获取媒体目录

{
  "code": 0,
  "data": [
    {
      "label": "/media/",
      "value": "/media/"
    },
    {
      "label": "/media/child",
      "value": "/media/child"
    },
    {
      "label": "/media/test",
      "value": "/media/test"
    },
    {
      "label": "/media/test/12",
      "value": "/media/test/12"
    }
  ]
}