C# 使用WP7中的webReuest使用RESTAPI发布json
我正在使用Rest API更新force.com上的db表。我发布json数据来更新db表,如下所示C# 使用WP7中的webReuest使用RESTAPI发布json,c#,json,windows-phone-7,force.com,C#,Json,Windows Phone 7,Force.com,我正在使用Rest API更新force.com上的db表。我发布json数据来更新db表,如下所示 // preparing webrequest HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri); // adding request headers request.ContentType = "application/json"; request.Head
// preparing webrequest
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
// adding request headers
request.ContentType = "application/json";
request.Headers["Authorization"] = "OAuth " + token;
request.Headers["X-PrettyPrint"] = "1";
// request method
request.Method = "PATCH";
// start the asynchronous operation
request.BeginGetRequestStream(new AsyncCallback(SaveBeginGetRequestStreamCallBack), request);
private void SaveBeginGetRequestStreamCallBack(IAsyncResult ar)
{
HttpWebRequest webRequest = (HttpWebRequest)ar.AsyncState;
Stream postStream = webRequest.EndGetRequestStream(ar);
(using (StreamWriter sw = new StreamWriter(postStream))
{
sw.Write(postData);
// postData is in json format like: {"Name":"Michel"}
}
postStream.close();
webRequest.BeginGetResponse(new AsyncCallback(SaveBeginGetResponseCallback), webRequest);
}
private void SaveBeginGetResponseCallback(IAsyncResult ar)
{
try
{
HttpWebRequest webRequest = (HttpWebRequest)ar.AsyncState;
HttpWebResponse response;
// End the get response operation
response = (HttpWebResponse)webRequest.EndGetResponse(ar);
Stream streamResponse = response.GetResponseStream();
StreamReader streamReader = new StreamReader(streamResponse);
string Response = streamReader.ReadToEnd();
streamResponse.Close();
streamReader.Close();
response.Close();
}
catch (WebException e)
{
MessageBox.Show(e.Message);
// Error treatment
}
但它显示了错误的请求错误。通过http请求发送json格式是否正确。在调用BeginGetResponse之前,您没有关闭/处理postStream 还有,打电话
sw.Write(data);
因为数据是一个字符串。您的调用(传递偏移量和计数)适用于字节数组。实际上,您正在调用一个格式化重载,谢谢您的回复。我已经按照u的建议进行了更改,但仍然显示相同的错误。您确定发送的是服务器能够理解的有效JSON吗?我正在使用此代码创建JSON StringBuilder sb=new StringBuilder();StringWriter sw=新的StringWriter(sb);JsonWriter JsonWriter=新的JsonTextWriter(sw);jsonWriter.Formatting=Formatting.Indented;jsonWriter.WritePropertyName(“名称”);jsonWriter.WriteValue(“Zeeshan”);并以json的形式传递sw,或者在发送字符串之前打印出字符串,以验证它是否符合预期。从服务器的角度来看,就json而言,您确定这是一个有效的请求吗?您发送的确切json数据是什么,以及您发送到的URL是什么。此外,错误响应将包含一个json正文,其中包含有关请求失败原因的更多信息