java判断网页更新 java判断浏览器类型

String agent = request.getHeader("USER-AGENT");

if (null != agent && -1 != agent.indexOf("MSIE")){  //IE
        ……
}else if (null != agent && -1 != agent.indexOf("Mozilla")){	//Firefox

……

}else{	//其他浏览器
        ……
}

附注：

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";