**Try This**
    
    Try This Code 
    --- Controller ---

    return redirect('list')->with('message', 'Successfully');
    return redirect('list');
   
  ----  Blade view ------
    @if(session()->has('message'))
        <div class="alert alert-success">
            {{ session()->get('message') }}
        </div>
    @endif

Try

return Redirect::back()->withErrors(['msg' => 'The Message']);

在视图中调用这个

@if($errors->any())
<h4>{{$errors->first()}}</h4>
@endif

对于拉拉维尔 5.5+

控制器:

return redirect()->back()->with('success', 'your message here');

叶:

@if (Session::has('success'))
    <div class="alert alert-success">
        <ul>
            <li>{{ Session::get('success') }}</li>
        </ul>
    </div>
@endif

它适用于我和Laravel版本是^7.0

在控制器

return back()->with('success', 'Succesfully Added');

关于Blade文件

@if (session('success'))
      <div class="alert alert-success">
         {!! session('success') !!}
      </div>
@endif

有关文档，请参阅Laravel文档

另一种方法是

控制器

use Session;
       
Session::flash('message', "Special message goes here");
return Redirect::back();

View

@if (Session::has('message'))
   <div class="alert alert-info">{{ Session::get('message') }}</div>
@endif

在Laravel 5.5中:

return back()->withErrors($arrayWithErrors);

在使用Blade的视图中:

@if($errors->has())
    <ul>
    @foreach ($errors->all() as $error)
        <li>{{ $error }}</li>
    @endforeach
    </ul>
@endif