### 上传头像 ~~~[api] post:http://img.huan168.com/Api/Upload/uploadHeadImg *user_id="e5e3b4cba81b6206bf278bafabbf18a0"#用户id <<< success { "code": 200, "msg": "上传头像成功", "path": "/Uploads/Video/e5e3b4cba81b6206bf278bafabbf18a0/2018-03-15/5aa9e15fb9b90.png" } <<< error { "code": 400, "msg": "上传文件大小不符！" }