获取学生信息

{
    "msg": "获取成功",
    "code": 1,
    "data": {
        "id": "1",
        "studentCard": "guest",
        "password": null,
        "studentName": "guest",
        "sex": "男",
        "age": 19,
        "phone": "xxx",
        "email": "xxx",
        "major": "xxx",
        "className": "xxx1班",
        "createTime": null,
        "updateTime": null
    }
}