二 Java之POI导出Excel：多个sheet( 二 ) _生活百科

2.ExcelSheet

查看代码 package com.***.excel;import lombok.Data;import java.util.List;/** * @description: 导出多个sheet表 * @author: *** * @date: 2022/9/15 */@Datapublic 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; }}

三、相关业务代码1.service层
/*** 导出开票及运单信息*/ExportInvoiceAndBillVo exportInvoiceAndBillInfo(InvoiceReviewListDto dto);2.impl实现类
实现类里的代码，需要各位根据自己的业务场景进行改动，无非就是将需要导出的数据先查出来，带入模板中，调用工具类的方法导出。

查看代码 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 */@Datapublic class ExportInvoiceAndBillVo implements Serializable { /*** 开票信息*/ private List<String[]> invoiceList; /*** 运单信息*/ private List<String[]> billList;}

查看代码 @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; }

3.controller层
controller层的代码需要注意的是：
1.因为导出Excel一般都是通过浏览器进行下载的，所以入参中需要加入HttpServletResponse
2.调用封装的工具类ExportSheetUtil中的exportManySheetExcel方法就可以了
3.表头和表名需要各位根据自身的业务场景修改哈

查看代码 /** * 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); }