{}", JSONObject.toJSONString(map));
    patrolReportService.exportBlocPreviewReport(response,map.get("checkId"));
    return ResultVO.success();
  }

sericeImpl

@Override
  public void export(HttpServletResponse response, Integer checkId) {
    
    List<PatrolTopicVo> patrolTopicVo = qtCheckDetailsMapper.selecteachTopic(checkId);
    AtomicInteger index = new AtomicInteger();
    List<SheetDTO> sheetList = new ArrayList<>(2);
    Integer size = 2;
    for (int a = 0; a < size; a++) {
      if (a == 0) {
        LinkedHashMap<String, String> map = new LinkedHashMap<>();
        //  Set to export only fields with aliases 
        map.put("id", " Serial number ");
        map.put("hotelCode", " Hotel code ");
        map.put("hotelName", " Hotel name ");
        map.put("cooperationName", " It belongs to the business department ");
        map.put("ownershipName", " Management style ");
        map.put("taskStartTime", " Mission time ");
        map.put("checkPeople", " Inspector ");
        map.put("passRate", " Inspection qualification rate ");
        map.put("totalScore", " Report score ");

        SheetDTO sheet = new SheetDTO();
        sheet.setFieldAndAlias(map);
        sheet.setCollection(patrolTopicVo);
        sheet.setSheetName(" Overall situation ");
        sheetList.add(sheet);
        index.getAndIncrement();
      }

      if (a == 1) {
        LinkedHashMap<String, String> map = new LinkedHashMap<>();
        //  Set to export only fields with aliases 
        map.put("id", " Serial number ");
        map.put("departmentName", " department ");
        map.put("dimensionName", " dimension ");
        map.put("areaName", " Area ");
        map.put("projectName", " subject ");
        map.put("className", " classification ");
        map.put("qualifiedSize", " Number of qualified questions ");
        map.put("failedSize", " Number of unqualified questions ");
        map.put("notApplication", " Number of inapplicable topics ");
        map.put("passRate", " Pass rate ");

        SheetDTO sheet = new SheetDTO();
        sheet.setFieldAndAlias(map);
        sheet.setCollection(patrolTopicVo);
        sheet.setSheetName(" Item details ");
        sheetList.add(sheet);
        index.getAndIncrement();
      }


    }

    try {
      HuExcelUtils.exportExcel(response, sheetList, " Detail style ");
    } catch (Exception e) {
      e.printStackTrace();
    }

  }