php - LARAVEL -> 为什么 try catch 在 Laravel 中不起作用？

Question

我在 RouteServiceProvider 中有代码:

$router->bind('user', function ($value) {
    try{
        throw (new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException);
    }catch(Exception $e){
        exit('nott');
    }
});

我没有得到输出

nott

我得到了

Sorry, the page you are looking for could not be found.
NotFoundHttpException in RouteServiceProvider.php line 75:
...

编辑: 这有效:

$router->bind('user', function ($value) {
    try{
        throw (new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException);
    }catch(\Symfony\Component\HttpKernel\Exception\NotFoundHttpException $e){
        exit('addd');
    }
});

但这行不通:

$router->bind('user', function ($value) {
    try{
        return (new User)->findOrFail(122);
    }catch(\Symfony\Component\HttpKernel\Exception\NotFoundHttpException $e){
        exit('addd');
    }
});

Answer 1

$router->bind('user', function ($value) {
    try{
        throw (new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException);
    }catch(\Exception $e){
        exit('nott');
    }
});

或

use Exception; //on top

    $router->bind('user', function ($value) {
        try{
            throw (new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException);
        }catch(Exception $e){
            exit('nott');
        }
    });

我想现在你明白你错过了什么。