https://forum.andowson.com/posts/list/5.page JForum - http://www.jforum.net 搜尋了一下，找到一篇文章，建議的作法是可以將session物件紀錄到ServletContext物件（其實就是一個Map物件）去，用sessionId當作key, session物件當作value，則要取回session時用ServletContext.getAttribute(sessionId)即可。而session進入和離開ServletContext的時間點可以用一個HttpSessionListener來管理，改寫sessionCreated、sessionDestroyed這兩個methods即可：

加入及移除session
[code]
@Override
public void sessionCreated(final HttpSessionEvent se) {
final HttpSession session = se.getSession();
final ServletContext context = session.getServletContext();
context.setAttribute(session.getId(), session);
}

@Override
public void sessionDestroyed(final HttpSessionEvent se) {
final HttpSession session = se.getSession();
final ServletContext context = session.getServletContext();
context.removeAttribute(session.getId());
}
[/code]

取回session物件
[code]
private HttpSession getSession(final String sessionId) {
final ServletContext context = getServletContext();
final HttpSession session = (HttpSession) context.getAttribute(sessionId);
return session;
}
[/code]

參考資料：
http://stackoverflow.com/questions/1499581/how-can-i-manually-load-a-java-session-using-a-jsessionid]]> https://forum.andowson.com/posts/preList/371/713.page https://forum.andowson.com/posts/preList/371/713.page GMT