use Exception;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;

class CustomExceptionHandler extends ExceptionHandler
{
    public function report(Exception $exception)
    {
        // 异常记录在这里
    }

    public function render($request, Exception $exception)
    {
        switch ($exception) {
            case is_a($exception, 'Illuminate\Database\QueryException'):
                $message = 无法连接到数据库。';
                break;
            default:
                $message = $exception->getMessage();
        }

        return response()->json([
            'success' => false,
            'message' => $message,
        ], 500);
    }
}

use App\Exceptions\CustomExceptionHandler;

protected $dontReport = [
    // 这里忽略了报告的异常
];

protected $handlers = [
    'Illuminate\Database\QueryException' => CustomExceptionHandler::class,
];