showaction.java

用MVC实现JSP购物车案例说明详细设计方案

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.yourcompany.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.actions.DispatchAction;

import com.shop.model.MyCart;
import com.yourcompany.struts.form.ShowForm;

/** 
 * MyEclipse Struts
 * Creation date: 05-15-2008
 * 
 * XDoclet definition:
 * @struts.action path="/show" name="showForm" scope="request"
 */
public class ShowAction extends DispatchAction {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	/***
	 * @author 让痛苦痛苦
	 * @param 添加Session书
	 */
	public ActionForward showall(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		ShowForm showForm = (ShowForm) form;// TODO Auto-generated method stub
		String bookId=request.getParameter("BookId");
		//System.out.println("用户要购买"+bookId);
       MyCart mc=(MyCart)request.getSession().getAttribute("myCart");
       mc.addBook(bookId, "1"); 
       return mapping.findForward("show");
	}
	/***
	 * @author 让痛苦痛苦
	 * @param 删除不需要选择的书
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return
	 */
	public ActionForward delBook(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		ShowForm showForm = (ShowForm) form;// TODO Auto-generated method stub
		String bookId=request.getParameter("BookId");
		//System.out.println("用户要购买"+bookId);
       MyCart mc=(MyCart)request.getSession().getAttribute("myCart");
       mc.delBook(bookId);
       return mapping.findForward("show");
	}
	/**
	 * @author 让痛苦痛苦
	 * @param 清空Session
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return
	 */
	public ActionForward cleanBook(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		ShowForm showForm = (ShowForm) form;// TODO Auto-generated method stub
		
       MyCart mc=(MyCart)request.getSession().getAttribute("myCart");
       mc.clearMyCart();
       return mapping.findForward("show");
	}
	/**
	 * @author 让痛苦痛苦
	 * @param 修改数量
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return
	 */
	public ActionForward udateBook(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		ShowForm showForm = (ShowForm) form;// TODO Auto-generated method stub
	
       MyCart mc=(MyCart)request.getSession().getAttribute("myCart");
       String bookIds[] =request.getParameterValues("bookids");
       String bookNums[] =request.getParameterValues("booknum");
       for(int i=0;i<bookIds.length;i++)
       {
    	   mc.updateBook(bookIds[i], bookNums[i]);
       }
       return mapping.findForward("show");
	}
}