REST API POST調用的（OAuth）授權請求標頭中的承載令牌

Question

嘿，我正在嘗試找出如何為REST API POST調用執行此OAuth授權令牌。

文件說明：

With a valid access token, your app can make calls to any Yammer API endpoint by sending the access token as a “Bearer” token in the “Authorization” request header.

GET /api/v1/messages/following.json HTTP/1.1 
Host: www.yammer.com 
Authorization: Bearer abcDefGhiFor

more details on the “Bearer” token refer to [enter link description here][1] 

If the access token expires or the user de-authorizes your app, the API request will return an HTTP 401 with the following error in the body of the response.

{
  "response": {
    "message": "Token not found.",
    "code": 16,
    "stat": "fail"
  }
}

如果發生此錯誤，您的應用可以通過重新運行適當的流程來請求新的訪問令牌。

目前，我的VB.net代碼是這樣的：

Dim request As HttpWebRequest
Dim response As HttpWebResponse = Nothing
Dim reader As StreamReader
Dim address As Uri
Dim data As StringBuilder
Dim byteData() As Byte
Dim postStream As Stream = Nothing

address = New Uri("https://www.yammer.com/api/v1/messages.json")
request = DirectCast(WebRequest.Create(address), HttpWebRequest)

request.Method = "POST"
request.Headers("Authorization") = "Bearer " & yammerAPI.userToken
request.ContentType = "application/json"
request.Host = "www.yammer.com"

Dim body As String = "test"
Dim replied_to_id As Integer = 123456789
Dim group_id As Integer = 123456789

data = New StringBuilder()
'data.Append("&replied_to_id=" & HttpUtility.UrlEncode(replied_to_id))
data.Append("group_id=" & HttpUtility.UrlEncode(group_id))
data.Append("&body=" & HttpUtility.UrlEncode(body))

byteData = UTF8Encoding.UTF8.GetBytes(data.ToString())
request.ContentLength = byteData.Length

Try
   postStream = request.GetRequestStream()
   postStream.Write(byteData, 0, byteData.Length)
Finally
   If Not postStream Is Nothing Then postStream.Close()
End Try

Try
   response = DirectCast(request.GetResponse(), HttpWebResponse)
   reader = New StreamReader(response.GetResponseStream())
   Debug.Print(reader.ReadToEnd())
Finally
   If Not response Is Nothing Then response.Close()
End Try

我一直收到以下錯誤： 遠程服務器返回錯誤：（401）未經授權。

我在以下Stackoverflow發布中找到了這一點：

Yammer API要求OAuth數據位於標頭中。 如果看一下他們的“獲取數據”示例，您將看到請求的樣子。

GET / api / v1 / messages / favorites_of / 1234 HTTP / 1.1主機：www.yammer.com

授權：OAuth的oauth_consumer_key = “KsTROcNF1Fx3e1PwA”，組oauth_token = “vlVH7A7DOm9wXuHdv58A”，oauth_signature_method = “PLAINTEXT”，oauth_timestamp = “1297383841092”，oauth_nonce = “1047685618”，oauth_verifier = “E4F8”，oauth_signature = “yPsEvDnNPIA8xGCFLvMJ73K0DD9ivMpATJeFOSo％26fSFh9UPkHQ6oRwK5OTne33ltnSnbQ9XrAhA72heg”

OAuth數據位於Authorization標頭中，而不位於URL中。 URL中唯一包含任何OAuth數據的時間是您進行授權的時間。

任何幫助都將有助於您更好地理解這一點！

Answer 1

我最近對Oauth的經驗表明，內容類型應為：

Request.ContentType = "application/x-www-form-urlencoded" Request.Method = "POST" Request.ContentLength = byteArray.Length

而不是request.ContentType =“ application / json”