3.用sendRedirect跳转：
response的方法：void sendRedirect(String url)，将页面重定向到指定的URL地址上。
例：3.3.1
package com;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class DeleteCookie extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.sendRedirect("http://localhost:8080/ServletHello/cookie.html");
System.out.println("ok");
}
}
更多请看：https://blog.csdn.net/qq_44638460/article/details/104233553
