Servlet怎么使用jsp的内置对象

//out对象
		PrintWriter out=response.getWriter();
		//application对象
		ServletContext application=request.getServletContext();
		//session对象
		HttpSession session=request.getSession();
		//pageContext是jsp特有的，在Servlet无法获取
		//config对象
		ServletConfig config=this.getServletConfig();