调用Identity Server connect/token端点返回不完整JWT Access Token求助

Hey there, let's walk through the most common reasons why you're receiving that undelimited long string instead of a proper JWT access token:

• Incorrect Client Access Token Type Configuration
  Identity Server lets you choose between self-contained JWT tokens and opaque reference tokens. If your client is configured with AccessTokenType = AccessTokenType.Reference, the server will return that plain long string you're seeing instead of a JWT. This reference token needs to be validated via the introspect endpoint later. Double-check your client setup—make sure it's set to use JWT tokens if that's what you need.

• Missing or Invalid Request Parameters
  Ensure your connect/token request includes all required parameters correctly:

  • Confirm the grant_type matches what your client is allowed to use (e.g., client_credentials, password).
  • Verify you're requesting valid scopes associated with resources that expect JWT tokens.
  • Don't forget to set the Content-Type header to application/x-www-form-urlencoded—this is mandatory for token requests.

• Global Identity Server Token Settings
  It's possible the server has a global configuration that forces reference tokens for all clients. Check if the server's setup overrides the default token type, such as setting a global AccessTokenType or modifying IdentityServerOptions to prioritize reference tokens.

• Custom Token Generator Implementation
  If your Identity Server instance uses a custom ITokenGenerator or has modified the token creation pipeline, this could replace the default JWT generation logic with a custom opaque token. Review any server-side custom code that touches token generation to rule this out.

A quick test you can run: Update your client configuration to explicitly set AccessTokenType = AccessTokenType.Jwt and re-request the token—if you get a proper JWT with dots, that confirms the client setting was the issue.

内容的提问来源于stack exchange，提问作者userlkjsflkdsvm