tp5.1中間件的使用

定義一箇中間件：

namespace app\index\middleware;

class Check
{
    public function handle($request,\Closure $next, $name){
        echo "midd-check";

        return $next($request);
    }
}

config/middleware.php 註冊中間件

return [
    // 默認中間件命名空間
    'default_namespace' => 'app\\http\\middleware\\',
    'check' => 'app\index\middleware\Check:class',
];

控制器中使用中間件： only和except
控制器必須繼承think\controller;因爲controller中有registerMiddleware，註冊的就是$middleware數組中的中間件

namespace app\index\controller;


use think\Controller;
use app\index\middleware\Check;

class MiddlewareTest extends Controller
{
    protected $middleware = [
                    'check' => ['only'    => ['hello'] ],
                ];

    public function hello(){
        echo 'middleware-hello';
    }
}