因此，如您所见，参数是按顺序而不是按名称传递给函数的.

So, as you've seen the parameters are passed to the function in order, not by name.

要实现所需的功能，您可以在函数中通过如下类型提示请求对象来访问这些路由参数:

To achieve what you want, you can access these route parameters from within your function by type hinting the request object to it like this:

class ProductController extends Controller
{
    function list(Request $request){  # <----------- don't pass the params, just the request object

        $page = $request->route('page');   # <--- Then access by name
        $category = $request->route('category');

        dd("Page: $page | Category: $category");
    }
}

然后，您当然可以将所有3条路线设置为使用相同的控制器方法:

Then of course you would set all 3 of your routes to hit that same controller method:

Route::get('/{category}/Page{page}', 'ProductController@list');
Route::get('/Page{page}', 'ProductController@list');
Route::get('/{category}', 'ProductController@list');

希望这会有所帮助..！

Hope this helps..!