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05.Servlet登录后自动跳转(自动刷新)

2014-05-11 11:23 218 查看

ServletDemo06:

package servlet;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.Random;

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

public class ServletDemo06 extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String data = "<meta http-equiv='refresh' content='3;url=/j2ee_day01/index.jsp'> 恭喜你登录成功，立即跳转！";

this.getServletContext().setAttribute("data", data);

this.getServletContext()
.getRequestDispatcher("/message.jsp")
.forward(request, response);

}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doGet(request, response);
}
}

message.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
String str = (String)application.getAttribute("data");
out.print(str);
%>
</body>
</html>

访问:http://localhost:8080/TestJ2EE/ServletDemo6

则会出现：恭喜你登录成功，立即跳转，然后地址栏变成http://localhost:8080/TestJ2EE/index.jsp，跳转到index,jsp页面

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