<!--Excel工具-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>5.2.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>5.2.2</version>
<scope>compile</scope>
</dependency>

package com.***.excel;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.springframework.http.MediaType;
import javax.servlet.http.HttpServletResponse;
import java.net.URLEncoder;
import java.util.List;
/**
* @description: excel导出多个sheet工具类
* @author: ***
* @date: 2022/9/15
*/
public class ExportSheetUtil {
/**
* 拆解并导出多重Excel
*/
public static void exportManySheetExcel(String fileName, List<ExcelSheet> mysheets, HttpServletResponse response) {
//创建工作薄
HSSFWorkbook wb = new HSSFWorkbook();
//表头样式
HSSFCellStyle style = wb.createCellStyle();
// 垂直
style.setVerticalAlignment(VerticalAlignment.CENTER);
// 水平
style.setAlignment(HorizontalAlignment.CENTER);
//字体样式
HSSFFont fontStyle = wb.createFont();
fontStyle.setFontName("微软雅黑");
fontStyle.setFontHeightInPoints((short) 12);
style.setFont(fontStyle);
for (ExcelSheet excel : mysheets) {
//新建一个sheet
//获取该sheet名称
HSSFSheet sheet = wb.createSheet(excel.getFileName());
//获取sheet的标题名
String[] handers = excel.getHanders();
//第一个sheet的第一行为标题
HSSFRow rowFirst = sheet.createRow(0);
//写标题
for (int i = 0; i < handers.length; i++) {
//获取第一行的每个单元格
HSSFCell cell = rowFirst.createCell(i);
//往单元格里写数据
cell.setCellValue(handers[i]);
//加样式
cell.setCellStyle(style);
//设置每列的列宽
sheet.setColumnWidth(i, 4000);
}
//写数据集
List<String[]> dataset = excel.getDataset();
for (int i = 0; i < dataset.size(); i++) {
//获取该对象
String[] data = dataset.get(i);
//创建数据行
HSSFRow row = sheet.createRow(i + 1);
for (int j = 0; j < data.length; j++) {
//设置对应单元格的值
row.createCell(j).setCellValue(data[j]);
}
}
}
// 下载文件谷歌文件名会乱码,用IE
try {
response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName + ".xlsx", "utf-8"));
response.setHeader("Cache-Control", "No-cache");
response.flushBuffer();
wb.write(response.getOutputStream());
wb.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

package com.***.excel;
import lombok.Data;
import java.util.List;
/**
* @description: 导出多个sheet表
* @author: ***
* @date: 2022/9/15
*/
@Data
public class ExcelSheet {
/*** sheet的名称*/
private String fileName;
/*** sheet里的标题*/
private String[] handers;
/*** sheet里的数据集*/
private List<String[]> dataset;
public ExcelSheet(String fileName, String[] handers, List<String[]> dataset) {
this.fileName = fileName;
this.handers = handers;
this.dataset = dataset;
}
}

package com.***.vo.invoicereview;
import lombok.Data;
import java.io.Serializable;
import java.util.List;
/**
* @description: 导出开票和运单信息Vo
* @author: ***
* @date: 2022/9/19
*/
@Data
public class ExportInvoiceAndBillVo implements Serializable {
/*** 开票信息*/
private List<String[]> invoiceList;
/*** 运单信息*/
private List<String[]> billList;
}

    @Override
public ExportInvoiceAndBillVo exportInvoiceAndBillInfo(InvoiceReviewListDto dto) {
ExportInvoiceAndBillVo invoiceAndBill = new ExportInvoiceAndBillVo();
// 查询需要导出的开票信息
PageInfo<InvoiceReviewListVo> pageInfo = queryInvoiceReviewList(dto);
List<InvoiceReviewListVo> invoiceList = pageInfo.getList();
if (invoiceList.size() > 10000) {
throw new ServiceException("开票数据过多,请分批次导出");
}
// 查询需要导出的车运运单信息
List<Long> invoiceIdList = invoiceList.stream().map(InvoiceReviewListVo::getInvoiceId).collect(Collectors.toList());
List<ExportBillVo> billList = getBillInfo(invoiceIdList);
if (billList.size() > 10000) {
throw new ServiceException("运单数据过多,请分批次导出");
}
// 将表1 表2的数据 放入定义的对象Vo中
invoiceAndBill.setInvoiceList(getInvoiceDataList(invoiceList));
invoiceAndBill.setBillList(getBillDataList(billList));
return invoiceAndBill;
}

    /**
* 导出开票和运单信息
*/
@Log
@PostMapping("/exportInvoiceAndBillInfo")
public void exportInvoiceAndBillInfo(@RequestBody InvoiceReviewListDto dto, HttpServletResponse response) {
ExportInvoiceAndBillVo invoiceAndBillVo = invoiceFacadeService.exportInvoiceAndBillInfo(dto);
//设置sheet的表头与表名
String[] invoiceSheetHead = {"开票编号", "票号", "公司名称", "收票方名称", "结算类型", "纳税识别码", "收票联系人", "联系人电话", "运单总金额(元)", "含税总金额(元)", "开票状态", "提交开票时间", "运营审核时间", "运营审核人", "财务审核时间", "财务审核人", "开票完成时间", "冲销操作人", "冲销时间"};
String[] billSheetHead = {"开票编号", "运单号", "发货地", "收货地", "司机", "司机电话", "货物名称", "货物数量", "单位", "货物重量(吨)", "运单状态", "运单金额(元)", "含税金额(元)"};
ExcelSheet invoiceExcel = new ExcelSheet("开票信息", invoiceSheetHead, invoiceAndBillVo.getInvoiceList());
ExcelSheet billExcel = new ExcelSheet("运单信息", billSheetHead, invoiceAndBillVo.getBillList());
List<ExcelSheet> mysheet = new ArrayList<>();
mysheet.add(invoiceExcel);
mysheet.add(billExcel);
ExportSheetUtil.exportManySheetExcel("开票及运单信息", mysheet, response);
}