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JAVA导出EXCEL并下载

更新时间:2022-03-26 16:06:32

JAVA导出EXCEL并下载

一 ,流程大致如下

1.JSP页面点击按钮

JAVA导出EXCEL并下载

2.点击导出excel按钮

JAVA导出EXCEL并下载

3.点击确定按钮

(1)在谷歌浏览器中会直接下载

JAVA导出EXCEL并下载

(2)在ie浏览器会提示保存路径

JAVA导出EXCEL并下载

4.最后下载保存到本地,打开Excel表格,效果如下。

JAVA导出EXCEL并下载

二,下面来看具体代码

前端js代码
	function exportExcel() {
 		$.messager.confirm('确认', '确认把该搜索结果导出Excel表格 ?', function(r) {
			if (r) {
				var startTime = $('#startTime1').datetimebox('getValue');
				var endTime = $('#endTime1').datetimebox('getValue');
				var username = $("#username").val();
				var mphone = $("#mphone").val();
				var ordercode = $("#ordercode").val();
				var orderStatus = $("#select_value").val();
				$.messager.progress({
					title : '处理中',
					msg : '请稍后',
				});
				$.messager.progress('close');
				location.href="${ctx}/tradingManage/exportExcel?startTime="+startTime+"&endTime="+endTime+"&username="+username+"&mphone="+mphone+"&ordercode="+ordercode+"&orderStatus="+orderStatus;
			}
		}); 
	}

java代码

@ResponseBody
	@RequestMapping(value="exportExcel")
	public void exportExcel(HttpServletRequest request, HttpServletResponse resp) throws IOException
	{
		try
		{
			if (null == request || null == resp)
			{
				return;
			}
			List<VUserOrder> listContent = null;
			String startTime = request.getParameter("startTime");
			String endTime = request.getParameter("endTime");
			String userName = request.getParameter("username");
			String mphone = request.getParameter("mphone");
			String orderCode = request.getParameter("ordercode");
			String orderStatus = request.getParameter("orderStatus");
			Map<String, Object> searchParams = new HashMap<String, Object>();
			searchParams.put("LTE_type", OrderType.tx.getType());
			searchParams.put("GTE_userId", 0);
			if (null != startTime)
				searchParams.put("GTE_createTime", DateUtils.getFormatDate(startTime, "yyyy-MM-dd HH:mm:ss"));
			if (null != endTime)
				searchParams.put("LTE_createTime", DateUtils.getFormatDate(endTime, "yyyy-MM-dd HH:mm:ss"));
			if (null != userName)
				searchParams.put("EQ_userName", userName);
			if (null != mphone)
				searchParams.put("EQ_userMphone", mphone);
			if (null != orderCode)
				searchParams.put("EQ_orderCode", orderCode);
			if (null != orderStatus)
				searchParams.put("EQ_status", orderStatus);
			Specification<VUserOrder> spec = JpaQueryUtils.buildSpecification(VUserOrder.class, searchParams);
			listContent = userOrderService.findAll(spec);
			Map<Long, Map<String, String>> maps = authChsiService.getVUserOrderSchoolNameAndFacultyName(listContent);
			SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			if (null != listContent)
			{
				int listContentSize = listContent.size();
				for (int i = 0; i < listContentSize; i++)
				{
					if (null != listContent.get(i))
					{
						Map<String, String> map2 = maps.get(listContent.get(i).getId());
						listContent.get(i).setJyrq(formatter.format((listContent.get(i).getUpdateTime())));
						if (null != map2)
						{
							listContent.get(i).setSchoolName(map2.get("schoolName"));
							listContent.get(i).setFacultyName(map2.get("facultyName"));
						}
					}
				}
			}
			//生成Excel文件
			userOrderService.exportExcel(request, resp, listContent);
		}
		catch (ServiceException e)
		{
			logger.info("=====导出excel异常====");
		}
		catch (Exception e1)
		{
			logger.info("=====导出excel异常====");
		}
	}

上面的代码主要逻辑是查询出一个list对象,最后一步然后调用userOrderService中的exportExcel方法,可以直接忽视调用该方法前的查询代码,从controller直接调用以下方法。如下

(而我的业务逻辑是根据搜索条件查询到相应的list,然后把管理员想导出的数据导出Excel)


/**
	 * excel导出交易记录
	 * @param request
	 * @param resp
	 * @throws UnsupportedEncodingException
	 */
	public void exportExcel(HttpServletRequest request,HttpServletResponse resp,List<VUserOrder> listContent) throws UnsupportedEncodingException
	{
		HSSFWorkbook wb = new HSSFWorkbook();
		request.setCharacterEncoding("UTF-8");
		resp.setCharacterEncoding("UTF-8");
		resp.setContentType("application/x-download");

		String fileName = "交易记录.xls";
		fileName = URLEncoder.encode(fileName, "UTF-8");
		resp.addHeader("Content-Disposition", "attachment;filename=" + fileName);
		HSSFSheet sheet = wb.createSheet("会员交易记录");
		sheet.setDefaultRowHeight((short) (2 * 256));
		sheet.setColumnWidth(0, 50 * 160);
		HSSFFont font = wb.createFont();
		font.setFontName("宋体");
		font.setFontHeightInPoints((short) 16);
		HSSFRow row = sheet.createRow((int) 0);
		sheet.createRow((int) 1);
		sheet.createRow((int) 2);
		sheet.createRow((int) 3);
		sheet.createRow((int) 4);
		sheet.createRow((int) 5);
		sheet.createRow((int) 6);
		sheet.createRow((int) 7);
		sheet.createRow((int) 8);
		sheet.createRow((int) 9);
		sheet.createRow((int) 10);
		sheet.createRow((int) 11);
		HSSFCellStyle style = wb.createCellStyle();
		style.setAlignment(HSSFCellStyle.ALIGN_CENTER);

		HSSFCell cell = row.createCell(0);
		cell.setCellValue("编号 ");
		cell.setCellStyle(style);
		cell = row.createCell(1);
		cell.setCellValue("日期 ");
		cell.setCellStyle(style);
		cell = row.createCell(2);
		cell.setCellStyle(style);
		cell.setCellValue("订单号");
		cell = row.createCell(3);
		cell.setCellStyle(style);
		cell.setCellValue("会员姓名");
		cell = row.createCell(4);
		cell.setCellStyle(style);
		cell.setCellValue("会员手机号");
		cell = row.createCell(5);
		cell.setCellStyle(style);
		cell.setCellValue("学校 ");
		cell = row.createCell(6);
		cell.setCellStyle(style);
		cell.setCellValue("院系 ");
		cell = row.createCell(7);
		cell.setCellStyle(style);
		cell.setCellValue("交易日期 ");
		cell = row.createCell(8);
		cell.setCellStyle(style);
		cell.setCellValue("消费类型");
		cell = row.createCell(9);
		cell.setCellStyle(style);
		cell.setCellValue("产品名称");
		cell = row.createCell(10);
		cell.setCellStyle(style);
		cell.setCellValue("消费金额 ");
		cell = row.createCell(11);
		cell.setCellStyle(style);
		cell.setCellValue("状态");

		List<VUserOrder> vUserOrder = listContent;

		for (int i = 0; i < vUserOrder.size(); i++)
		{
			HSSFRow row1 = sheet.createRow((int) i + 1);
			VUserOrder vuserOrder = vUserOrder.get(i);
			row1.createCell(0).setCellValue(i + 1);
			row1.createCell(1).setCellValue(DateUtils.getFormatDateTime(vuserOrder.getCreateTime()));//日期
			row1.createCell(2).setCellValue(vuserOrder.getOrderCode());//订单号
			row1.createCell(3).setCellValue(vuserOrder.getUserName());//会员姓名
			row1.createCell(4).setCellValue(vuserOrder.getUserMphone());//会员手机号
			row1.createCell(5).setCellValue(vuserOrder.getSchoolName());//学校
			row1.createCell(6).setCellValue(vuserOrder.getFacultyName());//院系
			row1.createCell(7).setCellValue(vuserOrder.getJyrq());//交易日期
			int orderType = vuserOrder.getType();
			String type = "";
			if (orderType == OrderType.xx.getType())
			{
				type = "线下消费";
			}
			else if (orderType == OrderType.df.getType())
			{
				type = "网购代付";
			}
			else if (orderType == OrderType.tx.getType())
			{
				type = "用户提现";
			}
			else if (orderType == OrderType.qe.getType())
			{
				type = "全额还款";
			}
			else if (orderType == OrderType.fq.getType())
			{
				type = "分期还款";
			}
			row1.createCell(8).setCellValue(type);//消费类型
			row1.createCell(9).setCellValue(vuserOrder.getProductName());//产品名称
			row1.createCell(10).setCellValue(vuserOrder.getAmount().doubleValue());//消费金额
			row1.createCell(11).setCellValue(
					(vuserOrder.getStatus() == 1) ? "交易成功" : (vuserOrder.getStatus() == 2) ? "失败" : "处理中");//状态
		}
		try
		{
			OutputStream out = resp.getOutputStream();
			wb.write(out);
			out.close();
		}
		catch (ServiceException e)
		{
			logger.info("=====导出excel异常====");
		}
		catch (Exception e1)
		{
			logger.info("=====导出excel异常====");
		}
	}

所以代码结束。调用该方法直接传进list对象,剩下的自己稍微修改下list的属性就可以ok了。

需要注意的是这里的jsp中用 location.href 发送到controller。如果有不明白的可以一起交流。JAVA导出EXCEL并下载