`pc客户端开始上课时设置服务ip` +++ put:/Teacher/startLesson *ip=null#当前服务器的内网ip地址 *int:classid=null#当前班级id int:minute=45#当前课堂有效时间（默认45）分钟 <<< success { "ret": 0, "msg": "ok", "uid": "1003143997294121958", "realname": "开发管理", "bjmc": null, "ip": "127.0.0.1", "isOnline": "1", "time": "2016-02-18 08:27", "data": { "classid": "1000147988936444505", "stulist": "[{\"stuno\":\"137\",\"realname\":\"代缴一\"}]" }, "lessonid": "16098",//课堂id } <<< error { "ret": -1, "msg": "当前IP地址不能为空/当前班级不能为空", } +++