addbookaction.java

首先确保MySQL4.0数据库已经正确安装

package edu.jnestore.action;

import org.apache.struts.action.*;
import javax.servlet.http.*;
import edu.jnestore.common.*;
import edu.jnestore.beans.Book;
import edu.jnestore.service.*;
/**
 *AddBookAction处理向购物车添加商品的请求
 */
public class AddBookAction extends Action
{
  public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse)
  {
    HttpSession session = httpServletRequest.getSession();
    AddBookActionForm addBookActionForm = (AddBookActionForm)actionForm;
    
    //获得业务操作对象
    IBizService bizservice = BizServiceFactory.createService();
    
    if(addBookActionForm.getBookISBNID()!=null && !addBookActionForm.getBookISBNID().trim().equals(""))
    {
      //判断当前用户是否已经登录
      if(!edu.jnestore.service.CheckLogin.getInstance().isLogin(session))
      {
        return actionMapping.findForward("notLogon");
      }
      //从session对象中取得与当前用户对应的User对象
      User user = (User)session.getAttribute(Constants.USER_KEY);
      try
      {
        Book book = bizservice.getBookWithISBN(addBookActionForm.getBookISBNID());
        if(book != null)
        {
          //向user对象中添加商品
          user.addBook(book);
        }
      }
      catch(Exception e)
      {
        e.printStackTrace();
      }
    }
    return actionMapping.findForward("mainmenu");
  }
}