看到了一篇很好的文章, 《在天貓，前端做什么？》,里面有天貓php判斷移動(dòng)設(shè)備的正則(個(gè)人猜測(cè))，覺(jué)得很好用,于是就決定移植到JSP里面。

jsp文件名為 index.jsp,其實(shí)也可以使用過(guò)濾器來(lái)進(jìn)行攔截,然后跳轉(zhuǎn)到其他域名去。

完整代碼如下:

復(fù)制代碼代碼如下:

 
<%@page import="java.util.regex.Matcher"%> 
<%@page import="java.util.regex.Pattern"%> 
<%@ page language="java" pageEncoding="UTF-8"%> 
<%! 

// \b 是單詞邊界(連著的兩個(gè)(字母字符 與 非字母字符) 之間的邏輯上的間隔), 
// 字符串在編譯時(shí)會(huì)被轉(zhuǎn)碼一次,所以是 "\\b" 
// \B 是單詞內(nèi)部邏輯間隔(連著的兩個(gè)字母字符之間的邏輯上的間隔) 
String phoneReg = "\\b(ip(hone|od)|android|opera m(ob|in)i" 
+"|windows (phone|ce)|blackberry" 
+"|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp" 
+"|laystation portable)|nokia|fennec|htc[-_]" 
+"|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\\b"; 
String tableReg = "\\b(ipad|tablet|(Nexus 7)|up.browser" 
+"|[1-4][0-9]{2}x[1-4][0-9]{2})\\b"; 
Pattern phonePat = Pattern.compile(phoneReg, Pattern.CASE_INSENSITIVE); 
Pattern tablePat = Pattern.compile(tableReg, Pattern.CASE_INSENSITIVE); 

public boolean checkMobile(String userAgent){ 
if(null == userAgent){ 
userAgent = ""; 
} 
// 匹配 
Matcher matcherPhone = phonePat.matcher(userAgent); 
Matcher matcherTable = tablePat.matcher(userAgent); 
if(matcherPhone.find() || matcherTable.find()){ 
return true; 
} else { 
return false; 
} 
} 
%> 
<% 
String path = request.getContextPath(); 
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

// 
String userAgent = request.getHeader( "USER-AGENT" ).toLowerCase(); 

if(null == userAgent){ 
userAgent = ""; 
} 
if(checkMobile(userAgent)){ 
response.sendRedirect(basePath+"download.html"); 
//request.getRequestDispatcher("/download.html").forward(request,response); 
} else { 
response.sendRedirect(basePath+"index.html"); 
//request.getRequestDispatcher("/index.html").forward(request,response); 
} 
// 
%> 

<!DOCTYPE html> 
<html lang="zh-cn"> 
<head> 
<base href="<%=basePath%>"> 

<title>測(cè)試移動(dòng)設(shè)備跳轉(zhuǎn)</title> 
<meta http-equiv="pragma" content="no-cache"> 
<meta http-equiv="cache-control" content="no-cache"> 
<meta http-equiv="expires" content="0"> 
<meta http-equiv="keywords" content="測(cè)試,移動(dòng)設(shè)備,跳轉(zhuǎn)"> 
<meta http-equiv="description" content="測(cè)試移動(dòng)設(shè)備跳轉(zhuǎn)"> 
<!-- 
<link rel="stylesheet" type="text/css" href="styles.css"> 
--> 
</head> 

<body> 

<div id="pagecontent" style="min-height:500px;_height:500px;"> 

正在運(yùn)行！<br> 
</div> 

</body> 
</html> 