addtocaraction.java

网上购物系统 基于jsp实现 运行环境eclipse+My SQL+TomCat

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package book.jsj0707.struts.action;

import java.util.List;

import java.io.Serializable;     
import java.io.UnsupportedEncodingException;  

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.hibernate.HibernateException;

import book.jsj0707.dao.ShoppingcarDAO;
import book.jsj0707.entity.Book;
import book.jsj0707.entity.Shoppingcar;

/** 
 * MyEclipse Struts
 * Creation date: 01-11-2009
 * 
 * XDoclet definition:
 * @struts.action scope="request" validate="true"
 * @struts.action-forward name="ok" path="/user/list.jsp"
 */
public class AddToCarAction extends Action {
	/*
	 * Generated Methods
	 */
	ShoppingcarDAO shoppingcarDAO;
	
	public ShoppingcarDAO getShoppingcarDAO() {
		return shoppingcarDAO;
	}

	public void setShoppingcarDAO(ShoppingcarDAO shoppingcarDAO) {
		this.shoppingcarDAO = shoppingcarDAO;
	}

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		//addTOCar.do?bookid=??&bookname=??&bookprice=??
		Shoppingcar shoppingcar = new Shoppingcar();
		Book carbook = new Book(); 
		String carbookid=request.getParameter("bookid");
		String tempbookname = request.getParameter("bookname");
		String carbookprice =  request.getParameter("bookprice");
		String carbookname="";
		try {     
			carbookname = new String(tempbookname.getBytes("iso-8859-1"), "GBK");     
        } catch (UnsupportedEncodingException e) {     
            throw new HibernateException(e.getMessage());     
        }     
		
		if((carbookid == null||carbookid.length()==0)&&(carbookname == null ||carbookname.length()==0)&&(carbookprice == null ||carbookprice.length()==0))
		{
			return mapping.findForward("failed");
		}
		else
		{
			int numbers=1;
			String sessionid = request.getSession().getId();
			List carlist = shoppingcarDAO.findbySessionidBookid(sessionid,carbookid);
			carbook.setBookid(Long.parseLong(carbookid));
			shoppingcar.setSessionid(sessionid);
			shoppingcar.setBook(carbook);
			shoppingcar.setBookname(carbookname);
			shoppingcar.setPrice(Long.parseLong(String.valueOf(carbookprice)));
			if(carlist.size()>0)
			{
				Shoppingcar newcar = (Shoppingcar)carlist.get(0);
				numbers=newcar.getNumbers().intValue()+1;
				shoppingcar.setNumbers(Long.parseLong(String.valueOf(numbers)));
				shoppingcar.setId(newcar.getId());
				shoppingcarDAO.merge(shoppingcar);
				return mapping.findForward("ok");
			}
			else
			{
				shoppingcar.setNumbers(Long.parseLong(String.valueOf(numbers)));
				shoppingcarDAO.save(shoppingcar);
				return mapping.findForward("ok");
			}
		}
	}
}