https://api.weixin.qq.com/sns/component/jscode2session

请求该接口返回结果：{"session_key":"E4pm01JrWDL2Wmh+rx6WvQ==","openid":"ojtgp5EJVYKwBxyI6u93HxL9HGQw"}

可是文档里明明说返回的数据结构是：

{
  "openid": "OPENID",
  "session_key": "SESSIONKEY",
  "unionid":"oHAUs6LSuwgHq-mlnFrffKXw3QYM"
}