+++ post:/Exercises/answer *bigint:classid=0#班级id *bigint:kcid=0#课程id *bigint:xtid=0#习题id *int:ytlx#用途类型 <<< { "ret": 0, "msg": "ok" } <<< error { "msg": "请先选择上课班级！", "ret": -1 } +++