为struts2中自己实现webwork2中的AroundInterceptor拦截器

package com.yanek.util;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public abstract class AroundInterceptor
  implements Interceptor
{
  protected transient Log log;

  public AroundInterceptor()
  {
    this.log = LogFactory.getLog(super.getClass()); }

  public void destroy() {
  }

  public void init() {
  }

  public String intercept(ActionInvocation invocation) throws Exception {
    String result = null;

    before(invocation);
    result = invocation.invoke();
    after(invocation, result);

    return result;
  }

  protected abstract void after(ActionInvocation paramActionInvocation, String paramString)
    throws Exception;

  protected abstract void before(ActionInvocation paramActionInvocation)
    throws Exception;
}

实现它:可以处理action执行前,执行后的拦截处理