+++ post:/v1/Student/joinClasses <<< post { "uid": "学生uid", "schoolid": "学校id", "gccode": [ { "gradeid": 1, "classid": 2, "code": 3 }, { "gradeid": 1, "classid": 2, "code": 3 } ] } <<< success { "ret": 0, "msg": "ok" } <<< error { "ret": -1, "msg": "未知错误" } +++