J2EE中,Servlet API 为使用Cookie,提供了哪个类?(选1项)
A. javax.servlet.http.Cookie
B. javax.servlet.http.HttpCookie
C. javax.servlet. Cookie
D. javax.servlet.http. HttpCookie
获取Cookie [ ]所用到的方法是哪个?(选1项)
A. request.getCookies()
B. request.getCookie()
C. response..getCookies()
D. response..getCookie()
以下哪个方法一定可以获取到代表当前会话的Session对象? (选1项)
A. request.getSession();
B. request.getSession(false);
C. new HttpSession();
D. HttpSession.newInstance(request);
以下哪个方法可用于检索session属性userid的值?(选1项)
A. session. getAttribute(“userid”);
B. session. setAttribute(“userid”);
C. request. getParameter(“userid”);
D. request. getAttribute(“userid”);