错误与异常拦截

http 控制器错误异常

在 http 控制器中出现错误，系统将使用默认异常处理进行输出至客户端，代码如下：

<?php
protected function onException(\Throwable $throwable, Request $request, Response $response)
{
    if(is_callable($this->httpExceptionHandler)){
        call_user_func($this->httpExceptionHandler,$throwable,$request,$response);
    }else{
        $response->withStatus(Status::CODE_INTERNAL_SERVER_ERROR);
        $response->write(nl2br($throwable->getMessage()."\n".$throwable->getTraceAsString()));
    }
}

可直接在控制器重写 onException 方法：

<?php
namespace App\HttpController;
use App\ViewController;
use EasySwoole\Http\AbstractInterface\Controller;
use EasySwoole\Http\Message\Status;
class Base extends ViewController
{
    function index()
    {
        // TODO: Implement index() method.
        $this->actionNotFound('index');
    }
    function onException(\Throwable $throwable): void
    {
        var_dump($throwable->getMessage());
    }
    protected function actionNotFound(?string $action): void
    {
        $this->response()->withStatus(Status::CODE_NOT_FOUND);
        $this->response()->write('action not found');
    }
}

自定义异常处理

开发者可自定义异常处理文件：

<?php
namespace App;
use EasySwoole\Http\Request;
use EasySwoole\Http\Response;
class ExceptionHandler
{
    public static function handle(\Throwable $exception, Request $request, Response $response)
    {
        var_dump($exception->getTraceAsString());
    }
}

在 initialize 事件中使用 DI 注册异常处理:

<?php
public static function initialize()
{
    \EasySwoole\Component\Di::getInstance()->set(\EasySwoole\EasySwoole\SysConst::HTTP_EXCEPTION_HANDLER, [\App\ExceptionHandler::class, 'handle']);
}