view视图报错的定义：message.blade.php

@if(Session::has('success'))
   
   <div><strong>{{Session::get('success')}}</strong></div>
   
@endif

@if(Session::has('error'))
   
   <div><strong>{{Session::get('error')}}</strong></div>
   
@endif

页面调用

<tr>
    <th width="120"><i class="require">*</i>登录名：</th>
    <td>
        <input type="text" id ="uid" name="User[user_name]"  value="{{$lists->user_name}}"
          disabled> 
     <span >{{$errors->first('User.user_name')}}</span>
    </td>
</tr>