struts 令牌

废话不说，直接上代码:

/**
* Struts Action 类的辅助类，提供公共的实现方法
*
*/
public class ActionHelper extends Action{

private static Logger log = Logger.getLogger(ActionHelper.class);
/**
* 初始化页面调用Action的事前调用代码，主要用以处理公共逻辑。如令牌设置
* @param actionMapping
* @param actionForm
* @param httpServletRequest
* @param httpServletResponse
* @throws SessionInvalidException
*/
public void InitPreDo(ActionMapping actionMapping,
      ActionForm actionForm,
      HttpServletRequest httpServletRequest,
      HttpServletResponse httpServletResponse) throws SessionInvalidException
{
    saveToken(httpServletRequest); //新建一个令牌
    Init(actionMapping,actionForm,httpServletRequest,httpServletResponse);

}

/**
* 操作页面调用Action的事前调用代码，主要用以处理公共逻辑，如令牌校验
* @param actionMapping
* @param actionForm
* @param httpServletRequest
* @param httpServletResponse
* @throws SessionInvalidException
*/
public boolean OperatorPreDo(ActionMapping actionMapping,
      ActionForm actionForm,
      HttpServletRequest httpServletRequest,
      HttpServletResponse httpServletResponse) throws SessionInvalidException
{
   if(isTokenValid(httpServletRequest))
   {
   resetToken(httpServletRequest);
   Init(actionMapping,actionForm,httpServletRequest,httpServletResponse);
   return true;
   }
   return false;
}