jquery – 使用chunking进行程序化文件上传：仅发送第一个文件

当使用 jQuery-File-Upload plugin使用分块启用的 programmatic file upload时,无法获取多个文件发送.

我打电话如下：

fileUploadWidget.fileupload('send',{
    files: filesList
})

filesList是File对象的列表.

另外我已经设置了maxChunkSize,并将singleFileUploads设置为true(我也尝试过false),如Options wiki page所示.

有没有人有这样的工作成功？

更新：

我在GitHub上做了一个issue这个问题,这里是作者的回应：

[…] Chunked uploads only support one file per request.
That is,you can still simultaneously upload multiple files in chunks,but you’ll have to send mutliple requests for that.

我们的解决方案

正如已经评论过的那样,我们最终做的是将文件发送到一个循环,在这个循环中,widget被初始化为sequentialUploads设置为true(你会想要这个取决于你的后端如何配置)：

// for illustration only
// does not do anything with the returned jqXHR objects
for (i = 0; i < files.length; i++) {
    widget.fileupload('send',{ files: files[i] });
}

解决方法

如果你使用C#作为后端,你可以试试这个(Client-Side,JQuery)：

$("#btnUpload").click(function () { // btnUpload is the ID of any button for upload
            var formdata = new FormData(); //FormData object
            var fileInput = document.getElementById('fileInput');
            //Iterating through each files selected in fileInput
            for (i = 0; i < fileInput.files.length; i++) {
                //Appending each file to FormData object
                formdata.append(fileInput.files[i].name,fileInput.files[i]);
            }
            //Creating an XMLHttpRequest and sending
            var xhr = new XMLHttpRequest();
            xhr.open('POST','/UploadMethod'); // UploadMethod is your back-end code
            xhr.send(formdata);
            xhr.onreadystatechange = function () {
                if (xhr.readyState == 4 && xhr.status == 200) {
                    // alert("uploaded");
                    }
            }

        });

然后在你UploadMethod上这样做：(ServerSide,C#)

public void Upload()
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFileBase file = Request.Files[i]; //Uploaded file
                //Use the following properties to get file's name,size and MIMEType
                int fileSize = file.ContentLength;
                string fileName = file.FileName;
                string mimeType = file.ContentType;
                System.IO.Stream fileContent = file.InputStream;
                //To save file,use SaveAs method
                var appPath = HostingEnvironment.ApplicationPhysicalPath + "Documents/" + "_" +  DateTime.Now+ fileName;

                file.SaveAs(appPath); //File will be saved in Documents folder
              }
        }