+++ get:/School/grades *string:schoolid#学校id *xd#学段（21:小学、31:初中、34:高中） <<< success { "ret": 0, "msg": "ok", "data": [ { "id": "1", "njmc": "2012", "schoolid": "1002143804554287036", "xd": "31" } ] } <<< error { "msg": "未知错误", "ret": -1 } +++