微信接口的https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code报no suitable HttpMessageConverter found for response type

通过code来获取access_token时报no suitable HttpMessageConverter found for response type

 

　　微信通过接口返回的result无法直接用JSONObject，要先用String接收，再调用JSONObject.parseObject()来转换回JSONObject再获取里面的数据