只需要实现了 Swoft\Http\Server\Contract\MiddlewareInterface 接口均为一个合法的中间件，其中 process() 方法为该中间件逻辑处理方法。

配置全局中间件

    ...
    'httpDispatcher'=>[
        'middlewares'=>[
            AuthMiddleware::class,
            ApiMiddleware::class
        ]
    ]
    ...
]

通过 @Middleware 和 @Middlewares, 可以很方便的配置中间件到当前的 Controller 和 Action 内

提前拦截请求

namespace App\Http\Middleware;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Swoft\Bean\Annotation\Mapping\Bean;
use Swoft\Context\Context;
use Swoft\Http\Server\Contract\MiddlewareInterface;
/**
 * @Bean()
 */
class SomeMiddleware implements MiddlewareInterface
    /**
     * Process an incoming server request.
     * @param ServerRequestInterface $request
     * @param RequestHandlerInterface $handler
     * @return ResponseInterface
     * @inheritdoc
     */
    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        $path = $request->getUri()->getPath();
        if ($path === '/favicon.ico') {
            $response = Context::mustGet()->getResponse();
            return $response->withStatus(404);
        }
        return $handler->handle($request);
    }
}

用户JWT登陆验证

namespace App\Http\Middleware;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Swoft\Bean\Annotation\Mapping\Bean;
use Swoft\Context\Context;
use Swoft\Http\Server\Contract\MiddlewareInterface;
/**
 * @Bean()
{
    /**
     * Process an incoming server request.
     * @param ServerRequestInterface $request
     * @param RequestHandlerInterface $handler
     * @return ResponseInterface
     * @inheritdoc
     */
    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        // before request handle
        // 判断token
        $token = $request->getHeaderLine("token");
        $type = \config('jwt.type');
        $public = \config('jwt.publicKey');
        try {
            $auth = JWT::decode($token, $public, ['type' => $type]);
            $request->user = $auth->user;
        } catch (\Exception $e) {
            $json = ['code'=>0,'msg'=>'授权失败']
            $response = Context::mustGet()->getResponse();
            return $response->withData($json);
        }
        $response = $handler->handle($request);
        return $response;
        // after request handle
}