<!--查看输出信息-->
<%

System.out.println("Header....");

Enumeration<String> e = request.getHeaderNames();

String key;

while(e.hasMoreElements()){

  key = e.nextElement();

  System.out.println(key+"="+request.getHeader(key));

}

System.out.println("Attribute....");

e = request.getAttributeNames();

while(e.hasMoreElements()){

  key = e.nextElement();

  System.out.println(key+"="+request.getAttribute(key));

}

System.out.println("Parameter....");

e = request.getParameterNames();

while(e.hasMoreElements()){

  key = e.nextElement();

  System.out.println(key+"="+request.getParameter(key));

}

%>