eclipse如何建request？

java怎么創(chuàng)建Reques步驟如下：HttpServletRequest request = servletActionContext.getRequest();ServletContext servletContext = ServletActionContext.getServletContext();request.setAttribute(＂req＂，＂請求范圍屬性＂)；request.getSession().setAttribute(＂ses＂，＂會話范圍屬性＂)；servletContext.setAttribute(＂app＂，＂應(yīng)用范圍屬性＂)...