DocuSignAPI REST-为什么我的OAuth请求无法通过？

Question

I'm attempting to use the DocuSign REST API and create an OAuth request to execute Send of Behalf of (SOBO). Although I can't complete the first task, it's giving me back a Bad Request. What am I doing wrong?

Request with Headers:

POST https://demo.docusign.net/restapi/v2/oauth2/token

Accept: application/xml
Content-Type: application/xml
Content-Length: {length of body}

Request Body

<OAuthTokenRequest>
  <grant_type>password</grant_type>
  <client_id>{IntegratorKey}</client_id>
  <username>test@email.com</username>
  <password>{Password}</password>
  <scope>api</scope>
</OAuthTokenRequest>

Response with Error:

400 Bad Request 

<oauthErr xmlns="http://www.docusign.com/restapi" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <error>invalid_request</error>
  <error_description>An OAuth2 error occurred:</error_description>
</oauthErr>

Answer 1

Although most of the DocuSign REST API accepts XML formatting, OAuth requests must be made in x-www-form-urlencoded .

Change your request to the following:

Request with Headers:

POST https://demo.docusign.net/restapi/v2/oauth2/token

Accept: application/xml
Content-Type: application/x-www-form-urlencoded
Content-Length: {length of body}

Request Body:

grant_type=password&client_id={IntegratorKey}&username=test@email.com&password={Password}&scope=api

Sample Response:

200 OK

<oauthAccess xmlns="http://www.docusign.com/restapi" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <access_token>{Access Token}</access_token>
  <scope>api</scope>
  <token_type>bearer</token_type>
</oauthAccess>

More information can be obtained in this documentation .