A.forward B.include C.useBean D.setProperty
A.HttpSession session=request.getSession(true) B.HttpSession session=request.getHttpSession(true) C.HttpSession session=response.getSession(true) D.HttpSession session=response.getHttpSession(true)
A.〈%@ page errorPage="true"%〉 B.〈%@ page isErrorPage="true"%〉 C.〈%@ page extends="javax.servlet.jsp.JspErrorPage"%〉 D.〈%@ page info="error"%〉