surecartaction.java

来自「利用Java开发的网上书店系统」· Java 代码 · 共 57 行

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.ascent.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.ascent.util.ShoppingCart;

/**
 * MyEclipse Struts Creation date: 08-01-2006
 * 
 * XDoclet definition:
 * 
 * @struts.action input="/viewCart.jsp" validate="true"
 */
public class SureCartAction extends BaseAction {
	/*
	 * Generated Methods
	 */

	/**
	 * Method execute
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		ActionMessages errors = new ActionMessages();
		ShoppingCart cart = null;
		/**
		 * 用户提交时判断购物车是否为空，若为空则提示错误 不能为空！
		 */
		cart = (ShoppingCart) request.getSession().getAttribute("cart");
		if (cart.getTotalPrice() == 0) {
			errors.add("cartempty", new ActionMessage("error.cart.empty"));
			saveErrors(request, errors);
			return new ActionForward(mapping.getInput());
		} else {
			return mapping.findForward("cart");
		}

	}
}