cartaction.java

来自「1.DATABASE目录下存放的是网上购书系统的数据库脚本文件以及相应的jdat」· Java 代码 · 共 31 行

package shopping.action;

import org.apache.struts.action.*;
import javax.servlet.http.*;
import java.util.List;
import java.util.ArrayList;
import shopping.form.InitialBookForm;
public class CartAction extends Action {
  public ActionForward perform(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
    System.out.println("cart action begin...");
    String buttonAddCart = httpServletRequest.getParameter("addcart");
    String buttonViewCart = httpServletRequest.getParameter("viewcart");
    InitialBookForm initialBookForm =(InitialBookForm)actionForm;
    ActionForward actionForward = null;
    HttpSession session = httpServletRequest.getSession(false);
    if(null!=buttonAddCart){
      System.out.println("in the add function...");
      List cart = null;
      cart =(List)session.getAttribute("cart");

      if(cart==null)
           cart = new ArrayList();
      cart.add(initialBookForm);
      session.setAttribute("cart", cart);
      actionForward = actionMapping.findForward("initial");
    }else if(null!=buttonViewCart){
      actionForward = actionMapping.findForward("viewcart");
    }
    return actionForward;
  }
}