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【自分用】サーブレットクラスの処理の転送

Posted at

【課題】乱数を発生させて、偶数が生成された場合はフォワードに、
奇数が生成された場合はリダイレクトに処理を転送する

【サーブレットクラス】


package p185;

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

@WebServlet("/P185")
public class P185 extends HttpServlet {
	private static final long serialVersionUID = 1L;
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		int Ran=(int)(Math.random()*10);
		if(Ran%2==1) {
			response.sendRedirect("/example/redirected62.jsp");
		}else{
			RequestDispatcher dispatcher =request.getRequestDispatcher("/forwarded62.jsp");
			dispatcher.forward(request,response);
		}
	}
}


a

【リダイレクト(jspファイル)】


<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>リダイレクトサンプル</title>
</head>
<body>
<h1>リダイレクトのサンプルを表示</h1>
</body>
</html>

【フォワード(jspファイル)】


<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>フォワードサンプル</title>
</head>
<body>
<h1>フォワードのサンプルを表示</h1>
</body>
</html>

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