jsp判断请求来自手机示例代码

<%
String wap = "http://3g.ssss.com.cn";

String agent = request.getHeader("user-agent");
//String agent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/534.51.22 (KHTML, like Gecko) Version/5.1.1 Safari/534.51.22";
String agentcheck = agent.trim().toLowerCase();
boolean isWAP = false;
String[] keywords = {"mobile", "android",
"symbianos", "iphone", "wp//d*", "windows phone",
"mqqbrowser", "nokia", "samsung", "midp-2",
"untrusted/1.0", "windows ce", "blackberry","ucweb",
"brew", "j2me", "yulong", "coolpad", "tianyu", "ty-",
"k-touch", "haier", "dopod", "lenovo", "huaqin", "aigo-",
"ctc/1.0", "ctc/2.0", "cmcc", "daxian", "mot-",
"sonyericsson", "gionee", "htc", "zte", "huawei", "webos",
"gobrowser", "iemobile", "wap2.0","WAPI"};
Pattern pf = Pattern.compile("wp//d*");
Matcher mf = pf.matcher(agentcheck);
if (agentcheck!=null&&(agentcheck.indexOf("windows nt") == -1 && agentcheck
.indexOf("Ubuntu") == -1)
|| (agentcheck.indexOf("windows nt") > -1 && mf.find())) {
for (int i = 0; i < keywords.length; i++) {
Pattern p = Pattern.compile(keywords[i]);
Matcher m = p.matcher(agentcheck);
//排除 苹果桌面系统 和ipad 、iPod
if (m.find() && agentcheck.indexOf("ipad") == -1
&& agentcheck.indexOf("ipod") == -1
&& agentcheck.indexOf("macintosh") == -1) {
isWAP = true;
break;
}
}
}
if (isWAP) {
response.sendRedirect(wap);
}
%>

/**手机浏览器的User-Agent里的关键词*/
"Nokia",//诺基亚，有山寨机也写这个的，总还算是手机，Mozilla/5.0 (Nokia5800 XpressMusic)UC AppleWebkit(like Gecko) Safari/530
"SAMSUNG",//三星手机 SAMSUNG-GT-B7722/1.0+SHP/VPP/R5+Dolfin/1.5+Nextreaming+SMM-MMS/1.2.0+profile/MIDP-2.1+configuration/CLDC-1.1
"MIDP-2",//j2me2.0，Mozilla/5.0 (SymbianOS/9.3; U; Series60/3.2 NokiaE75-1 /110.48.125 Profile/MIDP-2.1 Configuration/CLDC-1.1 ) AppleWebKit/413 (KHTML like Gecko) Safari/413
"CLDC1.1",//M600/MIDP2.0/CLDC1.1/Screen-240X320
"SymbianOS",//塞班系统的，
"MAUI",//MTK山寨机默认ua
"UNTRUSTED/1.0",//疑似山寨机的ua，基本可以确定还是手机
"Windows CE",//Windows CE，Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11)
"iPhone",//iPhone是否也转wap？不管它，先区分出来再说。Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; zh-cn) AppleWebKit/532.9 (KHTML like Gecko) Mobile/8B117
"iPad",//iPad的ua，Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; zh-cn) AppleWebKit/531.21.10 (KHTML like Gecko) Version/4.0.4 Mobile/7B367 Safari/531.21.10
"Android",//Android是否也转wap？Mozilla/5.0 (Linux; U; Android 2.1-update1; zh-cn; XT800 Build/TITA_M2_16.22.7) AppleWebKit/530.17 (KHTML like Gecko) Version/4.0 Mobile Safari/530.17
"BlackBerry",//BlackBerry8310/2.7.0.106-4.5.0.182
"UCWEB",//ucweb是否只给wap页面？ Nokia5800 XpressMusic/UCWEB7.5.0.66/50/999
"ucweb",//小写的ucweb貌似是uc的代理服务器Mozilla/6.0 (compatible; MSIE 6.0;) Opera ucweb-squid
"BREW",//很奇怪的ua，例如：REW-Applet/0x20068888 (BREW/3.1.5.20; DeviceId: 40105; Lang: zhcn) ucweb-squid
"J2ME",//很奇怪的ua，只有J2ME四个字母
"YULONG",//宇龙手机，YULONG-CoolpadN68/10.14 IPANEL/2.0 CTC/1.0
"YuLong",//还是宇龙
"COOLPAD",//宇龙酷派YL-COOLPADS100/08.10.S100 POLARIS/2.9 CTC/1.0
"TIANYU",//天语手机TIANYU-KTOUCH/V209/MIDP2.0/CLDC1.1/Screen-240X320
"TY-",//天语，TY-F6229/701116_6215_V0230 JUPITOR/2.2 CTC/1.0
"K-Touch",//还是天语K-Touch_N2200_CMCC/TBG110022_1223_V0801 MTK/6223 Release/30.07.2008 Browser/WAP2.0
"Haier",//海尔手机，Haier-HG-M217_CMCC/3.0 Release/12.1.2007 Browser/WAP2.0
"DOPOD",//多普达手机
"Lenovo",// 联想手机，Lenovo-P650WG/S100 LMP/LML Release/2010.02.22 Profile/MIDP2.0 Configuration/CLDC1.1
"LENOVO",// 联想手机，比如：LENOVO-P780/176A
"HUAQIN",//华勤手机
"AIGO-",//爱国者居然也出过手机，AIGO-800C/2.04 TMSS-BROWSER/1.0.0 CTC/1.0
"CTC/1.0",//含义不明
"CTC/2.0",//含义不明
"CMCC",//移动定制手机，K-Touch_N2200_CMCC/TBG110022_1223_V0801 MTK/6223 Release/30.07.2008 Browser/WAP2.0
"DAXIAN",//大显手机DAXIAN X180 UP.Browser/6.2.3.2(GUI) MMP/2.0
"MOT-",//摩托罗拉，MOT-MOTOROKRE6/1.0 LinuxOS/2.4.20 Release/8.4.2006 Browser/Opera8.00 Profile/MIDP2.0 Configuration/CLDC1.1 Software/R533_G_11.10.54R
"SonyEricsson",// 索爱手机，SonyEricssonP990i/R100 Mozilla/4.0 (compatible; MSIE 6.0; Symbian OS; 405) Opera 8.65 [zh-CN]
"GIONEE",//金立手机
"HTC",//HTC手机
"ZTE",//中兴手机，ZTE-A211/P109A2V1.0.0/WAP2.0 Profile
"HUAWEI",//华为手机，
"webOS",//palm手机，Mozilla/5.0 (webOS/1.4.5; U; zh-CN) AppleWebKit/532.2 (KHTML like Gecko) Version/1.0 Safari/532.2 Pre/1.0
"GoBrowser",//3g GoBrowser.User-Agent=Nokia5230/GoBrowser/2.0.290 Safari
"IEMobile",//Windows CE手机自带浏览器，
"WAP2.0"//支持wap 2.0的
"wapi"//是中国标准 为了对抗wifi (wifi是不让用的,行货的这功能都阉割了,只有水货手机有这功能) 是无线局域网

<script type="text/javascript">
function iswap(){
var agentcheck=navigator.userAgent.toLowerCase();
var chesys=true;
var isWAP=false;
var keywords = ["mobile", "android",
"symbianos", "iphone","windows phone",
"mqqbrowser", "nokia", "samsung", "midp-2",
"untrusted/1.0", "windows ce", "blackberry","ucweb",
"brew", "j2me", "yulong", "coolpad", "tianyu", "ty-",
"k-touch", "haier", "dopod", "lenovo", "huaqin", "aigo-",
"ctc/1.0", "ctc/2.0", "cmcc", "daxian", "mot-",
"sonyericsson", "gionee", "htc", "zte", "huawei", "webos",
"gobrowser", "iemobile", "wap2.0","wapi"];
//排除 windows,苹果等桌面系统 和ipad 、iPod
var rekeywords=["Windows 98", "Windows ME","Windows 2000","Windows XP","Windows NT","Ubuntu","ipad","ipod","macintosh"];

if (agentcheck!=null){
for (var i = 0; i < rekeywords.length; i++) {
if ( agentcheck.indexOf(rekeywords[i].toLowerCase())>-1){
chesys=false;
}
}
}

if (chesys){
for (var i = 0; i < keywords.length; i++) {
if ( agentcheck.indexOf(keywords[i].toLowerCase())>-1) {
isWAP = true;
break;
}
}
}
if (isWAP) {
window.location.href="http://3g.gf.com.cn";
}

}
</script>