[Java] java request.getHeader(＂user-agent＂)获取浏览器信息的方法

string useragent = request.getheader("user-agent");

user-agent:mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/58.0.3029.110 safari/537.36

<!-- https://mvnrepository.com/artifact/eu.bitwalker/useragentutils -->
<dependency>
  <groupid>eu.bitwalker</groupid>
  <artifactid>useragentutils</artifactid>
  <version>1.20</version>
</dependency>

useragent useragent = useragent.parseuseragentstring(request.getheader("user-agent")); 
browser browser = useragent.getbrowser(); 
operatingsystem os = useragent.getoperatingsystem();