10. 异常处理器

一、通过 注解 注册异常处理器

<?php
namespace App\Exception\Handler;use App\Exception\FooException;
use Hyperf\ExceptionHandler\ExceptionHandler;
use Hyperf\HttpMessage\Stream\SwooleStream;
use Swow\Psr7\Message\ResponsePlusInterface;
use Throwable;use Hyperf\ExceptionHandler\Annotation\ExceptionHandler as RegisterHandler;// Hyperf\ExceptionHandler\Annotation\ExceptionHandler 注解 取别名 RegisterHandler
#[RegisterHandler(server: 'http')]
class FooExceptionHandler extends ExceptionHandler
{public function handle(Throwable $throwable, ResponsePlusInterface $response){echo '异常被执行了';return $response->withStatus(501)->withBody(new SwooleStream('This is FooExceptionHandler'));}public function isValid(Throwable $throwable): bool{// isValid为true时，执行 handle方法return $throwable instanceof FooException;}
}

二、通过配置文件注册异常处理器

定义配置文件

• config/autoload/exception.php

<?phpreturn ['handler' => ['http' => [App\Exception\Handler\FooExceptionHandler::class,	// 新增配置项Hyperf\HttpServer\Exception\Handler\HttpExceptionHandler::class,App\Exception\Handler\AppExceptionHandler::class,],],
];

定义异常处理器

• app/Exception/Handler/FooExceptionHandler

<?php
namespace App\Exception\Handler;use App\Exception\FooException;
use Hyperf\ExceptionHandler\ExceptionHandler;
use Hyperf\HttpMessage\Stream\SwooleStream;
use Swow\Psr7\Message\ResponsePlusInterface;
use Throwable;class FooExceptionHandler extends ExceptionHandler
{public function handle(Throwable $throwable, ResponsePlusInterface $response){$this->stopPropagation();	// 调用该方法，异常不再往后传递echo '异常被执行了';return $response->withStatus(501)->withBody(new SwooleStream('This is FooExceptionHandler'));}public function isValid(Throwable $throwable): bool{// isValid为true时，执行 handle方法return $throwable instanceof FooException;}
}

定义异常类

• app/Exception/FooException

<?phpnamespace App\Exception;class FooException extends \RuntimeException
{}

三、触发异常（调用控制器方法）

<?phpnamespace App\Controller;use App\Exception\FooException;
use Hyperf\HttpServer\Annotation\AutoController;#[AutoController]
class TestController
{public function exception(){throw new FooException('test');}
}