java 通过request.getHeader("user-agent")解析浏览器

/**
 * 
 * @author cc
 * 20120307
 */
public class BrowseTool {
	private final static String IE9="MSIE 9.0";
	private final static String IE8="MSIE 8.0";
	private final static String IE7="MSIE 7.0";
	private final static String IE6="MSIE 6.0";
	private final static String MAXTHON="Maxthon";
	private final static String QQ="QQBrowser";
	private final static String GREEN="GreenBrowser";
	private final static String SE360="360SE";
	private final static String FIREFOX="Firefox";
	private final static String OPERA="Opera";
	private final static String CHROME="Chrome";
	private final static String SAFARI="Safari";
	private final static String OTHER="其它";
	
	
	public String checkBrowse(String userAgent){
		if(regex(OPERA, userAgent))return OPERA;
		if(regex(CHROME, userAgent))return CHROME;
		if(regex(FIREFOX, userAgent))return FIREFOX;
		if(regex(SAFARI, userAgent))return SAFARI;
		if(regex(SE360, userAgent))return SE360;
		if(regex(GREEN,userAgent))return GREEN;
		if(regex(QQ,userAgent))return QQ;
		if(regex(MAXTHON, userAgent))return MAXTHON;
		if(regex(IE9,userAgent))return IE9;
		if(regex(IE8,userAgent))return IE8;
		if(regex(IE7,userAgent))return IE7;
		if(regex(IE6,userAgent))return IE6;
		return OTHER;
	}
	public boolean regex(String regex,String str){
		Pattern p =Pattern.compile(regex,Pattern.MULTILINE);
		Matcher m=p.matcher(str);
		return m.find();
	}
	
	public static void main(String[] args) {
		String ie9    ="Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)";
		String ie8    ="Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322)";
		String ie7    ="Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322)";
		String ie6    ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)";
		String aoyou  ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; Maxthon 2.0)";
		String qq     ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322) QQBrowser/6.8.10793.201";
		String green  ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; GreenBrowser)";
		String se360  ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; 360SE)";
		
		String chrome ="Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/534.11 (KHTML, like Gecko) Chrome/9.0.570.0 Safari/534.11";               
		String safari ="Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8";
		String fireFox="Mozilla/5.0 (Windows NT 5.2; rv:7.0.1) Gecko/20100101 Firefox/7.0.1";
		String opera  ="Opera/9.80  (Windows NT 5.2; U; zh-cn) Presto/2.9.168 Version/11.51";
		String other  ="(Windows NT 5.2; U; zh-cn) Presto/2.9.168 Version/11.51";
		BrowseTool b=new BrowseTool();
		System.out.println(b.checkBrowse(ie9));
		System.out.println(b.checkBrowse(ie8));
		System.out.println(b.checkBrowse(ie7));
		System.out.println(b.checkBrowse(ie6));
		System.out.println(b.checkBrowse(aoyou));
		System.out.println(b.checkBrowse(qq));
		System.out.println(b.checkBrowse(green));
		System.out.println(b.checkBrowse(se360));
		System.out.println(b.checkBrowse(chrome));
		System.out.println(b.checkBrowse(safari));
		System.out.println(b.checkBrowse(fireFox));
		System.out.println(b.checkBrowse(opera));
		System.out.println(b.checkBrowse(other));
	}
	
}

引用页面：http://www.oschina.net/code/snippet_114195_9146