webcontexthelper.java

《j2ee开发全程实录》随书源码

package com.cownew.PIS.framework.web.helper;

import java.util.Date;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import com.cownew.PIS.base.permission.common.UserInfo;
import com.cownew.PIS.framework.common.services.ICommonService;

public class WebContextHelper
{
	/**
	 * 从request得到应用SessionId
	 * @param request
	 * @return
	 */
	public static String getSessionId(HttpServletRequest request)
	{
		HttpSession session = request.getSession();
		return (String) session.getAttribute(WebConstant.SESSIONID);
	}

	/**
	 * 得到当前登录用户
	 */
	public static UserInfo getCurrentUser(HttpServletRequest request)
	{

		HttpSession session = request.getSession();
		return (UserInfo) session.getAttribute(WebConstant.CURUSERINFO);
	}
	
	/**
	 * 得到服务器时间
	 * @param request
	 * @return
	 */
	public static Date getServerNow(HttpServletRequest request)
	{
		ICommonService cs = (ICommonService) WebEndServiceLocator
				.getService(request,ICommonService.class);
		return cs.now();
	}
}