package priv.lwx.javaex.servlet_demo.web.servlet.request;/*** 获取请求头的数据** @author liaowenxiong* @date 2021/12/29 11:21*/
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.IOException;
import java.util.Enumeration;@WebServlet("/request_demo02")
public class RequestDemo02 extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// 获取所有的请求头名称Enumeration<String> headerNames = request.getHeaderNames();// 遍历取出每个请求头名称while (headerNames.hasMoreElements()) {String s = headerNames.nextElement();// 根据请求头名称获取对应的值String value = request.getHeader(s);System.out.println(s + " => " + value);}}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {}
}