使用jQuery Ajax将文件发送到C＃中的Web服务（asmx）

Question

我正在通过以下方法使用Web服务：

        $.ajax({
            type: 'POST',
            url: 'page.asmx/method',
            contentType: 'application/json; charset=utf-8',
            dataType: 'json',
            data: '{}'
        });

发送json字符串，它可以工作，但是如果我尝试使用FormData追加输入的内容并将其传递给数据值，我将得到500响应。我该怎么办？

Answer 1

您需要序列化数据…。

  var data = new FormData();

  var files = $("#YOURUPLOADCTRLID").get(0).files;

  // Add the uploaded image content to the form data collection
  if (files.length > 0) {
       data.append("UploadedFile", files[0]);
  }

  // Make Ajax request with the contentType = false, and procesDate = false
  var ajaxRequest = $.ajax({
       type: "POST",
       url: "/api/fileupload/uploadfile",
       contentType: false,
       processData: false,
       data: data
       });

在控制器内部，您可以拥有类似

if (HttpContext.Current.Request.Files.AllKeys.Any())
{
   // Get the uploaded image from the Files collection
   var httpPostedFile = HttpContext.Current.Request.Files["UploadedFile"];

   if (httpPostedFile != null)
   {
   // Validate the uploaded image(optional)

   // Get the complete file path
       var fileSavePath = Path.Combine(HttpContext.Current.Server.MapPath("~/UploadedFiles"), httpPostedFile.FileName);

    // Save the uploaded file to "UploadedFiles" folder
    httpPostedFile.SaveAs(fileSavePath);
}
 }

希望能帮助到你…