后台获取页面信息和传递的参数(不知参数个数和值得情况下jquery

后台获取页面信息和传递的参数(不知参数个数和值得情况下jquery控件)

public void parm(){
  String name,pvalue;
        Object avalue;
        Enumeration enum1;
  HttpServletRequest request = ServletActionContext.getRequest();
        System.out.println("/***************** Request Observer **************/");
       
        // observe Request Header
        enum1 = request.getHeaderNames();
        System.out.println("Request Header:");
        while (enum1.hasMoreElements()) {
            name = (String)enum1.nextElement();
            pvalue = request.getHeader(name);
            System.out.println("  " + name + " ---- " + pvalue);
        }
        enum1 = request.getParameterNames();

        // observe Request Parameters
        System.out.println("Request Parameters:");
        while (enum1.hasMoreElements()) {
            name = (String)enum1.nextElement();
            pvalue = request.getParameter(name);
            System.out.println("  " + name + " ---- " + pvalue);
        }
        enum1 = request.getAttributeNames();

        // observe Request Attributes
        System.out.println("Request Attributes:");
        while (enum1.hasMoreElements()) {
            name = (String)enum1.nextElement();
            avalue = request.getAttribute(name);
            System.out.println("  " + name + " ---- " + avalue);
           
            // observe OgnlValueStack bind by Struts 2
            if (avalue instanceof OgnlValueStack) {
                avalue = (OgnlValueStack)avalue;
                Map m = ((OgnlValueStack) avalue).getContext();
                System.out.println("  >> OgnlValueStack:");
                Iterator it = m.keySet().iterator();
                Object key;
                while (it.hasNext()) {
                    key = it.next();
                    System.out.println ("        " + key + " ---- " + m.get(key));
                }
            }
        }

        // observe Request Session
        HttpSession session = request.getSession(false);
        System.out.println("session: " + session);
        if (session!=null)
        {
            System.out.println("  sessionId: " + session.getId());
            enum1 = session.getAttributeNames();
            System.out.println("Session Attributes:");
            while (enum1.hasMoreElements()) {
                name = (String)enum1.nextElement();
                avalue = session.getAttribute(name);
                System.out.println("  " + name + " ---- " + avalue);
            }
        }
        System.out.println("/***************** End of Request Observer **************/");
}

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