package priv.lwx.javaex.servlet_demo.web.servlet.request;/*** 获取referer，防止盗链** @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;@WebServlet(value = "/request_demo04")
public class RequestDemo04 extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// 获取refererString referer = request.getHeader("referer");System.out.println(referer);// 防止盗链if (referer != null) {if (referer.contains("/web-demo-03")) {// 应用内正常访问System.out.println("播放电影");} else {// 应用外访问System.out.println("想看电影吗？来优酷吧！");}}}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {}
}