DocuSign授权码授予访问令牌端点每次都返回错误请求

问题描述

我尝试了不同的方式来传递header和content，但是每次从bad request获取docusign来获取访问令牌。

下面是回调Web API方法，该方法在请求authorization code之后被调用：

[HttpGet]
 [AllowAnonymous]
 [Route("CallBack")]
 public string Callback()
 {
     string accessToken = "";
     try
     {
         var response = Request.Query;
         if (Request.Query != null && Request.Query.Keys != null && Request.Query.Keys.Count > 0)
         {
             var authorizationCode = Request.Query["code"];

             /*                    
                     Request => POST https://account-d.docusign.com/oauth/token
                     Content-Type: application/x-www-form-urlencoded
                     Header => Authorization: Basic BASE64_COMBINATION_OF_INTEGRATOR_AND_SECRET_KEYS
                     Data => grant_type=authorization_code&authorization_code=YOUR_AUTHORIZATION_CODE
             */

             //Body
             var keyValues = new Dictionary<string,string>();
             keyValues.Add("grant_type","authorization_code");
             keyValues.Add("authorization_code",authorizationCode);
             var bodyContent = new FormUrlEncodedContent(keyValues);

             //Header
             //Content-Type: application/x-www-form-urlencoded
             //Authorization: Basic BASE64_COMBINATION_OF_INTEGRATOR_AND_SECRET_KEYS 
             string base64Decoded = configuration.IntegrationKey + ":" + configuration.SecretKey;
             string base64Encoded;
             byte[] data = System.Text.ASCIIEncoding.ASCII.GetBytes(base64Decoded);
             base64Encoded = System.Convert.ToBase64String(data);

             var client = new System.Net.Http.HttpClient();
             client.BaseAddress = new Uri("https://account-d.docusign.com");
             var request = new System.Net.Http.HttpRequestMessage(HttpMethod.Post,"https://account-d.docusign.com/oauth/token");
             request.Content = bodyContent;

             request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded");
             request.Headers.Authorization = new AuthenticationHeaderValue("Basic",base64Encoded);

             var accessTokenresponse = client.SendAsync(request).Result;

             //Set access token
             //accessToken
         }
     }
     catch (Exception ex)
     {

     }

     return accessToken;
 }

解决方法

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