getcataction.java

struts hibernate框架 商场买卖

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.shopping.struts.action.category;

import java.io.IOException;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.shopping.dao.UnifyDao;
import com.shopping.factory.DAOFactory;
import com.shopping.vo.Category;

/** 
 * MyEclipse Struts
 * Creation date: 05-01-2008
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class GetCatAction extends Action {
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		int id = Integer.parseInt(request.getParameter("id"));
		System.out.println(id);
		UnifyDao catDao = null;
		try {
			catDao = (UnifyDao) DAOFactory
					.getBean("com.shopping.dao.imp.CatDaoImp");
		} catch (InstantiationException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (IllegalAccessException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (ClassNotFoundException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}

		List<Category> childs = catDao.getTable(id) ;
		System.out.println(childs.size());
		StringBuffer buf = new StringBuffer();
		buf.append("document.Form1.child.length = " + (childs.size()+1) + ";\n");
		buf.append("document.Form1.child.options[0].value = '-1';\n");
		buf.append("document.Form1.child.options[0].text = '请选择!';\n");
		buf.append("document.Form1.child.selectedIndex = 0;\n");

		for(int i=0; i<childs.size(); i++) {
			Category c = childs.get(i);
			buf.append("document.Form1.child.options[" + (i+1) + "].value = '" + c.getId() + "';\n");
			buf.append("document.Form1.child.options[" + (i+1) + "].text = '" + c.getName() + "';\n");
		}

		response.setContentType("text/html;charset=gbk");
		response.setHeader("Cache-Control", "no-store"); //HTTP1.1
		response.setHeader("Pragma", "no-cache"); //HTTP1.0
		response.setDateHeader("Expires", 0); //prevents catching at proxy server

		try {
			response.getWriter().write(buf.toString());
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return null;
	}
}