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);
        }