java 使用POI简单excel表格导出，通过浏览器直接下载

pom.xl依赖

<!--POI Excel表格导出依赖-->
<dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.17</version>
</dependency>

导出代码：

import com.api.ms.flower.action.dto.WithdrawMoneyDTO;
import com.api.ms.flower.action.exception.CommonExceptionStatus;
import com.api.ms.flower.action.log.Operations;
import com.api.ms.flower.action.service.RemitAccountService;
import com.api.ms.flower.action.vo.Result;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.xssf.usermodel.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.Size;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.URLEncoder;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;/*** @Description: Excel导出控制层* @author: hjk**/
@RestController
public class ExcelController {@Autowiredprivate RemitAccountService remitAccountService;/*** 文件下载：导出excel表* @param withdrawMoneyDTO 划账* @param size 每页显示数量* @param page 页数* @param sort 排序* @param request request* @param response response* @throws UnsupportedEncodingException*/@ApiOperation(value = " 导出店铺划账信息 - Excel导出（后台）", notes = "需要验证")@ApiImplicitParams({@ApiImplicitParam(paramType = "query", name = "shop_name", value = "店铺名称", dataType = "String", required = false)})@Operations(value = "导出店铺划账信息 - Excel导出（后台）")@GetMapping(value = "/backstage/exportExcel")public void exportExcelShop(WithdrawMoneyDTO withdrawMoneyDTO,@RequestParam(name = "size", required = false, defaultValue = "") @Size(min = 15, max = 20) Integer size,@RequestParam(name = "page", required = false, defaultValue = "0") @Size(min = 0) Integer page,@RequestParam(name = "sort", required = false, defaultValue = "") @NotBlank String sort,HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException {List<WithdrawMoneyDTO> list = remitAccountService.listShopRemitAccountBackExcel(withdrawMoneyDTO, page, size, sort, request);if (list.isEmpty()){return;}//二、 数据转成excelrequest.setCharacterEncoding("UTF-8");response.setCharacterEncoding("UTF-8");response.setContentType("application/x-download");String fileName = "店铺划账信息.xlsx";fileName = URLEncoder.encode(fileName, "UTF-8");response.addHeader("Content-Disposition", "attachment;filename=" + fileName);// 第一步：定义一个新的工作簿XSSFWorkbook wb = new XSSFWorkbook();// 第二步：创建一个Sheet页XSSFSheet sheet = wb.createSheet("店铺划账信息");//设置行高sheet.setDefaultRowHeight((short) (2 * 256));//设置列宽sheet.setColumnWidth(0, 3000);sheet.setColumnWidth(1,5500);sheet.setColumnWidth(2,5500);sheet.setColumnWidth(3,5500);sheet.setColumnWidth(4,5500);sheet.setColumnWidth(5,5500);sheet.setColumnWidth(6,5500);sheet.setColumnWidth(7,5500);sheet.setColumnWidth(11,3000);sheet.setColumnWidth(12,3000);sheet.setColumnWidth(13,3000);XSSFFont font = wb.createFont();font.setFontName("宋体");font.setFontHeightInPoints((short) 16);XSSFRow row = sheet.createRow(0);XSSFCell cell = row.createCell(0);cell.setCellValue("序号 ");cell = row.createCell(1);cell.setCellValue("店铺名称 ");cell = row.createCell(2);cell.setCellValue("店铺编号");cell = row.createCell(3);cell.setCellValue("用户账号");cell = row.createCell(4);cell.setCellValue("持卡人");cell = row.createCell(5);cell.setCellValue("银行名称");cell = row.createCell(6);cell.setCellValue("银行卡号");cell = row.createCell(7);cell.setCellValue("订单总金额 ");cell = row.createCell(8);cell.setCellValue("已划账金额 ");cell = row.createCell(9);cell.setCellValue("未划账金额 ");XSSFRow rows;XSSFCell cells;for (int i = 0; i < list.size(); i++) {// 第三步：在这个sheet页里创建一行rows = sheet.createRow(i+1);// 第四步：在该行创建一个单元格cells = rows.createCell(0);// 第五步：在该单元格里设置值cells.setCellValue(list.get(i).getNum().toString());cells = rows.createCell(1);cells.setCellValue(list.get(i).getShop_name());cells = rows.createCell(2);cells.setCellValue(list.get(i).getShop_id().toString());cells = rows.createCell(3);cells.setCellValue(list.get(i).getUser_id());cells = rows.createCell(4);cells.setCellValue(list.get(i).getCardholder());cells = rows.createCell(5);cells.setCellValue(list.get(i).getBank_name());cells = rows.createCell(6);cells.setCellValue(list.get(i).getBank_card_number());cells = rows.createCell(7);cells.setCellValue(list.get(i).getTotal_money().toString());cells = rows.createCell(8);cells.setCellValue(list.get(i).getAlready_withdraw_money().toString());cells = rows.createCell(9);cells.setCellValue(list.get(i).getWait_withdraw_money().toString());}try {OutputStream out = response.getOutputStream();wb.write(out);out.close();wb.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

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