Question

我无法在Windows手机中发布图像，这会转换为字节数组，这里是mycode -

var client = new WebClient();
client.DownloadStringCompleted += dataSubmitCompleted;
client.DownloadStringAsync(new Uri(
    "here url/Service1.svc/saverecord3" + convertImageToArray(bitmapImage1),
    UriKind.Absolute));

这里convertImageToArray是将照片转换为字节数组的方法

Answer 1

您不应该在GET请求中提交图像，这是DownloadStringAsync所做的。正如@radoslaf所提到的，您应该使用 Upload 方法（默认情况下会执行POST）。如果您要发送字节数组，则应使用UploadDataAsync（而不是UploadString）。

您还应该对服务进行编码以从客户端接收字节。 http://blogs.msdn.com/b/carlosfigueira/archive/2008/04/17/wcf-raw-programming-model-receiving-arbitrary-data.aspx上的帖子展示了如何实施此类服务。

评论后更新 - 我知道，WP7.5的WebClient API非常有限。对于这种情况，您可能更适合使用HttpWebRequest类型。下面的代码显示了如何将其用于您的场景。

    private void Button_Click_1(object sender, RoutedEventArgs e)
    {
        HttpWebRequest req = HttpWebRequest.CreateHttp("http://here.url/service1.svc/saverecord3");
        req.Method = "POST";
        req.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";
        req.BeginGetRequestStream(GetRequestStreamCompleted, req);
    }

    void GetRequestStreamCompleted(IAsyncResult ar)
    {
        byte[] imageBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        HttpWebRequest req = (HttpWebRequest)ar.AsyncState;
        Stream reqStream = req.EndGetRequestStream(ar);
        reqStream.Write(imageBytes, 0, imageBytes.Length);
        reqStream.Close();
        req.BeginGetResponse(GetResponseCompleted, req);
    }

    void GetResponseCompleted(IAsyncResult ar)
    {
        HttpWebRequest req = (HttpWebRequest)ar.AsyncState;
        HttpWebResponse resp = (HttpWebResponse)req.EndGetResponse(ar);
        this.Dispatcher.BeginInvoke(() =>
        {
            this.txtStatus.Text = "Upload result: " + resp.StatusCode;
        });
    }

将字节数组上传到WCF服务器

1 个答案: