1 servlet中的代码
package com.servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class Servlet6 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//防盗链
String referer=req.getHeader("Referer");
System.out.println(referer);
if(null==referer ){
resp.sendRedirect("http://wwww.baidu.com");
}else {
System.out.println("hello");
}
}
}
如果你直接访问该serlvet会跳转到baidu页面
如果你通过一个链接访问，就可以在当前Servlet中停留
t1.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<a href="/iteast1/Servlet6">aaa</a>
</body>
</html>
