今天遇到一個坑爹的項目需求，做個筆記方便下次再用。
需求描述：
1.打開對方官網https:test.cn
2.用賬戶登陸https:test.cn
3.登陸成功后跳轉到我們的網站https:my.cn,並且返回一個code給我們
4.進入我們系統后根據返回的code在后台用代碼post對方的一個action 地址:https://https:test.cn/CNS-AS/OAuth/Token/1.1 獲取一個Access_token
5.將獲取到的Access_token添加到http 頭文件中再去調用對方的wcf接口https:test.cn/CNS-Service/CNSServices.svc/CNSServices
6.最后拿到驗證通過的賬戶信息，最后停留https:my.cn 我們站點進行相關操作
廢話少說，直接上代碼
1.https:test.cn 登陸成功后跳轉的地址：
https://test.cn/CNS-AS/OAuth/Authorize?client_id=indegene_client&redirect_uri=https:my.cn/home/index&state=12321&scope=http://tempuri.org/ICNSServices/GetCNSUserName&response_type=code
2.進入https:my.cn后代碼
public ActionResult Index()
{
//1-3step(Authorization Response)
string code = Request["code"];
string state = Request["state"];
//4. Access Token Request
HttpWebRequest objWebRequest = (HttpWebRequest)WebRequest.Create("https://test.cn/CNS-AS/OAuth/Token/1.1"); //請求地址
//設置用戶名密碼的Base64編碼
string code1 = Convert.ToBase64String(Encoding.ASCII.GetBytes(string.Format("{0}:{1}", "test", "test")));
string postData = string.Format("grant_type=authorization_code&code={0}&redirect_uri={1}&client_id={2}&client_secret={3}", code, "http://my/home/index", "indegene_client", "indegene_secretIJH"); // 要發放的數據
byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(postData);
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
objWebRequest.Method = "POST";//提交方式
objWebRequest.ContentType = "application/x-www-form-urlencoded";
objWebRequest.ContentLength = byteArray.Length;
Stream newStream = objWebRequest.GetRequestStream(); // Send the data.
newStream.Write(byteArray, 0, byteArray.Length); //寫入參數
newStream.Close();
//響應請求
//5. Access Token Response
HttpWebResponse response = (HttpWebResponse)objWebRequest.GetResponse();//獲取響應
StreamReader sr = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);
string textResponse = sr.ReadToEnd(); // 返回的數據
Response.Write(textResponse);//打印返回值
AccessToken access_token = JsonConvert.DeserializeObject<AccessToken>(textResponse);
//6. Request CNS user information by access token（調用wcf）
CNS.CNSServicesClient svc = new CNS.CNSServicesClient();
using (OperationContextScope scope =
new OperationContextScope(svc.InnerChannel))
{
//添加消息頭
HttpRequestMessageProperty requestMessage = new HttpRequestMessageProperty();
requestMessage.Headers.Add("Authorization", "aaa" + access_token.Access_token);
OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] = requestMessage;
//調用wcf（必須先添加消息頭，否則不能調用（身份驗證））
string res = svc.GetCNSUserName();
}
}
public class AccessToken {
private string access_token;
public string Access_token
{
get { return access_token; }
set { access_token = value; }
}
private string token_type;
public string Token_type
{
get { return token_type; }
set { token_type = value; }
}
private string expires_in;
public string Expires_in
{
get { return expires_in; }
set { expires_in = value; }
}
private string refresh_token;
public string Refresh_token
{
get { return refresh_token; }
set { refresh_token = value; }
}
private string scope;
public string Scope
{
get { return scope; }
set { scope = value; }
}
}