request.getHeader(“User-agent”)返回客户端浏览器的版本号、类型
getHeader(String name)：获得http协议定义的传送文件头信息，
request. getMethod()：获得客户端向服务器端传送数据的方法有GET、POST、PUT等类型
request. getRequestURI()：获得发出请求字符串的客户端地址
request. getServletPath()：获得客户端所请求的脚本文件的文件路径
request. getServerName()：获得服务器的名字
request.getServerPort()：获得服务器的端口号
request.getRemoteAddr()：获得客户端的IP地址
request.getRemoteHost()：获得客户端电脑的名字，若失败，则返回客户端电脑的IP地址
request.getProtocol()：
request.getHeaderNames()：返回所有request header的名字，结果集是一个Enumeration（枚举）类的实例
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Server Info</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body>
<%
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();
%>
<table border="1">
<%
while (it.hasNext()) {
Object o = it.next();
%>
<tr>
<td>
<%=o%>
<td>
<%=infoMap.get(o)%>
</td>
</tr>
<%
}
%>
</table>
</body>
</html>
