package org.jeecgframework.core.util; ???import java.util.HashMap; ?import java.util.Map; ?import javax.servlet.http.HttpServletRequest; ?import javax.servlet.http.HttpSession; ?import org.springframework.web.context.request.RequestContextHolder; ?import org.springframework.web.context.request.ServletRequestAttributes; ???/** * @ClassName: ContextHolderUtils ?* @Description: TODO(上下文工具类) ?* @author ?张代浩 ?* @date 2012-12-15 下午11:27:39 ?* ?*/ ?public class ContextHolderUtils { ?????/** ?????* SpringMvc下获取request ?????* ??????* @return ?????*/ ?????public static HttpServletRequest getRequest() { ?????????HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); ?????????return request; ???????} ???????/** ?????* SpringMvc下获取session ?????* ??????* @return ?????*/ ?????public static HttpSession getSession() { ?????????HttpServletRequest request = getRequest(); ?????????String tempSessionId = request.getParameter("sessionId"); ?????????HttpSession session = request.getSession(); ?????????String sessionId = session.getId(); ?????????if(StringUtil.isNotEmpty(tempSessionId) && !tempSessionId.equals(sessionId)){ ?????????????sessionId = tempSessionId; ?????????????if(sessionMap.containsKey(sessionId)){ ?????????????????session = sessionMap.get(sessionId); ?????????????} ?????????} ?????????if(!sessionMap.containsKey(sessionId)){ ?????????????sessionMap.put(sessionId, session); ?????????} ?????????return session; ?????} ?????????????private static final Map<String, HttpSession> sessionMap = new HashMap<String, HttpSession>(); ???????????public static HttpSession getSession(String sessionId){ ?????????HttpSession session = sessionMap.get(sessionId); ?????????return session == null ? getSession() : session; ?????} ???????????public static void removeSession(String sessionId){ ?????????if(sessionMap.containsKey(sessionId)){ ?????????????sessionMap.remove(sessionId); ?????????} ?????} ?获得HttpServletRequest 和HttpSession对象
原文地址：https://www.cnblogs.com/jpfss/p/9081531.html