sessionreqreceiver.java

演示网站Portal单点登陆SSO的简单使用

/** 
 * Created by Guo Shengxing. 
 * User: dev
 * Date: 2007-8-30 
 * 服务器servlet，返回信息 
 */

import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Timer;

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

public class SessionReqReceiver extends HttpServlet {

	private static final long serialVersionUID = 5715637767863066238L;

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

		SSOSessionReqPdu ssoReq = new SSOSessionReqPdu();
		ssoReq.unpack(request.getInputStream());
		String timeout = ssoReq.getTimeout();
		String echoUrl = ssoReq.getEchoURL();
		HttpSession session = request.getSession();
		String sessionId = session.getId();
		if (!(timeout.equals("") && echoUrl.equals(""))) {
			// 设定定时任务，将定时任务timer放到session中，HttpSessionListener会在session销毁时撤销掉该定时任务
			Timer timer = new Timer();
			KeepSessionTask keepTask = new KeepSessionTask();
			keepTask.config(echoUrl);
			Integer interval = Integer.parseInt(timeout) * 1000 / 2;
			timer.schedule(keepTask, interval, interval);
			session.setAttribute("Timeout", timer);
		}

		/* 返回数据 */
		SSOSessionRspPdu ssoRsp = new SSOSessionRspPdu();
		ssoRsp.setSession(sessionId);
		ssoRsp.setResultCode("0");
		String respStr = ssoRsp.pack();
		DataOutputStream dataOut = new DataOutputStream(response
				.getOutputStream());
		dataOut.writeUTF(respStr);
		dataOut.flush();
		dataOut.close();
	}
}