minusgoostag.java

一个简单的购物网站,包括购物车的实现

package csai.tag;
import javax.servlet.jsp.tagext.TagSupport;
import csai.bean.buyCar;
/**
 * @author dengziyun
 * 从购物车中拿出商品的标签处理类
 */
public class minusGoosTag   extends TagSupport{
	long goods_id;//商品的ID号
	int goods_count;//放入购物车的商品数量
	//----标签开始时调用此方法-------
	public int doStartTag(){
		//------从购物车中拿出------
		buyCar carTemp=(buyCar)pageContext.getSession().getAttribute("car");
		carTemp.minusGoods(new Long(goods_id),goods_count);
		pageContext.getSession().setAttribute("car",carTemp);
		return SKIP_BODY;
	}
	public int getGoods_count() {
		return goods_count;
	}
	public void setGoods_count(int goods_count) {
		this.goods_count = goods_count;
	}
	public long getGoods_id() {
		return goods_id;
	}
	public void setGoods_id(long goods_id) {
		this.goods_id = goods_id;
	}
}