package cn.itcast.servlet.web;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
?* 重定向
?* Servlet implementation class ResponseDemo1
?*/
@WebServlet("/ResponseDemo1")
public class ResponseDemo1 extends HttpServlet {
?? ?private static final long serialVersionUID = 1L;
????? ?
??? /**
???? * @see HttpServlet#HttpServlet()
???? */
??? public ResponseDemo1() {
??????? super();
??????? // TODO Auto-generated constructor stub
??? }

?? ?/**
?? ? * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
?? ? */
?? ?protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
?? ??? ?System.out.println("demo1...........");
?? ??? ?//訪問/ResponseDemo1，會自動跳轉(zhuǎn)到/ResponseDemo2資源
//?? ??? ?//1.設(shè)置狀態(tài)碼為302
//?? ??? ?response.setStatus(302);
//?? ??? ?//2.設(shè)置響應(yīng)頭location
//?? ??? ?response.setHeader("location", "/Project3/ResponseDemo2");
?? ??? ?//存值
?? ??? ?request.setAttribute("msg", "response");
?? ??? ?//簡單的重定向方法
?? ??? ?response.sendRedirect("/Project3/ResponseDemo2");
//?? ??? ?response.sendRedirect("https://www.baidu.com/baidu?tn=monline_7_dg&ie=utf-8&wd=%E7%99%BE%E5%BA%A6+%E6%9C%80%E4%BD%B3%E5%A5%B3%E5%A9%BF%E5%85%A8%E6%96%87%E5%85%8D%E8%B4%B9+%E9%98%85%E8%AF%BB%E5%B0%8F%E8%AF%B4%E6%9C%80%E6%96%B0");
?? ??? ?
?? ?}

?? ?/**
?? ? * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
?? ? */
?? ?protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
?? ??? ?// TODO Auto-generated method stub
?? ??? ?doGet(request, response);
?? ?}

}

package cn.itcast.servlet.web;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
?* Servlet implementation class ResponseDemo1
?*/
@WebServlet("/ResponseDemo2")
public class ResponseDemo2 extends HttpServlet {
?? ?private static final long serialVersionUID = 1L;
????? ?
??? /**
???? * @see HttpServlet#HttpServlet()
???? */
??? public ResponseDemo2() {
??????? super();
??????? // TODO Auto-generated constructor stub
??? }

?? ?/**
?? ? * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
?? ? */
?? ?protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
?? ??? ?System.out.println("demo2...........");
?? ??? ?Object msg = request.getAttribute("msg");
?? ??? ?System.out.println(msg);
?? ?}

?? ?/**
?? ? * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
?? ? */
?? ?protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
?? ??? ?// TODO Auto-generated method stub
?? ??? ?doGet(request, response);
//?? ??? ?this.doGet(request, response);
?? ?}

}