前台部分--设备分类列表

接口地址：/exam/dvclslist

请求方式 get

参数:

• 无

返回格式：

{
    "code":1,
    "data":{
        "dvcls_total": 11,
        "dvcls_unlocked_num": 6,
        "device_list": [
            {
                "id": 1,
                "title": "设备1",
                "img": "//xxx.com/xx",
                "img_locked": "/xxx.com/xx",
                "summary": "xxxxx",
                "locked": true
            },
            {
                "id": 2,
                "title": "设备2",
                "img": "//xxx.com/xx",
                "img_locked": "//xxx.com/xx",
                "summary": "xxxxx",
                "locked": false
            }
        ]
    },
    "msg":"success"
}