A.getAttribute method of javax.servlet.Session B.getAttribute method of javax.servlet.http.HttpSession C.getAttribute method of javax.servlet.http.Session D.getAttribute method of javax.servlet.HttpSession
A.type="hide" B.type="text" C.type="password" D.type="hidden" E.type="file"
A.<%@ page errorPage="true" %> B.<%@ page info="error" %> C.<%@ page pageEndcoding="error" %> D.<%@ page isErrorPage="true" %>