Excel导出
一、设定查询条件
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注意：无法通过Ajax下载
-
jsp代码
<form class="col-sm-2" action="/manage/order/download" method="post" onsubmit="checkForm()"> <input type="submit" class="btn btn-success btn-sm " value="Excel导出"> <input id="mainorderNum1" name="mainorderNum" value="" style="display: none"></input> <input id="phone1" name="phone" value="" style="display: none"></input> <input id="deliveryState1" name="deliveryState" value="" style="display: none"></input> <input id="orderType1" name="orderType" value="" style="display: none"></input> <input id="orderState1" name="orderState" value="" style="display: none"></input> <input id="startTime1" name="startTime" value="" style="display: none"></input> <input id="endTime1" name="endTime" value="" style="display: none"></input> <input id="goodsId1" name="goodsId" value="" style="display: none"></input> </form> -
js代码
二、数据库中查询相应的数据
- 注意
- 代码
/**
* 下载文件
*
* @param
* @return
*/
@RequestMapping(value = "download", method = RequestMethod.POST)
public void downloadExp(HttpServletRequest request, HttpServletResponse response) {
// 判断文件是否为空
String flag = "02";//上传标志
int resmsg = 0;
DdOrderVo ddOrderVo = new DdOrderVo();
//获取查询参数
String mainorderNum = request.getParameter("mainorderNum");
String phone = request.getParameter("phone");
String deliveryState = request.getParameter("deliveryState");
String orderType = request.getParameter("orderType");
String orderState = request.getParameter("orderState");
String startTime = request.getParameter("startTime");
String endTime = request.getParameter("endTime");
String goodsId = request.getParameter("goodsId");
try {
if (mainorderNum != null && mainorderNum != "") {
ddOrderVo.setMainorderNum(Long.parseLong(mainorderNum));
}
ddOrderVo.setPhone(phone);
if (orderState != null && orderState != "") {
ddOrderVo.setOrderState(Integer.parseInt(orderState));
}
if (goodsId != null && goodsId != "") {
ddOrderVo.setGoodsId(Long.parseLong(goodsId));
}
if (orderType != null && orderType != "") {
ddOrderVo.setOrderType(Integer.parseInt(orderType));
}
if (deliveryState != null && deliveryState != "") {
ddOrderVo.setDeliveryState(Integer.parseInt(deliveryState));
}
if (startTime != null && startTime != "") {
ddOrderVo.setStartTime(Timestamp.valueOf(startTime));
}
if (endTime != null && endTime != "") {
ddOrderVo.setEndTime(Timestamp.valueOf(endTime));
}
Page<DdOrderVo> page = new Page<>();
page.setPageSize(99999);
page.setPageNum(1);
Page<DdOrderVo> list = ddOrderService.findByPage(ddOrderVo, page);
List<ExcelSheetPO> excelSheets = new ArrayList<>();
ExcelSheetPO excelSheetPO = new ExcelSheetPO();
List<List<Object>> datalist = new ArrayList<>();
// List<String> firstline = new ArrayList<>();
String[] firstline = new String[7];
firstline[0] = "主订单号";//mainorderNum
firstline[1] = "买家姓名";//addressee
firstline[2] = "买家电话";//phone
firstline[3] = "买家地址";//province city district address
firstline[4] = "订单商品";//goodsName goodsNum
firstline[5] = "快递类型";//expressType
firstline[6] = "面单号";//slogisticCode
// datalist.add(firstline);
for (DdOrderVo d : list.getResults()) {
List<Object> line = new ArrayList<>();
line.add(0, d.getMainorderNum());//mainorderNum
line.add(1, d.getAddressee());//addressee
line.add(2, d.getPhone());//phone
line.add(3, d.getProvince() + d.getCity() + d.getDistrict() + d.getAddress());//province city district address
//获得订单商品
DdOrderGoodsVo ddOrderGoodsVo = new DdOrderGoodsVo();
ddOrderGoodsVo.setOrderNum(d.getOrderNum());
List<DdOrderGoodsVo> glist = ddOrderGoodsService.find(ddOrderGoodsVo);
String gString = "";
for (DdOrderGoodsVo g : glist) {
gString += g.getGoodsName() + "(" + g.getGoodsNum() + ")";
}
line.add(4, gString);//goodsName goodsNum
line.add(5, d.getExpressType());//expressType"快递类型"
line.add(6, d.getSlogisticCode());//slogisticCode"面单号"
datalist.add(line);
resmsg++;
}
excelSheetPO.setHeaders(firstline);
excelSheetPO.setTitle("订单列表");
excelSheetPO.setDataList(datalist);
String realPath = request.getRealPath("");
String filePath = realPath + "/excelOut.xls";
// String filePath = "C://Users/Administrator/Desktop/excelOut.xls";
excelSheets.add(excelSheetPO);
createWorkbookAtDisk(V2003, excelSheets, filePath);
try {
filePath = realPath;
String downloadName = "order.xls";
String fileName = "/excelOut.xls";
FileUtil.downloadFile(filePath, downloadName, fileName, request, response);
} catch (Exception e) {
e.printStackTrace();
}
flag = "01";//上传成功
} catch (Exception e) {
flag = "03";//上传出错
e.printStackTrace();
}
}
三、将数据写入Excel
- 注意
分别调用以下方法将查询到的数据写到excel中
excelSheetPO.setHeaders(firstline);
excelSheetPO.setTitle(“订单列表”);
excelSheetPO.setDataList(datalist); - 代码
List<ExcelSheetPO> excelSheets = new ArrayList<>();
ExcelSheetPO excelSheetPO = new ExcelSheetPO();
List<List<Object>> datalist = new ArrayList<>();
// List<String> firstline = new ArrayList<>();
String[] firstline = new String[7];
firstline[0] = "主订单号";//mainorderNum
firstline[1] = "买家姓名";//addressee
firstline[2] = "买家电话";//phone
firstline[3] = "买家地址";//province city district address
firstline[4] = "订单商品";//goodsName goodsNum
firstline[5] = "快递类型";//expressType
firstline[6] = "面单号";//slogisticCode
// datalist.add(firstline);
for (DdOrderVo d : list.getResults()) {
List<Object> line = new ArrayList<>();
line.add(0, d.getMainorderNum());//mainorderNum
line.add(1, d.getAddressee());//addressee
line.add(2, d.getPhone());//phone
line.add(3, d.getProvince() + d.getCity() + d.getDistrict() + d.getAddress());//province city district address
//获得订单商品
DdOrderGoodsVo ddOrderGoodsVo = new DdOrderGoodsVo();
ddOrderGoodsVo.setOrderNum(d.getOrderNum());
List<DdOrderGoodsVo> glist = ddOrderGoodsService.find(ddOrderGoodsVo);
String gString = "";
for (DdOrderGoodsVo g : glist) {
gString += g.getGoodsName() + "(" + g.getGoodsNum() + ")";
}
line.add(4, gString);//goodsName goodsNum
line.add(5, d.getExpressType());//expressType"快递类型"
line.add(6, d.getSlogisticCode());//slogisticCode"面单号"
datalist.add(line);
resmsg++;
}
excelSheetPO.setHeaders(firstline);
excelSheetPO.setTitle("订单列表");
excelSheetPO.setDataList(datalist);
String realPath = request.getRealPath("");
String filePath = realPath + "/excelOut.xls";
// String filePath = "C://Users/Administrator/Desktop/excelOut.xls";
excelSheets.add(excelSheetPO);
createWorkbookAtDisk(V2003, excelSheets, filePath);
try {
filePath = realPath;
String downloadName = "order.xls";
String fileName = "/excelOut.xls";
FileUtil.downloadFile(filePath, downloadName, fileName, request, response);
} catch (Exception e) {
e.printStackTrace();
}
- 代码
四、将Excel下载至本地
- 注意
- 代码
/**
* 下载文件，是向页面输出流，不返回流
* @param filePath 文件服务器存储目录
* @param downloadName 下载文件保存的文件名
* @param fileName 服务器存储文件名
* @param request
* @param response
*/
@SuppressWarnings("static-access")
public static void downloadFile(String filePath,String downloadName,String fileName,HttpServletRequest request,HttpServletResponse response) throws Exception{
fileName = new java.net.URLDecoder().decode(fileName, "utf-8");
downloadName = new java.net.URLDecoder().decode(downloadName, "utf-8");
String path = filePath+fileName;
response.setContentType("application/octet-stream;charset=UTF-8");
response.setHeader("Content-Disposition", "attachment;filename=" + new String((downloadName).getBytes("GBK"), "iso8859-1"));
try {
//以流的形式下载文件
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
- 代码