网上很多文章，但是回显出问题，上传有两种格式，一种是异步，一种是同步，我用异步多文件上传时，异步的请求到后台会多次调用上传方法，就是有几个文件就调用几次，所以我用同步方式，一并处理，回调一次
前端页面
<head>
<meta name="viewport" content="width=device-width" />
<title>日订单导入</title>
<script src="~/Scripts/fileinput.js"></script>
<script src="~/Scripts/zh.js"></script>
<link href="~/Content/fileinput.css" rel="stylesheet" />
</head>
<body>
<div style="text-align:center">
<form>
<div class="modal-title">
<h4>请选择日订单文件</h4>
</div>
<div class="modal-body">
<input type="file" name="txt_file" id="txt_file" multiple class="file-loading" />
</div>
<button type="submit" class="btn btn-default">提交</button>
</form>
</div>
</body>
</html>
<script type="text/javascript">
$(function () {
var control = $("#txt_file");
var uploadrul = "/VW_Import/DayFileUpload";
control.fileinput({
language: 'zh', //设置语言
uploadUrl: uploadrul, //上传的地址
allowedFileExtensions: ['xls','xlsx'],//接收的文件后缀
showUpload: true, //显示批量上传按钮
showCaption: false,//是否显示标题
browseClass: "btn btn-primary", //按钮样式
dropZoneEnabled: true,//是否显示拖拽区域
uploadAsync: false, //默认异步上传
showRemove: true, //显示移除按钮
//showPreview: true, //是否显示预览
showCaption: false,//是否显示标题
maxFileCount: 100,
enctype: 'multipart/form-data',
validateInitialCount: true,
previewFileIcon: "<i class='glyphicon glyphicon-file'></i>",
msgFilesTooMany: "选择上传的文件数量({n}) 超过允许的最大数值{m}！",
});
//导入文件上传完成之后的事件
$("#txt_file").on("filebatchuploadsuccess", function (event, data, previewId, index) {
result = $.parseJSON(data.response);
if (result.success == true) {
alert("导入成功！");
}
else {
alert(result.errorMsg);
}
});
});
</script>
后台代码
public ActionResult DayFileUpload() { try { HttpFileCollection files = System.Web.HttpContext.Current.Request.Files; List<VW_DayParts> lst = new List<VW_DayParts>(); List<VW_DayPartsVersion> versionlst = new List<VW_DayPartsVersion>(); var checkList = dbVW_DayPartsVersion.Entities().ToList(); bool update = true; for (int j = 0; j < files.Count; j++) { HttpPostedFile PostedFile = files[j]; string fileName = PostedFile.FileName; //VW_DayPartsVersion s = checkList.Where(m => m.FileName.Contains(fileName)).FirstOrDefault(); if (checkList.Where(m => m.FileName.Contains(fileName)).FirstOrDefault() != null) { update = false; break; } string filePath = Server.MapPath("~/VW_Upload/DayOrder/" + fileName); PostedFile.SaveAs(filePath); IWorkbook workbook; //XSSFWorkbook hssfworkbook; string fileExt = Path.GetExtension(fileName).ToLower(); using (FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read)) { if (fileExt == ".xlsx") { workbook = new XSSFWorkbook(file); } else if (fileExt == ".xls") { workbook = new HSSFWorkbook(file); } else { workbook = null; } //workbook = new XSSFWorkbook(file); } NPOI.SS.UserModel.ISheet sheet = workbook.GetSheetAt(1); //列数 int cellCount = sheet.GetRow(0).LastCellNum; //int cellCount = sheet.GetRow(0).LastCellNum; UserLoginInfo loginInfo = aService.GetUserLoginInfo(); VW_DayPartsVersion dVersion = new VW_DayPartsVersion(); dVersion.FileName = fileName; dVersion.UpTime = DateTime.Now; dVersion.UserId = loginInfo.UserId; string[] tempName = fileName.Split(' '); dVersion.Factory = tempName[1].Substring(0, 4); versionlst.Add(dVersion); for (int i = 1; i <= sheet.LastRowNum; i++) { //int j = 0;//0 3 4 17 18 VW_DayParts item = new VW_DayParts(); IRow currentRow = sheet.GetRow(i);// i=1 从第二行开始 //物料号 if (!string.IsNullOrWhiteSpace(currentRow.GetCell(0).ToString())) { item.MATNR = currentRow.GetCell(0).ToString(); } //工厂代码 if (!string.IsNullOrWhiteSpace(currentRow.GetCell(3).ToString())) { item.Factory = currentRow.GetCell(3).ToString(); } //合同编号 if (!string.IsNullOrWhiteSpace(currentRow.GetCell(4).ToString())) { item.ContractNo = currentRow.GetCell(4).ToString(); } //交货时间 if (!string.IsNullOrWhiteSpace(currentRow.GetCell(17).ToString())) { item.DeliveryDate = Convert.ToDateTime(currentRow.GetCell(17).ToString()); } //计划数量 if (!string.IsNullOrWhiteSpace(currentRow.GetCell(18).ToString())) { item.Quantity = Convert.ToInt32(currentRow.GetCell(18).NumericCellValue); } item.FileName = fileName; item.UpTime = DateTime.Now; item.UserId = loginInfo.UserId; lst.Add(item); } } if(update) { dbVW_DayParts.BulkInsert(lst); dbVW_DayPartsVersion.Insert(versionlst); return Json(MsgCommon.respJsonSuccessMsg()); } else { return Json(MsgCommon.respJsonErrorMsg("文件名重复或文件已上传")); } } catch (DbEntityValidationException dbEx) { return Json(MsgCommon.respJsonErrorMsg(dbEx.ToString())); } }