那你取的值对吗？如下代码示例是返回的token的相关信息。取值是取 access_token 的值 确保你取的值是 24.  开头的

{
  "refresh_token": "25.b55fe1d287227ca97aab219bb249b8ab.315360000.1798284651.282335-8574074",
  "expires_in": 2592000,
  "scope": "public wise_adapt",
  "session_key": "9mzdDZXu3dENdFZQurfg0Vz8slgSgvvOAUebNFzyzcpQ5EnbxbF+hfG9DQkpUVQdh4p6HbQcAiz5RmuBAja1JJGgIdJI",
  "access_token": "24.6c5e1ff107f0e8bcef8c46d3424a0e78.2592000.1485516651.282335-8574074",
  "session_secret": "dfac94a3489fe9fca7c3221cbf7525ff"
}