相关疑难解决方法(0)

我希望通过电子邮件ID获取客户信息,因此我在控制器中创建了一个包含内容的方法:

public function showAction(){
    $customer_email = "abc@mail.com";
    $customer = Mage::getModel("customer/customer");
    $customer->setWebsiteId(Mage::app()->getWebsite()->getId());
    $customer->loadByEmail($customer_email);
    echo $customer->getId();
    echo $customer->getFirstName();
    echo $customer->getEmail(); 
}

但是当它运行时它返回null值,我不知道为什么？请帮我