▪️RedirectServlet.java
//サーブレット
package servlet;

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;
import javax.servlet.RequestDispatcher;

@WebServlet("/RedirectServlet")
public class RedirectServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        RequestDispatcher dispatcher = request.getRequestDispatcher("http://localhost:8080/Test05/Test05Servlet");
        dispatcher.forward(request, response);
    }
}

▪️Test05Servlet.java
package servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.*;
import java.util.*;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import static java.lang.System.*;

//Test02ServletはURLパターン

@WebServlet("/Test05Servlet")
public class Test05Servlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public Test05Servlet() {
        super();
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        // 運勢をランダムで決定
        String[] luckArray={"超スッキリ","スッキリ","最悪"};
        // 0以上3未満の整数を乱数で生成
        int index=(int)(Math.random()*3);String luck=luckArray[index];

        // 占い②
        Random rnd=new Random();String[]fortune={"凶","吉","大凶","末吉"};int num=rnd.nextInt(fortune.length);

        //fortunee-telling③
        String[]fortune2={"ill(凶)","good luck(吉)","worst luck(大凶)","uncertain luck(末吉)"};
        int index2=(int)(Math.random()*4);
        String luck2=fortune2[index2];

        // 実行日を取得
        Date date=new Date();SimpleDateFormat sdf=new SimpleDateFormat("yyyy/MM/dd");String today=sdf.format(date);

        // HTMLを出力
        response.setContentType("text/html; charset=UTF-8");PrintWriter out=response.getWriter();
        out.println("<html>");out.println("<head>");out.println("<title>スッキリ占い</title>");
        out.println("</head>");out.println("<body>");
        out.println("<p>"+today+"の運勢は"+luck+"です</p>");out.println("<p></p>");
        out.println("<p>"+today+"の運勢は"+fortune[num]+"です</p>");
        out.println("<p>"+"today's fortune is&nbsp" + luck2 + "." + "</p>");
//      out.println("<img src='more1.gif'>");
        out.println("</body>");out.println("</html>");
        String name = "港";
        out.println(name + "は、かっこいい？");
        response.setContentType("text/html; charset=UTF-8");

//      response.setContentType("image/gif");
        response.setContentType("text/html; charset=UTF-8");
        // 実行結果のHTMLを出力する処理(サーブレットクラスでHTMLを出力する処理)
        PrintWriter out1=response.getWriter();out1.println("<html>");out1.println("…");out1.println("</html>");
        // getWriter().append("Served at: ").append(request.getContextPath());
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

}