sessionservicelifelistener.java

《j2ee开发全程实录》随书源码

package com.cownew.PIS.framework.server.lifeMgr;

import com.cownew.PIS.framework.common.exception.ServiceBeanInitException;
import com.cownew.PIS.framework.server.helper.ThreadVariableManager;
import com.cownew.PIS.framework.server.sessionMgr.SessionManager;
import com.cownew.ctk.common.StringUtils;

public class SessionServiceLifeListener implements IServiceLifeListener
{
	public void beforeInvoke(String sessionId)

	{
		// 对于登录服务等系统服务来说是无需而且也无法得到sessionId的,因为当时还没有一个sessionId
		// 所以要进行非空判断
		if (!StringUtils.isEmpty(sessionId))
		{
			SessionManager sessionMgr = SessionManager.getInstance();
			boolean valid = sessionMgr.isValid(sessionId);
			// 判断sessionId是否合法
			if (!valid)
			{
				throw new ServiceBeanInitException(
						ServiceBeanInitException.SESSIONIDINVALID);
			}

			sessionMgr.sessionVisit(sessionId);
			ThreadVariableManager.getInstance().setCurrentSessionId(sessionId);
		}
	}

	public void afterInvoke(String sessionId)
	{
		ThreadVariableManager.getInstance().clear();
	}

}