判断用户请求替PC或手机

判断用户请求为PC或手机

??最近做个网站，需要判断用户是通过手机浏览或PC浏览，找了很多资料，总是判断不全，我把我的代码贴出来，以后慢慢补充吧……

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String userAgent = "";String userAgents=request.getHeader("user-agent");if(userAgents != null ){userAgent  = userAgents;userAgent = userAgent.toUpperCase();}//out.print(">>>>"+userAgent);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     ) {   //通过手机访问}