package priv.lwx.javaex.servlet_demo.web.servlet.request;/*** 獲取referer，防止盜鏈** @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 {// 獲取refererString referer = request.getHeader("referer");System.out.println(referer);// 防止盜鏈if (referer != null) {if (referer.contains("/web-demo-03")) {// 應用內正常訪問System.out.println("播放電影");} else {// 應用外訪問System.out.println("想看電影嗎？來優酷吧！");}}}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {} }

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