A.sendURL() B.redirectURL() C.sendRedirect() D.redirectResponse()
A.pageContext,request,application,session B.pageContext,application,session,request C.pageContext,request,session,application D.pageContext,session,request,application
A.setDataAttribute B.setAttribute C.以上都不是 D.setData
A.SUCCESS B.FAILURE C.ERROR D.INPUT
A.doGet() B.doPost() C.service() D.close()