java 通过request.getHeader(“user-agent”)解析浏览器信息实例代码。

/**
*
* @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