System.out.println("Protocol: " + request.getProtocol());
System.out.println("Scheme: " + request.getScheme());
System.out.println("Server Name: " + request.getServerName() ); //获得服务器的名字
System.out.println("Server Port: " + request.getServerPort()); //获得服务器的端口号
System.out.println("rotocol: " + request.getProtocol());
System.out.println("Server Info: " + getServletConfig().getServletContext().getServerInfo());
System.out.println("Remote Addr: " + request.getRemoteAddr()); /获得客户端的ip地址
System.out.println("Remote Host: " + 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
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()); //获得客户端向服务器端传送数据的方法有get、post、put等类型
System.out.println("ath Info: " + request.getPathInfo());
System.out.println("ath 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());//获得发出请求字符串的客户端地址
System.out.println("Servlet Path: " + request.getServletPath()); //获得客户端所请求的脚本文件的文件路径
System.out.println(request.getHeaderNames()); //返回所有request header的名字，结果集是一个enumeration（枚举）类的实例
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")); //返回客户端浏览器的版本号、类型
System.out.println("Connection : " + request.getHeader("Connection"));
System.out.println("Cookie : " + request.getHeader("Cookie"));
System.out.println("Created : " + session.getCreationTime());
System.out.println("LastAccessed : " + session.getLastAccessedTime());