<dependency>
    <groupId>eu.bitwalker</groupId>
    <artifactId>UserAgentUtils</artifactId>
    <version>1.20</version>
</dependency>
import eu.bitwalker.useragentutils.Browser;
import eu.bitwalker.useragentutils.UserAgent;
import eu.bitwalker.useragentutils.Version;

//获取浏览器信息
Browser browser = UserAgent.parseUserAgentString(request.getHeader("User-Agent")).getBrowser();
//获取浏览器版本号
Version version = browser.getVersion(request.getHeader("User-Agent"));
String info = browser.getName() + "/" + version.getVersion();
System.out.println(info);