selectaction.java

郭克华j2ee高级框架实战教学视频源代码 这个是比较值得一看的 由郭克华博士在总结多年Java培训的基础上

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package prj5_3.action;

import java.util.ArrayList;

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 class SelectAction extends Action {

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		// TODO Auto-generated method stub
		String str = request.getParameter("ID");
		int id = Integer.parseInt(str);
		
		HttpSession session = request.getSession();
		ArrayList stus = (ArrayList)session.getAttribute("stus");
		Object selectedObj = stus.get(id);
		
		ArrayList cart = (ArrayList)session.getAttribute("cart");
		if(cart==null){
			cart = new ArrayList();
			session.setAttribute("cart", cart);
		}
		cart.add(selectedObj);
		
		return new ActionForward("/display.jsp");
	}
}