HttpServletResponse setHeader 定时跳转至当前工程的其他页面

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工程目录结构



web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

<servlet>
<servlet-name>MyServlet</servlet-name>
<servlet-class>jizuiku.web.servlet.MyServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>MyServlet</servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>

<servlet>
<servlet-name>MyServletShowHello</servlet-name>
<servlet-class>jizuiku.web.servlet.MyServletShowHello</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>MyServletShowHello</servlet-name>
<url-pattern>/MyServletShowHello</url-pattern>
</servlet-mapping>

</web-app>

Servlet类代码

package jizuiku.web.servlet;

import java.io.IOException;
import java.nio.charset.Charset;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* HttpServletResponse setHeader 定时跳转至当前工程的其他页面
*
* @author 给最苦
* @version V17.10.25
*/
public class MyServlet extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = 1L;

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
// 如果跳转的页面在本工程中的话，那么URL的指定格式就要发生变化

/* 5秒钟 + 分号 + /项目名  + servlet路径
* /项目名  + servlet路径    = 请求url
* servlet路径 在web.xml中进行设定
*/
response.setHeader("Refresh", "5;URL=/Day10/MyServletShowHello");
}

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub

}

}

跳转后 到达的Servlet类

package jizuiku.web.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* MyServlet 5秒钟后，跳到这个页面中。
*
* @author 给最苦
* @version V17.10.25
*/
public class MyServletShowHello extends HttpServlet{

/**
*
*/
private static final long serialVersionUID = 1L;

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
// 写点东西。
PrintWriter pw = resp.getWriter();
pw.print("hello");
}

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(req, resp);
}

}

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