url:/dataentry/group/detail
version:`5.25`
in: {
    groupId:{type:Number,require:true,desc:班级ID}
}
out:{
    code: int,
    obj: {
        groupInfo:{
            id: 班级ID
            groupName: 班级名称
            teacherId: 教师ID
            teacherName: 教师名称
            assistantId: 助教ID
            assistantName: 助教名称
            beginTime: 班级开始时间,
            endTime: 班级结束时间,
            grades:[{id:,name:""}], //年级列表
            courses:[{id:,name:""}], //学科列表
        }
        studentList:[{
            id:
            loginName:""
            name:""
        }]
        teacherList:[{
            id:,
            loginName:"",
            name:"",
            courses:[{id:,name:""}]
        }]
    }
}