'disks' => [
 'uploadimg'=>[
  'driver'=>'local',
  'root'=>storage_path(config('admin.upload_img_path'))
 ],
 'uploadfiles'=>[
  'driver'=>'local',
  'root'=>storage_path(config('admin.upload_file_path'))
 ],
 
 'local' => [
  'driver' => 'local',
  'root' => storage_path('app'),
 ],
 
 'public' => [
  'driver' => 'local',
  'root' => storage_path('app/public'),
  'url' => env('APP_URL').'/storage',
  'visibility' => 'public',
 ],
 
 's3' => [
  'driver' => 's3',
  'key' => env('AWS_KEY'),
  'secret' => env('AWS_SECRET'),
  'region' => env('AWS_REGION'),
  'bucket' => env('AWS_BUCKET'),
 ],
 
],

public function uploadImg(Request $request){
 
 $wenjian= $request->file('files');
 if ($wenjian) {
 
  //获取文件的原文件名 包括扩展名
  $yuanname= $wenjian->getClientOriginalName();
 
  //获取文件的扩展名
  $kuoname=$wenjian->getClientOriginalExtension();
 
  //获取文件的类型
  $type=$wenjian->getClientMimeType();
 
  //获取文件的绝对路径，但是获取到的在本地不能打开
  $path=$wenjian->getRealPath();
 
  //要保存的文件名 时间+扩展名
  $filename=date('Y-m-d') . '/' . uniqid() .'.'.$kuoname;
  //保存文件   配置文件存放文件的名字 ，文件名，路径
  $bool= Storage::disk('uploadimg')->put($filename,file_get_contents($path));
  //return back();
  return json_encode(['status'=>1,'filepath'=>$filename]);
 }else{
  $idCardFrontImg = '';
  return json_encode($idCardFrontImg);
 }
}

<img src="/storage/img/2018-04-27/5ae294e2830df.jpeg">