C# 在POST中将JSON从WP8发送到AppEngine-错误500_C#_Json_Google App Engine_Http Post_Windows Phone 8

C# 在POST中将JSON从WP8发送到AppEngine-错误500

c# json google-app-engine windows-phone-8

C# 在POST中将JSON从WP8发送到AppEngine-错误500,c#,json,google-app-engine,http-post,windows-phone-8,C#,Json,Google App Engine,Http Post,Windows Phone 8,您好，我正在尝试将以下JSON字符串发送到AppEngine服务器。字符串如下所示： {"param2":50.0,"param1":50.0,"additionalParams":{"param3":"123","userID":"1234561"}} 我用来发送的代码如下： public async Task<string> SendJSONData(string urlToCall, string JSONData) { // server to PO

您好，我正在尝试将以下JSON字符串发送到AppEngine服务器。字符串如下所示：

{"param2":50.0,"param1":50.0,"additionalParams":{"param3":"123","userID":"1234561"}}

我用来发送的代码如下：

public async Task<string> SendJSONData(string urlToCall, string JSONData)
    {
        // server to POST to
        string url = urlToCall;

        // HTTP web request
        var httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
        httpWebRequest.ContentType = "action";
        httpWebRequest.Method = "POST";

        // Write the request Asynchronously 
        using (var stream = await Task.Factory.FromAsync<Stream>(httpWebRequest.BeginGetRequestStream,
                                                                 httpWebRequest.EndGetRequestStream, null))
        {
            //create some json string
            string json = JSONData;

            // convert json to byte array
            byte[] jsonAsBytes = Encoding.UTF8.GetBytes(json);

            // Write the bytes to the stream
            await stream.WriteAsync(jsonAsBytes, 0, jsonAsBytes.Length);
        }

        WebResponse response = await httpWebRequest.GetResponseAsync();
        StreamReader requestReader = new StreamReader(response.GetResponseStream());
        String webResponse = requestReader.ReadToEnd();
        return webResponse;
}

请注意，我已经体验过“Content-Type”参数，将其设置为“text/plain”和“application/json”。服务器的答案仍然如下所示：

HTTP/1.1 500 Internal Server Error
Date: Wed, 20 Feb 2013 18:54:34 GMT
Content-Type: text/html; charset=UTF-8
Server: Google Frontend
Content-Length: 466


<html><head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<title>500 Server Error</title>
</head>
<body text=#000000 bgcolor=#ffffff>
<h1>Error: Server Error</h1>
<h2>The server encountered an error and could not complete your request.<p>If the            problem persists, please <A HREF="http://code.google.com/appengine/community.html">report</A> your problem and mention this error message and the query that caused it.</h2>

    // Write the request Asynchronously 
    using (var stream = await Task.Factory.FromAsync<Stream>
    (httpWebRequest.BeginGetRequestStream,httpWebRequest.EndGetRequestStream, null))
    {
        //create some json string
        string json = "action="+JSONData;

        // convert json to byte array
        byte[] jsonAsBytes = Encoding.UTF8.GetBytes(json);

        // Write the bytes to the stream
        await stream.WriteAsync(jsonAsBytes, 0, jsonAsBytes.Length);
    }

HTTP/1.1500内部服务器错误
日期：2013年2月20日星期三18:54:34 GMT
内容类型：text/html；字符集=UTF-8
服务器：谷歌前端
内容长度：466
500服务器错误
错误：服务器错误
服务器遇到错误，无法完成您的请求。如果问题仍然存在，请说明您的问题，并说明此错误消息和导致此问题的查询。

我应该怎么做，才能收到所需的“OK”响应？

OK所以问题在于我的帖子中缺少“action”参数。解决方法如下所示：

HTTP/1.1 500 Internal Server Error
Date: Wed, 20 Feb 2013 18:54:34 GMT
Content-Type: text/html; charset=UTF-8
Server: Google Frontend
Content-Length: 466


<html><head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<title>500 Server Error</title>
</head>
<body text=#000000 bgcolor=#ffffff>
<h1>Error: Server Error</h1>
<h2>The server encountered an error and could not complete your request.<p>If the            problem persists, please <A HREF="http://code.google.com/appengine/community.html">report</A> your problem and mention this error message and the query that caused it.</h2>

    // Write the request Asynchronously 
    using (var stream = await Task.Factory.FromAsync<Stream>
    (httpWebRequest.BeginGetRequestStream,httpWebRequest.EndGetRequestStream, null))
    {
        //create some json string
        string json = "action="+JSONData;

        // convert json to byte array
        byte[] jsonAsBytes = Encoding.UTF8.GetBytes(json);

        // Write the bytes to the stream
        await stream.WriteAsync(jsonAsBytes, 0, jsonAsBytes.Length);
    }

//异步写入请求
使用（var stream=await Task.Factory.fromsync）
（httpWebRequest.BeginGetRequestStream，httpWebRequest.EndGetRequestStream，null））
{
//创建一些json字符串
string json=“action=”+JSONData；
//将json转换为字节数组
byte[]jsonAsBytes=Encoding.UTF8.GetBytes（json）；
//将字节写入流
wait stream.WriteAsync（jsonAsBytes，0，jsonAsBytes.Length）；
}