中间件用来做调用接口前的一个鉴权

    1. cmd运行代码创建中间件

      1. php think make:middleware ApiUserAuth

    2. 写入测试代码 ```javascript namespace app\http\middleware;

    class ApiUserAuth { public function handle($request, \Closure $next) { halt(“中间件”); return $next($request); } }

    2. 3. 在config/middleware.php里配置中间件
    3. ```javascript
    4. return [
    5.     // 默认中间件命名空间
    6.     'ApiUserAuth' => 'app\http\middleware\ApiUserAuth',
    7. ];
    1. 路由配置中间件
      1. Route::group('api/:version/',function (){
      2.  Route::get('user/login','api/:version.user/login');
      3. })->middleware("ApiUserAuth");
      5.调用接口查看结果
      1. string(9) "中间件"