Response重定向
编写代码
RedirectServlet
package com.hao.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 RedirectServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.sendRedirect("image");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
编写映射
<servlet>
<servlet-name>RedirectServlrt</servlet-name>
<servlet-class>com.hao.servlet.RedirectServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RedirectServlrt</servlet-name>
<url-pattern>/redirect</url-pattern>
</servlet-mapping>
测试访问
实际应用
编写代码
RequestTest
package com.hao.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 RequestTest extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("进入了这个请求");
//处理请求
String username = req.getParameter("username");
String password = req.getParameter("password");
System.out.println(username+":"+password);
resp.sendRedirect("/response_download_war//Success.jsp");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
Success.jsp
<%--
Created by IntelliJ IDEA.
User: 15983
Date: 2021/7/22
Time: 19:20
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>Success</h1>
</body>
</html>
编写映射
<servlet>
<servlet-name>RequestTest</servlet-name>
<servlet-class>com.hao.servlet.RequestTest</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RequestTest</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
测试访问
点击提交后跳转到Success页面
