package priv.lwx.javaex.servlet_demo.web.servlet.request;/*** 获取user-agent，判断浏览器版本** @author liaowenxiong* @date 2021/12/29 11:21*/import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Enumeration;@WebServlet(value = "/request_demo03")
public class RequestDemo03 extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// 获取user-agentString agent = request.getHeader("user-agent");// 判断浏览器的版本if (agent.contains("Chrome")) {// 谷歌System.out.println("谷歌浏览器");} else if (agent.contains("Firefox")) {// 火狐System.out.println("火狐浏览器");}}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {}
}