referrer.java

来自「webwork source」· Java 代码 · 共 53 行

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.action.standard;

import webwork.action.ActionSupport;
import webwork.action.ServletResponseAware;
import webwork.action.CommandDriven;
import webwork.action.ServletRequestAware;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;

/**
 *	Redirect to the page that referred this action invocation.
 *
 * This action is useful to set as result of an action which
 * perform some update of state on a page (such as removing or updating data).
 *
 *	@author Rickard 謆erg ([e-mail])
 *	@version $Revision: 1.2 $
 */
public class Referrer
   extends Redirect
   implements ServletRequestAware
{
   // Attributes ----------------------------------------------------
   HttpServletRequest request;

   // Implements ServletRequestAware --------------------------------
   public void setServletRequest(HttpServletRequest request)
   {
      this.request = request;
   }

   // Action implementation -----------------------------------------
   /**
    * Redirect to URL
    */
   protected String doExecute()
      throws Exception
   {
      setUrl(request.getHeader("referer"));

      return super.doExecute();
   }
}