我认为您的路由器是反向的.

I think you have your routers in reverse.

<admin>
    <routers>
        <adminhtml>
            <args>
                <modules>
                    <sintax before="Mage_Adminhtml">Wpr_Giftproducts_Adminhtml</sintax>
                </modules>
            </args>
        </adminhtml>
    </routers>
</admin>

这种方式Giftproducts控制器是adminhtml路由器的一部分，而以前的方法是将管理控制器重新分配给giftrouter.

This way the Giftproducts controller is part of the adminhtml router, whereas the old way was reassigning admin controllers to giftrouter.