JSP和JSTL获取服务器参数

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>




 
   
 
 
  JSP方式

  <%


String SERVER_NAME = request.getServerName();


String SERVER_SOFTWARE = getServletContext().getServerInfo();


String SERVER_PROTOCOL = request.getProtocol();


Integer SERVER_PORT = request.getServerPort();


String REQUEST_METHOD = request.getMethod();


String PATH_INFO = request.getPathInfo();


String PATH_TRANSLATED = request.getPathTranslated();


String SCRIPT_NAME = request.getServletPath();


String DOCUMENT_ROOT = request.getRealPath("/");


String QUERY_STRING = request.getQueryString();


String REMOTE_HOST = request.getRemoteHost();


String REMOTE_ADDR = request.getRemoteAddr();


String AUTH_TYPE = request.getAuthType();


String REMOTE_USER = request.getRemoteUser();


String CONTENT_TYPE = request.getContentType();


Integer CONTENT_LENGTH = request.getContentLength();


String HTTP_ACCEPT = request.getHeader("Accept");


String HTTP_USER_AGENT = request.getHeader("User-Agent");


String HTTP_REFERER = request.getHeader("Referer");


HashMap infoMap = new HashMap();


infoMap.put("SERVER_NAME", SERVER_NAME);


infoMap.put("SERVER_SOFTWARE", SERVER_SOFTWARE);


infoMap.put("SERVER_PROTOCOL", SERVER_PROTOCOL);


infoMap.put("SERVER_PORT", SERVER_PORT);
infoMap.put("REQUEST_METHOD", REQUEST_METHOD);


infoMap.put("PATH_INFO", PATH_INFO);


infoMap.put("PATH_TRANSLATED", PATH_TRANSLATED);


infoMap.put("SCRIPT_NAME", SCRIPT_NAME);


infoMap.put("DOCUMENT_ROOT", DOCUMENT_ROOT);


infoMap.put("QUERY_STRING", QUERY_STRING);


infoMap.put("REMOTE_HOST", REMOTE_HOST);


infoMap.put("REMOTE_ADDR", REMOTE_ADDR);


infoMap.put("AUTH_TYPE", AUTH_TYPE);


infoMap.put("REMOTE_USER", REMOTE_USER);


infoMap.put("CONTENT_TYPE", CONTENT_TYPE);


infoMap.put("CONTENT_LENGTH", CONTENT_LENGTH);


infoMap.put("HTTP_ACCEPT", HTTP_ACCEPT);


infoMap.put("HTTP_USER_AGENT", HTTP_USER_AGENT);


infoMap.put("HTTP_REFERER", HTTP_REFERER);


Iterator it = infoMap.keySet().iterator();


%>


<%
while (it.hasNext()) {
Object o = it.next();
%>
　　<%=o%>
　　<%=infoMap.get(o)%>
　　<% out.println("
"); }%>




JSTL方式

${pageContext.request}                  |取得请求对象

${pageContext.session}                  |取得session对象

${pageContext.request.queryString}      |取得请求的参数字符串

${pageContext.request.requestURL}       |取得请求的URL，但不包括请求之参数字符串

${pageContext.request.contextPath}      |服务的web application的名称

${pageContext.request.method}           |取得HTTP的方法(GET、POST)

${pageContext.request.protocol}         |取得使用的协议(HTTP/1.1、HTTP/1.0)

${pageContext.request.remoteUser}       |取得用户名称

${pageContext.session.new}              |判断session是否为新的，所谓新的session，表示刚由server产生而client尚未使用

${pageContext.session.id}               |取得session的ID



${header["User-Agent"]}|用户浏览器的版本

${header["Host"]}|IP

${pageContext.request.remoteAddr }      |取得用户的IP地址

${pageContext.servletContext.serverInfo}|取得主机端的服务信息

${pageContext.request.serverPort}|端口信息

${pageContext.request.serverName}|服务器名称

${pageContext.request.remoteHost}|客户机名称