clearshopcartaction.java

来自「使用hibernate+struts2+spring实现的在线购物系统」· Java 代码 · 共 30 行

package  cn.com.shoppingonline;

import java.util.Vector;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public final class ClearShopCartAction extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
			
        HttpSession session = request.getSession();
						
   		Vector shopCartList=(Vector)session.getAttribute(Constants.SHOPCART_KEY);
       	if(shopCartList!=null){
			shopCartList.clear();
			session.setAttribute(Constants.SHOPCART_KEY,shopCartList);
       	}
	   	return (mapping.findForward("toShopCartOk"));					
 	}
 	
}