java web 获取客户端操作系统信息

package com.java.basic.pattern;

import java.util.regex.Matcher;
import java.util.regex.Pattern; /**
* 获取客户端操作系统信息
* 从http的header中获取到user-agent,然后利用正则表达式判断是哪一种操作系统
*
* 暂只匹配Win 7、WinXP、Win2003、Win2000、MAC、WinNT、Linux、Mac68k、Win9x
*
* @param userAgent request.getHeader("user-agent")的返回值
*
* @author
*
*/
public class ClientOS { private static final String USER_AGENT = ""; public static void main(String[] args) {
String clientOS = getClientOS(USER_AGENT); } public static String getClientOS(String userAgent){
String cos = "unknow os"; Pattern p = Pattern.compile(".*(Windows NT 6\\.1).*");
Matcher m = p.matcher(userAgent);
if(m.find()){
cos = "Windows7";
return cos;
} p = Pattern.compile(".*(Windows NT 5\\.1|Windows XP).*");
m = p.matcher(userAgent);
if(m.find()){
cos = "WinXP";
return cos;
} p = Pattern.compile(".*(Windows NT 5\\.2).*");
m = p.matcher(userAgent);
if(m.find()){
cos = "Win2003";
return cos;
} p = Pattern.compile(".*(Win2000|Windows 2000|Windows NT 5\\.0).*");
m = p.matcher(userAgent);
if(m.find()){
cos = "Win2000";
return cos;
} p = Pattern.compile(".*(Mac|apple|MacOS8).*");
m = p.matcher(userAgent);
if(m.find()){
cos = "MAC";
return cos;
} p = Pattern.compile(".*(WinNT|WindowsNT).*");
m = p.matcher(userAgent);
if(m.find()){
cos = "WinNT";
return cos;
} p = Pattern.compile(".*Linux.*");
if(m.find()){
cos = "Linux";
return cos;
} p = Pattern.compile(".*68k|68000.*");
m = p.matcher(userAgent);
if(m.find()){
cos = "Mac68k";
return cos;
} p = Pattern.compile(".*(9x 4.90|Win9(5|8)|Windows 9(5|8)|95/NT|Win32|32bit).*");
m = p.matcher(userAgent);
if(m.find()){
cos = "Win9x";
return cos;
} return cos;
} }
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