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

<?php

return [
    '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

<?php

namespace App\Exception;

class FooException extends \RuntimeException
{

}

三、触发异常（调用控制器方法）

<?php

namespace App\Controller;

use App\Exception\FooException;
use Hyperf\HttpServer\Annotation\AutoController;

#[AutoController]
class TestController
{
    public function exception()
    {
        throw new FooException('test');
    }
}