Teach you how to use JS and JAVA to determine whether it is a WeChat browser

In response to project requirements, the mobile web page must be run in the WeChat browser. The first thing that comes to mind is to add js code to the page to verify whether it is the WeChat browser.

The code is as follows:

/*判断是不是微信浏览器*/ 
function isweixin(){ 
    var ua = navigator.userAgent.toLowerCase(); 
    if(ua.match(/MicroMessenger/i)=="micromessenger") { 
        return true; 
    } else { 
        return false; 
    } 
}
   
因为页面有些多,不愿意改动。于是打算用JAVA 过滤器实现
查找资料JAVA 通过
 request..getHeader("user-agent")  可以获取浏览器
String ua = ((HttpServletRequest) request).getHeader("user-agent") 
        .toLowerCase(); 
if (ua.indexOf("micromessenger") > 0) {// 是微信浏览器 
    validation = true; 
}

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