System.out.println(request.getHeaderNames()); //：返回所有request header的名字,結(jié)果集是一個(gè)enumeration（枚舉）類的實(shí)例.
String agent = request.getHeader("user-agent");
System.out.println(agent);
StringTokenizer st = new StringTokenizer(agent,";");
st.nextToken();
//得到用戶的瀏覽器名
String userbrowser = st.nextToken();
System.out.println(userbrowser);
//得到用戶的操作系統(tǒng)名
String useros = st.nextToken();
System.out.println(useros);
//取得本機(jī)的信息也可以這樣：
//操作系統(tǒng)信息
System.out.println(System.getProperty("os.name")); //win2003竟然是win xp?
System.out.println(System.getProperty("os.version"));
System.out.println(System.getProperty("os.arch"));
//瀏覽器：
System.out.println(request.getHeader("user-agent"));
//再送個(gè)紅包
System.out.println(request.getHeader("user-agent")); //返回客戶端瀏覽器的版本號(hào),、類型
System.out.println(request.getMethod()); //：獲得客戶端向服務(wù)器端傳送數(shù)據(jù)的方法有g(shù)et,、post,、put等類型
System.out.println(request.getRequestURI()); //：獲得發(fā)出請(qǐng)求字符串的客戶端地址
System.out.println(request.getServletPath()); //：獲得客戶端所請(qǐng)求的腳本文件的文件路徑
System.out.println(request.getServerName()); //：獲得服務(wù)器的名字
System.out.println(request.getServerPort()); //：獲得服務(wù)器的端口號(hào)
System.out.println(request.getRemoteAddr()); //：獲得客戶端的ip地址
System.out.println(request.getRemoteHost()); //：獲得客戶端電腦的名字,若失敗,則返回客戶端電腦的ip地址
System.out.println(request.getProtocol()); //：
System.out.println(request.getHeaderNames()); //：返回所有request header的名字,結(jié)果集是一個(gè)enumeration(枚舉)類的實(shí)例
System.out.println("Protocol: " request.getProtocol());
System.out.println("Scheme: " request.getScheme());
System.out.println("Server Name: " request.getServerName() );
System.out.println("Server Port: " request.getServerPort());
System.out.println("Protocol: " request.getProtocol());
System.out.println("Server Info: " getServletConfig().getServletContext().getServerInfo());
System.out.println("Remote Addr: " request.getRemoteAddr());
System.out.println("Remote Host: " request.getRemoteHost());
System.out.println("Character Encoding: " request.getCharacterEncoding());
System.out.println("Content Length: " request.getContentLength());
System.out.println("Content Type: " request.getContentType());
System.out.println("Auth Type: " request.getAuthType());
System.out.println("HTTP Method: " request.getMethod());

System.out.println("Path Info: " request.getPathInfo());
System.out.println("Path Trans: " request.getPathTranslated());
System.out.println("Query String: " request.getQueryString());
System.out.println("Remote User: " request.getRemoteUser());
System.out.println("Session Id: " request.getRequestedSessionId());
System.out.println("Request URI: " request.getRequestURI());
System.out.println("Servlet Path: " request.getServletPath());
System.out.println("Accept: " request.getHeader("Accept"));
System.out.println("Host: " request.getHeader("Host"));
System.out.println("Referer : " request.getHeader("Referer"));
System.out.println("Accept-Language : " request.getHeader("Accept-Language"));
System.out.println("Accept-Encoding : " request.getHeader("Accept-Encoding"));
System.out.println("User-Agent : " request.getHeader("User-Agent"));
System.out.println("Connection : " request.getHeader("Connection"));
System.out.println("Cookie : " request.getHeader("Cookie"));
System.out.println("Created : " session.getCreationTime());