spring的aop配置完如何没反应

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:aop="http://www.springframework.org/schema/aop"    xsi:schemaLocation="http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans.xsd    http://www.springframework.org/schema/aop    http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">    <aop:config>        <aop:aspect id="aspect1" ref="aspectTest">            <aop:before pointcut="execution(public String com.test.action.LoginAction.login(..))" method="before"/>        </aop:aspect>    </aop:config>    <bean id="aspectTest" class="com.test.bean.AspectTest"/></beans>

    public String login() {        System.out.println("aaa");        return SUCCESS;    }