Grails通过sessionId获取session对象

Grails通过sessionId获取session对象思路：自定义一个类用来监听session，所有session存入map中，sessionId作为读取的key创建监听类 SessionTrackerpackage com.sessionimport org.springframework.beans.BeansExceptionimport org.springframework.context.ApplicationContextimport org.springframework.context.ApplicationContextAwareimport org.springframework.web.context.WebApplicationContextimport javax.servlet.http.HttpSessionimport javax.servlet.http.HttpSessionEventimport javax.servlet.http.HttpSessionListenerimport java.util.concurrent.ConcurrentHashMapimport java.util.concurrent.ConcurrentMapclass SessionTracker implements HttpSessionListener, ApplicationContextAware { private static final ConcurrentMap<String, HttpSession> sessions = new ConcurrentHashMap<String, HttpSession>(); void setApplicationContext(ApplicationContext applicationContext) throws BeansException { def servletContext = ((WebApplicationContext) applicationContext).getServletContext() servletContext.addListener(this); } void sessionCreated(HttpSessionEvent httpSessionEvent) { sessions.putAt(httpSessionEvent.session.id, httpSessionEvent.session) } void sessionDestroyed(HttpSessionEvent httpSessionEvent) { sessions.remove(httpSessionEvent.session.id) } HttpSession getSessionById(id) { sessions.get(id) }}在 grails-app/conf/resoures.groovy 中注册import com.session.SessionTracker// Place your Spring DSL code herebeans = { // 自定义session监听器 sessionTracker(SessionTracker)}获取sessionpackage com.geneeimport org.springframework.web.context.request.RequestContextHolderimport javax.servlet.http.HttpSessionclass HiController { // 注入监听对象 def sessionTracker def index() { // 获取session def sessionId = RequestContextHolder.currentRequestAttributes().getSessionId() println “原sessionId:$sessionId” // 根据sessionId获取session对象 HttpSession httpSession = sessionTracker.getSessionById(sessionId).getId() println “获取到session后:"+httpSession.getId() // 使session立即失效 sessionTracker.getSessionById(sessionId).invalidate() render sessionId }}