laravel实现于语言包的完美切换方法

 protected $middlewareGroups = [
    'web' => [
      \App\Http\Middleware\EncryptCookies::class,
      \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
      \Illuminate\Session\Middleware\StartSession::class,
      \Illuminate\View\Middleware\ShareErrorsFromSession::class,
      \App\Http\Middleware\VerifyCsrfToken::class,
      \App\Http\Middleware\Language::class, //语言包中间件注册。
    ],

use Illuminate\Support\Facades\Session;
use Illuminate\Support\Facades\App;
use Illuminate\Http\Response;

public function ins(Request $request){
    if($request->ajax()){
      $data = $request->all();
      App::setLocale($data['language']);
      $res = $request->session()->put('language',$data['language']);      
      return $this->returnCode(200,'',$res);
    }else{

		//刷新后页面，再去获取语言包
      $rr = App::getLocale();

	//写入自己的逻辑存把信息返回到页面中区
      return view('welcome')->with('lan',$rr);
    }
  }

<div class="container">
      <div class="content">
          <!--<div class="title"><a href="/demo/zh_cn" rel="external nofollow" >{{ trans('welcome.message') }}</a></div>-->
          <select οnchange="changelanguage(this.value)">
            <option value="en">
               @if(App::getLocale() =='en')
                selected
               @else
               @endif
              English
            </option>
            <option value='zh_cn'@if(App::getLocale() == 'zh_cn') selected @else @endif>简体中文</option>>
             <div>{{trans('welcome.message')}}{{$lan}}</div>
          </select>
       
        
      </div>
      <script src="{{asset('public/home/js/jquery.min.js')}}"></script>
       <script>
         function changelanguage(val){
           $.ajax({
             type :'get',
             url :'demos',
             data:{
              language :val 
             },
             dataType :'json',
             success:function(res){
               
               if(res){
                 window.location.reload();
               }
             }
           })
         }
       </script>
  </body>