JSP和JSTL获取服务器参数

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



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>JSP和JSTL获取服务器参数</title>

  </head>

  <body>

  JSP方式<br/>

  <%



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("<br>"); }%>

<br/>



JSTL方式<br/>

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

${pageContext.session}                  |取得session对象<br>

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

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

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

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

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

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

${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<br>

${pageContext.session.id}               |取得session的ID<br>



${header["User-Agent"]}|用户浏览器的版本<br/>

${header["Host"]}|IP<br/>

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

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

${pageContext.request.serverPort}|端口信息<br>

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

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

</body>

</html>


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