Java JSP獲取請求頭判斷是什麼瀏覽器

1.js:function sourceDevice(){

var ua = navigator.userAgent.toLowerCase();

if(ua.indexOf("iphone") != -1){

return IPHONE;

}else if(ua.indexOf("android") != -1){

return ANDROID;

}else if(ua.indexOf("ipad") != -1){

return IPAD;

}else if(ua.indexOf("windows nt") != -1){

return PC;

}else{

return OTHERDEVICE;

}

}

function sourceBrow(){

var ua = navigator.userAgent.toLowerCase();

if(ua.match(/MicroMessenger/i)=="micromessenger") {

return WEIXIN;

}else if (ua.indexOf("ucbrowser") != -1){

return UC;

}else if(ua.indexOf("360 aphone browser") != -1){

return THREESIXZERO;

}else if(ua.indexOf("safari") != -1){

if(sourceType == 1){

return SAFARI;

}

return OTHERBROW;

}else{

return OTHERBROW;

}

}

2.java 

 String header=request.getHeader("user-agent");