struts2拦截器的实现

package org.mobiletrain.interceptor;

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

/**
 *  struts2拦截器继承AbstractInterceptor类
 * @author czy
 *
 */
public class PerfInterceptor extends AbstractInterceptor {


 /* 重写intercept方法*/
@Override
public String intercept(ActionInvocation invocation) 
        throws Exception {
    long start = System.currentTimeMillis();
    //在执行原方法的前后进行时间计算
    String result = invocation.invoke();
    long end = System.currentTimeMillis();
    String name = invocation.getInvocationContext().getName();
    System.out.println(name + "总耗时为: " + (end - start) + "ms");
    return result;
    }
  }