public function getRegister()
{
 return view('auth.register');
}

public function postRegister(Request $request)
{
 $rules = [
  'username'=>'required|unique:finance_enewsuser',
  'password' => 'required|between:6,20|confirmed'
 ];
 $messages = [
  'required'=>':attribute不能为空',
  'unique'=>'用户名已被注册',
  'between' => '密码必须是6~20位之间',
  'confirmed' => '新密码和确认密码不匹配'
 ];
 $username = $request->input('username');
 $password = $request->input('password');
 $group = $request->input('group');
 $data = $request->all();
 $validator = Validator::make($data, $rules, $messages);
 if ($validator->fails()) {
  return back()->withErrors($validator);
 }
 $data = [
  'username' => $username,
  'password' => bcrypt($password),
  'groupid' => $group,
  'checked' => 0,
  'styleid' => 1,
  'filelevel' => 0,
  'loginnum' => 0,
  'lasttime' => time(),
  'lastip' => '127.0.0.1',
  'truename' => '',
  'email' => '',
  'pretime' => time(),
  'preip' => '127.0.0.1',
 ];
 User::create($data); //插入一条新纪录，并返回保存后的模型实例
 //如果注册后还想立即登录的话，可以使用$user = User::create($data); Auth::login($user); 进行认证
 return redirect('/');
}

public function getRegister()
{
 return view('auth.register');
}

public function postRegister(Request $request)
{
 $rules = [
  'username'=>'required|unique:finance_enewsuser',
  'password' => 'required|between:6,20|confirmed'
 ];
 $messages = [
  'required'=>':attribute不能为空',
  'unique'=>'用户名已被注册',
  'between' => '密码必须是6~20位之间',
  'confirmed' => '新密码和确认密码不匹配'
 ];
 $username = $request->input('username');
 $password = $request->input('password');
 $group = $request->input('group');
 $data = $request->all();
 $validator = Validator::make($data, $rules, $messages);
 if ($validator->fails()) {
  return back()->withErrors($validator);
 }
 $data = [
    'username' => $username,
    'password' => bcrypt($password),
    'groupid' => $group,
    'checked' => 0,
    'styleid' => 1,
    'filelevel' => 0,
    'loginnum' => 0,
    'lasttime' => time(),
    'lastip' => '127.0.0.1',
    'truename' => '',
    'email' => '',
    'pretime' => time(),
    'preip' => '127.0.0.1',
   ];
 User::create($data); //插入一条新纪录，并返回保存后的模型实例
 return redirect('/');
}

<form class="login-form" action="" method="post">
 {!! csrf_field() !!}
 <h3 class="font-green">Sign Up</h3>
 @if(count($errors) > 0)
  <div class="alert alert-danger display-hide" style="display: block;">
   <button class="close" data-close="alert"></button>
   <span> </span>
  </div>
 @endif
 <div class="form-group">
  <label class="control-label visible-ie8 visible-ie9">用户名</label>
  <input class="form-control placeholder-no-fix" type="text" autocomplete="off" placeholder="Username" name="username"> </div>
 <div class="form-group">
  <label class="control-label visible-ie8 visible-ie9">密码</label>
  <input class="form-control placeholder-no-fix" type="password" autocomplete="off" id="register_password" placeholder="Password" name="password"> </div>
 <div class="form-group">
  <label class="control-label visible-ie8 visible-ie9">重复密码</label>
  <input class="form-control placeholder-no-fix" type="password" autocomplete="off" placeholder="Repeat password" name="password_confirmation"> </div>
 <div class="form-group">
  <label class="control-label visible-ie8 visible-ie9">用户组</label>
  <select name="group" class="form-control">
    <option value="1"> 超级管理员 </option>
    <option value="2"> 管理员 </option>
    <option value="3"> 编辑 </option>
  </select>
 </div>
 <div class="form-actions">
  <button type="submit" id="register-submit-btn" class="btn btn-success uppercase pull-right">注册</button>
 </div>
</form>

<?php

namespace App\Http\Middleware;

use Closure;
use Auth;

class CheckLoginMiddleware
{
 public function handle($request, Closure $next)
 {
  //使用Auth方法，需要引入use Auth;方法
  //$request->is('login')表示请求的URL是否是登录页
  //因为我们打算使用全局的，所以，需要把登录页排除，不然会无限重定向
  //如果你的登录页不是/login,而是/auth/login的话，就写$request->is('auth/login')
  //并且我们要在请求处理后执行其任务，因为我们需要获取到用户的登录信息
  $response = $next($request);
  if (!Auth::check() && !$request->is('login')) {
   return redirect('/login');
  }
  return $response;
 }
}

\App\Http\Middleware\CheckLoginMiddleware::class

<?php

namespace App\Http\Middleware;

use Closure;
use Auth;

class CheckGroupMiddleware
{
 public function handle($request, Closure $next)
 {
  $user = Auth::user();
  if ($user->groupid != 1) {
   return redirect('/');
  }
  return $next($request);
 }
}

'user.group' => \App\Http\Middleware\CheckGroupMiddleware::class

Route::get('/', ['middleware' => ['user.group'], function () {
 //
}]);

$this->middleware('user.group');

Route::get('register', 'UserController@getRegister')->middleware('user.group');
Route::post('register', 'UserController@postRegister')->middleware('user.group');

class MyController extends Controller
{
 public function __construct()
 {
  $this->middleware('user.group');
 }

 public function index()
 {
  return view('my.index');
 }
}