Question

我已经制作了一个WCF服务方法来上传服务器上的文件，并希望传递其他相关值以及流，但是从jquery我无法做出错误，我怎么能这样做。

这是我的WCF方法。

    public void UploadCustomFile(RemoteFileInfo request)
    {

        string FilePath = Path.Combine(HostingEnvironment.MapPath("~/Downloads"), "abc");
        int length = 0;
        using (FileStream writer = new FileStream(FilePath, FileMode.Create))
        {
            int readCount;
            var buffer = new byte[8192];
            while ((readCount = request.FileByteStream.Read(buffer, 0, buffer.Length)) != 0)
            {
                writer.Write(buffer, 0, readCount);
                length += readCount;
            }
        }

    }

这是我的RemoteFileInfo类：

[DataContract]
    public class RemoteFileInfo : IDisposable
    {
        [DataMember]
        public string FileName;

        [DataMember]
        public long Length;

        [DataMember]
        public System.IO.Stream FileByteStream;

        public void Dispose()
        {
            if (FileByteStream != null)
            {
                FileByteStream.Close();
                FileByteStream = null;
            }
        }   
    }

以下是jquery + html，

<body>
    <div>
        <input type="file" id="fileUpload" value="" />
        <br />
        <br />
        <button id="btnUpload" onclick="UploadFile()">
            Upload</button>
    </div>
    <button id="btnDownload" onclick="DownloadFile()">
        Download</button>
    <script type="text/javascript">
        function UploadFile() {
            // grab your file object from a file input
            fileData = document.getElementById("fileUpload").files[0];
            var data = new FormData();

            $.ajax({
                url: 'http://localhost:1398/AristMobileService.svc/UploadFile',
                type: 'POST',
                data: data,
                cache: false,
                dataType: 'json',
                processData: false, // Don't process the files
                contentType: "application/octet-stream", // Set content type to false as jQuery will tell the server its a query string request
                success: function (data) {
                    alert('successful..');
                },
                error: function (data) {
                    //alert('Some error Occurred!');
                }
            });

        }

    </script>
</body>

此外是json请求Body，我想在从jquery端发布数据时使用，

{
    "FileByteStream":{
        "__identity":{
            "__identity":{
                "__identity":null
            }
        }
    },
    "FileName":"String content",
    "Length":9223372036854775807
}

Answer 1

您甚至没有发送文件...您正在发送一个空的FormData对象。

至于包括两者，你需要使用FormData.append(key, value)来设置你要发送的文件或数据的每一部分

您还可以将整个表单元素传递到new FormData(formelement)

我试图从Jquery在WCF方法的流参数中发布数据。但不行

1 个答案: