7.访问受保护资源(7. Accessing Protected Resources)

通过向资源服务器出示访问令牌，客户端访问受保护资源。资源服务器必须验证访问令牌，并确保它没有过期且其范围涵盖了请求的资源。资源服务器用于验证访问令牌的方法（以及任何错误响应）超出了本规范的范围，但一般包括资源服务器和授权服务器之间的互动或协调。

客户端使用访问令牌与资源服务器进行证认的方法依赖于授权服务器颁发的访问令牌的类型。通常，它涉及到使用具有所采用的访问令牌类型的规范定义的身份验证方案(如RFC6750)的HTTP“Authorization”的请求标头字段RFC2617。

7. Accessing Protected Resources

   The client accesses protected resources by presenting the access
   token to the resource server.  The resource server MUST validate the
   access token and ensure that it has not expired and that its scope
   covers the requested resource.  The methods used by the resource
   server to validate the access token (as well as any error responses)
   are beyond the scope of this specification but generally involve an
   interaction or coordination between the resource server and the
   authorization server.

   The method in which the client utilizes the access token to
   authenticate with the resource server depends on the type of access
   token issued by the authorization server.  Typically, it involves
   using the HTTP "Authorization" request header field [RFC2617] with an
   authentication scheme defined by the specification of the access
   token type used, such as [RFC6750].