推断client手机类型,并跳转到对应的app下载页面 _client

亦余心之所善兮，虽九死其犹未悔。这篇文章主要讲述推断client手机类型,并跳转到对应的app下载页面相关的知识，希望能为你提供帮助。
实现的原理,是检測浏览器的 USER-AGENT 这个header,然后依据正則表達式来确定client类型。
假设都不匹配，Fallback回退策略是显示相应的页面。让用户自己选择。
适合採用二维码扫描方式下载APP：

JSP版本号的代码例如以下所看到的:其它服务端版本号请百度搜索。

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< %@page import="java.util.regex.Matcher"%> < %@page import="java.util.regex.Pattern"%> < %@ page language="java" pageEncoding="UTF-8"%> < %! // \b 是单词边界(连着的两个(字母字符与非字母字符) 之间的逻辑上的间隔),字符串在编译时会被转码一次,所以是 "\\b" // \B 是单词内部逻辑间隔(连着的两个字母字符之间的逻辑上的间隔)String androidReg = "\\bandroid|Nexus\\b"; String iosReg = "ip(hone|od|ad)"; Pattern androidPat = Pattern.compile(androidReg, Pattern.CASE_INSENSITIVE); Pattern iosPat = Pattern.compile(iosReg, Pattern.CASE_INSENSITIVE); public boolean likeAndroid(String userAgent){ if(null == userAgent){ userAgent = ""; } // 匹配 Matcher matcherAndroid = androidPat.matcher(userAgent); if(matcherAndroid.find()){ return true; } else { return false; } } public boolean likeIOS(String userAgent){ if(null == userAgent){ userAgent = ""; } // 匹配 Matcher matcherIOS = iosPat.matcher(userAgent); if(matcherIOS.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(); System.out.println("userAgent: "+userAgent); if(null == userAgent){ userAgent = ""; } if(likeAndroid(userAgent)){ System.out.println("likeAndroid: "+true); response.sendRedirect("http://m.iyhjy.com/download.jsp?platform=android"); return; //request.getRequestDispatcher("/download.html").forward(request,response); } else if(likeIOS(userAgent)){ System.out.println("likeIOS: "+true); response.sendRedirect("http://itunes.apple.com/us/app/id714751061"); return; //request.getRequestDispatcher("/index.html").forward(request,response); } %> < !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> < html xmlns="http://www.w3.org/1999/xhtml"> < head> < meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> < meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> < title> 下载client - 永恒记忆< /title> < link href="https://www.songbingjia.com/android/css/style.css" rel="stylesheet" type="text/css" /> < /head> < body> < div class="p_down"> < div> < a href="https://www.songbingjia.com/android/index.html"> < img src="https://www.songbingjia.com/android/images/p_logo.png" class="p_logo" /> < /a> < /div> < a href="https://www.songbingjia.com/android/itms-services://?
action=download-manifest& url=http://m.iyhjy.com/upload/client/yhjyios.plist" class="apple download"> < img src="https://www.songbingjia.com/android/images/p_down_apple.png" /> < /a> < a href="http://m.iyhjy.com/download.jsp?platform=android"class="download"> < img src="https://www.songbingjia.com/android/images/p_down_and.png" /> < /a> < /div> < /body> < /html>

【推断client手机类型,并跳转到对应的app下载页面】