中间件是为了过滤一系列的http请求，比如验证后台登录

HTTP 中间件提供了为过滤进入应用的 HTTP 请求提供了一套便利的机制。

中间件：middleware

1、中间件的配置文件在哪里？

    app\Http\kernel.php

2、如何创建自己的中间件？

    照葫芦画瓢

    打开app\Http\kernel.php 看以下代码

       php artisan make:middleware AdminCheck   直接回车(在命令行中执行)

        打开AdminCheck.php文件

<?php

namespace App\Http\Middleware;

use Closure;

class AdminCheck
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {

        //在这里进行代码的判断，如登录信息啊，
        if(!session("key")){
            //code...
        }
        return $next($request);
    }
}

    这是命令创建的文件，所有的判断代码在handle中去做处理

3、中间件创建成功后，如何使用啊？

    打开 app/Http/routes.php

    使用分组路由，并加上中间件，那么来看看是如何添加的

<?php
    
    //使用一个中间件，web
    Route::group(['middleware'=>'web'],function(){
        
        //多个路由方法
    
    });

    //使用多个中间件
     Route::group(['middleware'=>['web','adminCheck']],function(){
        
        //多个路由方法
    
    });
    
    
    //综合
    //使用prefix 可以省略在写路由的admin
    //Admin 这是放在Controller目录下的Admin
     Route::group(['prefix'=>'admin','namespace'=>'Admin','middleware'=>['web','adminCheck']],function(){
        
        Route::get('index',['uses'=>'UserController@index','as'=>'userIndex']);
        
        //多个路由方法
    
    });

这就是中间件，如还需了解路由规则，请点击  http://www.xiaosongit.com/index.php/Index/detail/id/127.html

artisan都有哪些命令呢？ 通过  php artisan 命令查看

G:\phpstudy\WWW\laravel\laravel-v5.2.15>php artisan
Laravel Framework version 5.2.22

Usage:
  command [options] [arguments]

Options:
  -h, --help            Display this help message
  -q, --quiet           Do not output any message
  -V, --version         Display this application version
      --ansi            Force ANSI output
      --no-ansi         Disable ANSI output
  -n, --no-interaction  Do not ask any interactive question
      --env[=ENV]       The environment the command should run under.
  -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:
  clear-compiled      Remove the compiled class file
  down                Put the application into maintenance mode
  env                 Display the current framework environment
  help                Displays help for a command
  list                Lists commands
  migrate             Run the database migrations
  optimize            Optimize the framework for better performance
  serve               Serve the application on the PHP development server
  tinker              Interact with your application
  up                  Bring the application out of maintenance mode
 app
  app:name            Set the application namespace
 auth
  auth:clear-resets   Flush expired password reset tokens
 cache
  cache:clear         Flush the application cache
  cache:table         Create a migration for the cache database table
 config
  config:cache        Create a cache file for faster configuration loading
  config:clear        Remove the configuration cache file
 db
  db:seed             Seed the database with records
 event
  event:generate      Generate the missing events and listeners based on registration
 key
  key:generate        Set the application key
 make
  make:auth           Scaffold basic login and registration views and routes
  make:console        Create a new Artisan command
  make:controller     Create a new controller class
  make:event          Create a new event class
  make:job            Create a new job class
  make:listener       Create a new event listener class
  make:middleware     Create a new middleware class
  make:migration      Create a new migration file
  make:model          Create a new Eloquent model class
  make:policy         Create a new policy class
  make:provider       Create a new service provider class
  make:request        Create a new form request class
  make:seeder         Create a new seeder class
  make:test           Create a new test class
 migrate
  migrate:install     Create the migration repository
  migrate:refresh     Reset and re-run all migrations
  migrate:reset       Rollback all database migrations
  migrate:rollback    Rollback the last database migration
  migrate:status      Show the status of each migration
 queue
  queue:failed        List all of the failed queue jobs
  queue:failed-table  Create a migration for the failed queue jobs database table
  queue:flush         Flush all of the failed queue jobs
  queue:forget        Delete a failed queue job
  queue:listen        Listen to a given queue
  queue:restart       Restart queue worker daemons after their current job
  queue:retry         Retry a failed queue job
  queue:table         Create a migration for the queue jobs database table
  queue:work          Process the next job on a queue
 route
  route:cache         Create a route cache file for faster route registration
  route:clear         Remove the route cache file
  route:list          List all registered routes
 schedule
  schedule:run        Run the scheduled commands
 session
  session:table       Create a migration for the session database table
 vendor
  vendor:publish      Publish any publishable assets from vendor packages
 view
  view:clear          Clear all compiled view files