java获取客服端信息的方法(系统，浏览器等)

如下所示：

string agent = request.getheader("user-agent"); 
system.out.println(agent); 
stringtokenizer st = new stringtokenizer(agent,";"); 
st.nexttoken(); 
string userbrowser = st.nexttoken(); 
system.out.println(userbrowser); 
string useros = st.nexttoken(); 
system.out.println(useros); 
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")); 
system.out.println(request.getheader("user-agent")); //返回客户端浏览器的版本号、类型 
system.out.println(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(request.getrequesturi()); //：获得发出请求字符串的客户端地址 
system.out.println(request.getservletpath()); //：获得客户端所请求的脚本文件的文件路径 
system.out.println(request.getservername()); //：获得服务器的名字 
system.out.println(request.getserverport()); //：获得服务器的端口号 
system.out.println(request.getremoteaddr()); //：获得客户端的ip地址 
system.out.println(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(request.getprotocol()); //： 
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("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"));

获得user-agent的值

在 asp.net 中使用 request.header["user-agent"] 得到浏览器的 user agent，也可以使用 request.useragent 来获取；

java 中使用 request.getheader(”user-agent”) 来获得；

php 中相应使用：$_server[http_user_agent]；

js中则使用navigator.useragent来获得（客户端经常使用它来做浏览器兼容）。

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