HttpWebRequest 方法 GET/POST 不起作用
本文关键字:POST 不起作用 GET 方法 HttpWebRequest | 更新日期: 2023-09-27 18:35:58
我正在使用GoogleApi。我想使用谷歌 API 获取访问令牌作为响应。当我发送 httpwebrequest 以获取访问令牌时,然后
当我使用:- 请求时。方法 = "开机自检"
例外:- 此 URL 不支持 HTTP 方法 POST
当我使用:- 请求时。方法 = "GET"
异常:- System.Net.Protocol违规异常:无法发送具有此谓词类型的内容正文
实际请求可能如下所示:
POST /o/oauth2/token HTTP/1.1
Host: accounts.google.com
Content-Type: application/x-www-form-urlencoded
code=4/P7q7W91a-oMsCeLvIaQm6bTrgtp7&
client_id=8819981768.apps.googleusercontent.com&
client_secret={client_secret}&
redirect_uri=https://oauth2-login-demo.appspot.com/code&
grant_type=authorization_code
成功的响应以 JSON 数组的形式返回,类似于以下内容:
{
"access_token":"1/fFAGRNJru1FTz70BzhT3Zg",
"expires_in":3920,
"token_type":"Bearer"
}
我的代码是:-
var request = (HttpWebRequest)WebRequest.Create(@"https://accounts.google.com");
request.Method = "POST";
request.ContentType = "application/json";
//request.KeepAlive = false;
// request.Headers[HttpRequestHeader.Authorization] = "";
//request.ContentLength = 0;
using (StreamWriter streamWriter = new StreamWriter(request.GetRequestStream()))
{
string json = "{'"code'":'"4/M1IIC8htCuvYORuVJK16oadDb3Gd.cigIKgaPjvUYXE-sT2ZLcbSrckCLgwI'"," + "'"client_id'":'"841994137170.apps.googleusercontent.com'"," + "'"client_secret'":'"MXjKvevD_cKp5eQWZ1RFXfdo'"," + "'"redirect_uri'":'"http://gmailcheck.com/response.aspx'"," + "'"grant_type'":'"authorization_code'"}";
streamWriter.Write(json);
// streamWriter.Flush();
//streamWriter.Close();
}
try
{
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
StreamReader responsereader = new StreamReader(response.GetResponseStream());
var responsedata = responsereader.ReadToEnd();
//Session["responseinfo"] = responsereader;
}
}
catch (WebException ex)
{
using (WebResponse response = ex.Response)
{
var httpResponse = (HttpWebResponse)response;
using (Stream data = response.GetResponseStream())
{
var sr = new StreamReader(data);
throw new Exception(sr.ReadToEnd());
}
}
}
这是问题所在:
var request = (HttpWebRequest)WebRequest.Create(@"https://accounts.google.com");
这不是您最初显示的网址。这只是域根。你需要:
var request = (HttpWebRequest)WebRequest.Create("https://accounts.google.com/o/oauth2/token");
我已经删除了@
,因为您的字符串不包含任何换行符或反斜杠,因此使用逐字字符串文字没有任何好处。
(此外,我希望谷歌客户端API中会涵盖这一点 - 不是吗?