2.1 API 鉴权接口，颁发Token

token说明:

token有效时间为2小时，失效后需要重新获取

• 请求参数，统一以application/x-www-form-urlencoded传递

请求示例：

    "app_id":"5747fbc10f0e60e0709d8d722",
    "app_key":"59b74c1323445f2d54dd07922"

返回结果：

    "request_id": "RqnwAR3En48ZbaMfa6Ub",
    "code": 0,
    "msg": "success",
    "data":{"access_token":"eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.
            eyJzdWIiOiJ0b2tlbiIsImFwcElkIjoiNTc0N2ZiYzEwZjBlNjBlMDcwOWQ4ZDdkIiwiaXN
            zIjoiYXBpIiwiZXhwIjoxNTA3NTE1ODQ5LCJqdGkiOiI1OWNkYWVjOTIyZTlmMTRlNmI0Y
            TkwNTIifQ.oPgr-a_95RxyZqMj2pzeOBb4vfMCz0ACED2L-fWIdnU"}
}