+++ get:/Exercises/answer *bigint:xtid#习题id *bigint:classid=0#班级id *bigint:kcid=0#课程id *int:ytlx=0#用途类型（1 预习用 2 讲前用 3 讲后用） bigint:id=0#自增主键，在查询结果中（默认为0），查询差量数据时使用 <<< success { "ret": 0, "msg": "ok", "1002143813608860115": [ { "id": "2", "xtid": "1002143813608860115", "uid": "1002143804586354731", "realname": "佚名", "sxda": "1002143813608915656,1002143813608916598,1002143813608917281,1002143813608937857", "flag": "0", "is_true": 1, "create_time": "1438150079" }, { "id": "25", "xtid": "1002143813608860115", "uid": "1002143805347170578", "realname": "樊贞暖", "sxda": "1002143813608915656,1002143813608916598,1002143813608917281,1002143813608937857", "flag": "0", "is_true": 1, "create_time": "1438246304" } ] } <<< error { "ret": -1, "msg": "参数错误", } +++