session practise

HttpSessionsession=request.getSession();//得到一个session对象或创建一个

session.getId()//得到sessionID数

Integerid=(Integer)session.getValue(“id“)//检索出session的值并转化为整型 session.putValue(“ItemValue,itemName);//ItemValue必须不是must简单类型

???????? 我测试Session时用的：

//测试session??
//??? out.println("SessionID in Request:" + request.getRequestedSessionId());
//??? out.println("
");
//??? out.println("SessionID in Cookie:" + request.isRequestedSessionIdFromCookie());
//??? out.println("
");
//??? out.println("SessionID in URL:" + request.isRequestedSessionIdFromURL());
//??? out.println("
");
//??? out.println("SessionID Valid:" + request.isRequestedSessionIdValid());
//??? out.println("
");
//??? out.println("SessionID New:" + session.isNew());
//??? out.println("
");
//??? out.println("SessionID:" + session.getId());
//??? out.println("
");