actionservlet.java

来自「jsp app +strus harmnate jdbc 必要的学习资料」· Java 代码 · 共 47 行

package com.tarena.action;

import java.io.IOException;

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

import com.tarena.m2.GameInfo;
import com.tarena.m2.NumberGuessGame;

public class ActionServlet extends HttpServlet {
	private NumberGuessGame game = new NumberGuessGame();

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		HttpSession session = request.getSession();
		GameInfo gameInfo = (GameInfo) session.getAttribute("gameInfo");
		synchronized (session) {
			if (gameInfo == null) {
				gameInfo = new GameInfo();
				session.setAttribute("gameInfo", gameInfo);
			}
		}

		String nextPage = "/m2/input.jsp";
		String guess = request.getParameter("guess");
		if (guess == null) {
			game.reset(gameInfo);
		} else {
			game.guess(Integer.parseInt(guess), gameInfo);
			if (gameInfo.isSuccess()) {
				nextPage = "/m2/success.jsp";
			}
		}
		getServletContext().getRequestDispatcher(nextPage).forward(request,
				response);
	}

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