Question

我正在尝试从WP7应用调用google URL shortner API，我首先尝试使用控制台应用：

        var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://www.googleapis.com/urlshortener/v1/url");
        httpWebRequest.ContentType = "application/json";
        httpWebRequest.Method = "POST";

        using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
        {
            string json = "{\"longUrl\":\"http://www.google.com/\"}";
            Console.WriteLine(json);
            streamWriter.Write(json);
        }

        var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
        using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
        {
            var responseText = streamReader.ReadToEnd();
            Console.WriteLine(responseText);
        }
        Console.Read();

它工作正常，并且返回一切正常，但当我尝试在 Windows Phone应用上执行此操作时

    private void button1_Click(object sender, RoutedEventArgs e)
    {            
        testConnection();
    }

    private void testConnection()
    {
        if (!NetworkInterface.GetIsNetworkAvailable())
            MessageBox.Show("There's no internet connection, please reconnect to the internet and try again");
        else
        {                
            var req = (HttpWebRequest)WebRequest.Create("https://www.googleapis.com/urlshortener/v1/url");
            req.ContentType = "application/json";
            req.Method = "POST";
            req.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), req);
            textBlock2.Text = "Done";               

        }
    }
    void GetRequestStreamCallback(IAsyncResult asynchronousResult)
    {
        HttpWebRequest webRequest = (HttpWebRequest)asynchronousResult.AsyncState;
        // End the stream request operation
        Stream postStream = webRequest.EndGetRequestStream(asynchronousResult);

        // Create the post data
        // Demo POST data:
        string postData = "http://www.google.com";
        byte[] byteArray = Encoding.Unicode.GetBytes(postData);

        // Add the post data to the web request            
        postStream.Write(byteArray, 0, byteArray.Length);
        postStream.Close();

        // Start the web request
        webRequest.BeginGetResponse(new AsyncCallback(GetResponseCallback), webRequest);
    }


    void GetResponseCallback(IAsyncResult asynchronousResult)
    {

        try
        {
            HttpWebRequest webRequest = (HttpWebRequest)asynchronousResult.AsyncState;
            HttpWebResponse response;
            // End the get response operation
            response = (HttpWebResponse)webRequest.EndGetResponse(asynchronousResult);
            Stream streamResponse = response.GetResponseStream();
            StreamReader streamReader = new StreamReader(streamResponse);
                            textBlock1.Text= streamReader.ReadToEnd();
            streamResponse.Close();
            streamReader.Close();
            response.Close();

        }
        catch (WebException e)
        {

        }
    }

代码总是转到try方法的catch并给出“not found”错误。

Answer 1

SSL和不受信任的证书存在已知问题。当前的Windows Phone 7应用程序模型不支持使用SSL连接到需要ClientCertificates的网站（仅支持BasicAuthentication）。您可以在此处阅读相同的问题：http://forums.create.msdn.com/forums/p/65076/398730.aspx

Answer 2

我有一个类似的问题（这是有道理的，因为我开始使用此代码作为我的示例...）当我更改以下代码时，它开始工作到我可以再次前进的地步。

......来自：

byte[] byteArray = Encoding.Unicode.GetBytes(postData);

...到（相当于）：

byte[] byteArray = Encoding.UTF8.GetBytes(postData);

HttpWebRequest“POST”返回服务器错误（异常）

2 个答案: