Struts2中StrutsRequestWrapper类

该类可获取一些请求地址，在自定义struts2标签时用到

 //获取值栈
         Map cont= this.getStack().getContext();
         StrutsRequestWrapper req=(StrutsRequestWrapper)cont.get(StrutsStatics.HTTP_REQUEST);
         //获取请求action的地址
         String url=(String)req.getAttribute("javax.servlet.forward.request_uri");
         System.out.println("PageComponent.start()"+url);

         //获取的标签所在jsp页面的全路径
         StringBuffer stringBuffer=req.getRequestURL();//http://localhost:8080/Struts2HibernateSpring/list.jsp
         System.out.println("PageComponent.start()"+stringBuffer.toString());

         //获取的是请求后台的地址，其中的参数的值
         Object object=req.getAttribute("pageNo");
         System.out.println("PageComponent.start()");
         //key--->value
         //javax.servlet.forward.query_string-->(获取请求参数字符串)pageNo=1&seachName=%E5%B0%9A%E6%99%93%E9%A3%9E
         //javax.servlet.forward.request_uri-->(获取请求路径到方法名)/Struts2HibernateSpring/StudentAction!queryStudent
         //javax.servlet.forward.context_path-->（ 获取项目名）/Struts2HibernateSpring
         //javax.servlet.forward.servlet_path--> (获取请求的action名字+method名字)/Struts2HibernateSpring
         //struts.request_uri --->(获取请求路径到方法名)/Struts2HibernateSpring/StudentAction!queryStudent
         //struts.view_uri -->(获取struts请求返回的jsp的路径)/list.jsp
         //__cleanup_recursion_counter---> 1
         //characterEncodingFilter.FILTERED--> true
         //struts.actionMapping--->ActionMapping{name='StudentAction', namespace='/', method='queryStudent', extension='null', params=null, result=null}
         //org.springframework.web.context.request.async.WebAsyncManager.WEB_ASYNC_MANAGER--->org.springframework.web.context.request.async.WebAsyncManager@10f892d
         //struts.valueStack--->com.opensymphony.xwork2.ognl.OgnlValueStack@1dc2914
         Enumeration<String> pd=req.getAttributeNames();
         while(pd.hasMoreElements()){
             String nameString=pd.nextElement();
             Object object2=req.getAttribute(nameString);
             System.out.println("PageComponent.start()"+object2);
         }