根据USER-AGENT判断手机类型并跳转到相应的app下载页面
程序员文章站
2022-08-17 19:36:19
实现的原理,是检测浏览器的 user-agent 这个header,然后根据正则表达式来确定客户端类型。
如果都不匹配,fallback回退策略是显示对应的页面,让用户自...
实现的原理,是检测浏览器的 user-agent 这个header,然后根据正则表达式来确定客户端类型。
如果都不匹配,fallback回退策略是显示对应的页面,让用户自己选择。
适合采用二维码扫描方式下载app:
jsp版本的代码如下所示:其他服务端版本请百度搜索。
<%@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>下载客户端 - 永恒记忆</title> <link href="css/style.css" rel="stylesheet" type="text/css" /> </head> <body> <div class="p_down"> <div> <a href="index.html"> <img src="images/p_logo.png" class="p_logo" /> </a> </div> <a href="itms-services://?action=download-manifest&url=http://m.iyhjy.com/upload/client/yhjyios.plist" class="apple download"><img src="images/p_down_apple.png" /></a> <a href="http://m.iyhjy.com/download.jsp?platform=android" class="download"><img src="images/p_down_and.png" /></a> </div> </body> </html>