java web判断手机还是pc机访问

String userAgent=request.getHeader("user-agent");
if(userAgent!= null ){
userAgent = userAgent.toUpperCase();
}
if (userAgent.indexOf("NOKI") > -1 || // Nokia phones and emulators
userAgent.indexOf("ERIC") > -1 || // Ericsson WAP phones and emulators
userAgent.indexOf("WAPI") > -1 || // Ericsson WapIDE 2.0
userAgent.indexOf("MC21") > -1 || // Ericsson MC218
userAgent.indexOf("AUR") > -1  || // Ericsson R320
userAgent.indexOf("R380") > -1 || // Ericsson R380
userAgent.indexOf("UP.B") > -1 || // UP.Browser
userAgent.indexOf("WINW") > -1 || // WinWAP browser
userAgent.indexOf("UPG1") > -1 || // UP.SDK 4.0
userAgent.indexOf("UPSI") > -1 || //another kind of UP.Browser
userAgent.indexOf("QWAP") > -1 || // unknown QWAPPER browser
userAgent.indexOf("JIGS") > -1 || // unknown JigSaw browser
userAgent.indexOf("JAVA") > -1 || // unknown Java based browser
userAgent.indexOf("ALCA") > -1 || // unknown Alcatel-BE3 browser (UP based)
userAgent.indexOf("MITS") > -1 || // unknown Mitsubishi browser
userAgent.indexOf("MOT-") > -1 || // unknown browser (UP based)
userAgent.indexOf("MY S") > -1 || //  unknown Ericsson devkit browser
userAgent.indexOf("WAPJ") > -1 || //Virtual WAPJAG www.wapjag.de
userAgent.indexOf("FETC") > -1 || //fetchpage.cgi Perl script from www.wapcab.de
userAgent.indexOf("ALAV") > -1 || //yet another unknown UP based browser
userAgent.indexOf("WAPA") > -1 || //another unknown browser (Web based "Wapalyzer")
userAgent.indexOf("OPER") > -1 || //Opera
userAgent.indexOf("DOPOD") > -1 ||  //多普达
userAgent.indexOf("SYMBIAN") > -1   //symbian系统
) {//手机访问
}

Pattern pattern = Pattern.compile(";\\s?(\\S*?\\s?\\S*?)\\s?(Build)?/");
Matcher matcher = pattern.matcher(userAgent);
String model = null;
if (matcher.find()) {
model = matcher.group(1).trim();
log.debug("通过userAgent解析出机型：" + model);
}