Ajax技术实现级联菜单项

1.<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%@ page import="com.bjsxt.shopping.category.*, java.util.*"%>

<%
List categories = CategoryService.getInstance().getTopCategories();
%>

2GetCategoryChilds2.jsp页面代码

.<%@ page language="java" import="com.bjsxt.shopping.category.*, java.util.*" %>
<%
int id = Integer.parseInt(request.getParameter("id"));

List childs = CategoryService.getInstance().getChilds(id) ;
System.out.println(childs.size());
StringBuffer buf = new StringBuffer();

for(int i=0; iCategory c = childs.get(i);
buf.append("addNode(" + id + "," + c.getId() + ",'" + c.getName() + "','images/top.gif');" + "/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

response.getWriter().write(buf.toString());
%>