已知表单有一个参数名为“userName”的参数,提交后,能够正确获得表单对象值的代码是:
A. request.getParameter(“userName”);
B. response.getParameter(“userName”);
C. request.getParameter(“username”);
D. request.getParameterValues(“userName”);
JSP内置对象request的getParameterValues()方法返回值是:
A. String[]
B. Object[]
C. String
D. Object
下列不能够将页面跳转到a.jsp的是:
A. response.sendRedirect(“a.jsp”);
B. request.getRequestDispatcher("a.jsp").forward(request,response);
C. request.setAttribute(“a”,”a.jsp”);
D. response.setHeader("refresh","2;URL=a.jsp");
在Servlet里,能正确获取application的语句是:
A. ServletContextapplication=(ServletContext)session.getServletContext();
B. ServletContextapplication=(ServletContext)request.getServletContext();
C. ServletContextapplication=(ServletContext)session.getServletContext(true);
D. ServletContextapplication=(ServletContext)response.getServletContext();