我正在尝试检索oauth访问令牌以便在asp.net mvc中调用某些谷歌API,为此我编写了以下操作代码:
public ActionResult GetOAuthToken()
{
String url = "https://accounts.google.com/o/oauth2/token";
// Create a request using a URL that can receive a post.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
// Set the Method property of the request to POST.
request.Method = "POST";
request.Host = "accounts.google.com";
// Create POST data and convert it to a byte array.
string postData = String.Format("code={0}&client_id={1}&client_secret={2}&redirect_uri={3}&grant_type=authorization_code", Request.QueryString["code"].ToString(), OAuthConfig.client_id, OAuthConfig.client_secret, OAuthConfig.token_redirect_uri);
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] byteArray = encoding.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
WebResponse response = request.GetResponse();
// SOME CODE TO PROCESS THE RESPONSE
Response.Redirect("/Home");
return View();
}
OAuthConfig是一个包含客户端ID、客户端密钥等信息的类。
在请求的GetResponse()行,我一直收到“远程服务器返回错误:(400)错误请求。”。我错在哪里了?
400 - Bad Request
的原因是数据格式不正确。你的请求出了问题。检查一下你的POST值是否有无效字符。 - Simon Whitehead