下载poi-3.6-20091214.jar。下载地址例如以下：
1.jsp
<button type="button" class="btn btn-mini" onClick="location.href='<%=basePath%>/bankcard/exportEffectThirdData?
begintime=${begintime}&endtime=${endtime}&page=1'">导出有效订单</button>
2.后台代码处理：
controller 处理：
@Get("exportReturnThirdData")
public void exportReturnThirdListData(Invocation inv,@Param("begintime") String startTime,
@Param("endtime") String endTime){
HttpServletResponse response = inv.getResponse();
// response.setContentType("application/xls");
response.setContentType("application/x-download");
response.reset();
response.setContentType("bin");
String header = "attachment;filename=returnThirdData.xls";
response.addHeader("Content-Disposition", header);
String[] heads = { "订单日期", "订单号", "商品名称", "商品属性", "渠道名称", "支付银行卡","支付账号", "成本价", "卖出价", "卖出收入", "发货日期", "外订单审核日期", "退货日期", "取消日期" };
List<FenqiGoodsOrder> returnOrders = fenqiGoodsOrderListService
.exportReturnThirdList(startTime, endTime);
String path = "";
OrderDetailExportExeclUtil.exeportListData(heads, returnOrders,response);
}
导出到execl处理逻辑：
public static void exeportListData(String[] heads,List<FenqiGoodsOrder> returnOrders,HttpServletResponse response){
// 第一步。创建一个webbook，相应一个Excel文件
HSSFWorkbook wb = new HSSFWorkbook();
// 第二步。在webbook中加入一个sheet,相应Excel文件里的sheet
HSSFSheet sheet = wb.createSheet("第三方退货订单明细");
// 第三步，在sheet中加入表头第0行,注意老版本号poi对Excel的行数列数有限制short
HSSFRow row = sheet.createRow((int) 0);
// 第四步。创建单元格，并设置值表头 设置表头居中
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式
HSSFCell cell=null;
for(int h=0;h<heads.length;h++){
cell = row.createCell((short) h);
cell.setCellValue(heads[h]);
cell.setCellStyle(style);
}
// 第五步，写入实体数据 实际应用中这些数据从数据库得到，
for (int i = 0; i < returnOrders.size(); i++)
{
row = sheet.createRow((int) i + 1);
FenqiGoodsOrder goodsOrder = (FenqiGoodsOrder) returnOrders.get(i);
// 第四步，创建单元格，并设置值
row.createCell((short) 0).setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(goodsOrder.getCreateTime()));
row.createCell((short) 1).setCellValue(goodsOrder.getOrderNo());
row.createCell((short) 2).setCellValue(goodsOrder.getGoodName());
row.createCell((short) 3).setCellValue(goodsOrder.getGoodType());
row.createCell((short) 4).setCellValue(goodsOrder.getChannelName());
row.createCell((short) 5).setCellValue(goodsOrder.getCardNo());
row.createCell((short) 6).setCellValue(goodsOrder.getAccountNo());
row.createCell((short) 7).setCellValue(goodsOrder.getPurchasePrice());//成本价
row.createCell((short) 8).setCellValue(goodsOrder.getSellPrice());//卖出价
row.createCell((short) 9).setCellValue(goodsOrder.getSellEarning());//卖出收入
if(goodsOrder.getDeliveryTime() !=null && !goodsOrder.getDeliveryTime().equals("")){
row.createCell((short) 10).setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(goodsOrder.getDeliveryTime()));
}
if(goodsOrder.getAuditTime() !=null && !goodsOrder.getAuditTime().equals("")){
row.createCell((short) 11).setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(goodsOrder.getAuditTime()));
}
if(goodsOrder.getReturnTime() !=null && !goodsOrder.getReturnTime().equals("")){
row.createCell((short) 12).setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(goodsOrder.getReturnTime()));
}
if(goodsOrder.getCancelDate() !=null && !goodsOrder.getCancelDate().equals("")){
row.createCell((short) 13).setCellValue(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(goodsOrder.getCancelDate()));
}
}
// 第六步，将文件存到指定位置
try
{
wb.write(response.getOutputStream());
}
catch (Exception e)
{
e.printStackTrace();
}
}
