我用的eclipse配置都弄了，也能輸出就是不能輸出時間？？?求教。

struts.xml
<?xml?version="1.0"?encoding="UTF-8"?>
<!--?指定Strust配置文件的DTD信息?-->
<!DOCTYPE?struts?PUBLIC
		"-//Apache?Software?Foundation//DTD?Struts?Configuration?2.3//EN"
		"http://struts.apache.org/dtds/struts-2.3.dtd">
<!--?指定Struts2配置文件的根元素?-->
<struts>
	<package?name="default"??namespace="/"??extends="struts-default">
		
		<!--?注冊攔截器?-->
		<interceptors>
			<interceptor?name="mytimer"?class="com.imooc.interceptor.TimerInterceptor"></interceptor>
		</interceptors>
		<action?name="timer"?class="com.imooc.action.TimerAction">
			<result>/success.jsp</result>
			<!--?引用攔截器?-->
			<interceptor-ref?name="mytimer"></interceptor-ref>
		</action>
		
	</package>
</struts>

TimerAction.java
package?com.imooc.action;

import?com.opensymphony.xwork2.ActionSupport;

public?class?TimerAction?extends?ActionSupport?{

	@Override
	public?String?execute()?throws?Exception?{
		for(int?i=0;?i<10000;i++){
			System.out.println("陳京輝");
		}
		return?SUCCESS;
	}
	
}

TimerInterceptor.java
package?com.imooc.interceptor;

import?com.opensymphony.xwork2.ActionInvocation;
import?com.opensymphony.xwork2.interceptor.AbstractInterceptor;

/*
?*?計算Action花費時間
?*/
public?class?TimerInterceptor?extends?AbstractInterceptor?{

	@Override
	public?String?intercept(ActionInvocation?invocation)?throws?Exception?{
		//1.執行Action之前
		long?start?=?System.currentTimeMillis();
		//2.執行下一個攔截器，如果已經是最后一個攔截器，則執行目標Action
		String?result?=?invocation.invoke();
		//3.執行Action之后
		long?end?=?System.currentTimeMillis();
		System.out.println("執行Action花費的時間："?+?(end?-?start)?+?"ms");
		return?result;
	}

}