fs

 <% 

    List<List> list = (List<List>)request.getAttribute("list");

    for(List li : list) {

        response.getWriter().write("主表：" + li.get(0).toString() +"<br>");

        List<Blog> list2 = (List<Blog>)li.get(1);

        for(int i=0; i< list2.size();i++){

       response.getWriter().write("一个字段：" + list2.get(i).getInt("order_id")+"<br>");

       response.getWriter().write("zi表："+i+"  ===" + list2.toString()+"<br>");

        }

        response.getWriter().write("<br>");

    }

  %>

  <%=list.get(2).size() %>

Map<Object, List<Blog>> map = new TreeMap<Object, List<Blog>>();

List<List> list = new ArrayList<List>();

String sql="select order_id, buyer_mem_name ,sale_date,total_money,buyer_mem_id from blog where buyer_mem_id=1011";

List<Blog> salsList=Blog.dao.find(sql);

System.out.println("list大小是:"+salsList.size()+"==");

for (Blog blog : salsList){

List list2 = new ArrayList();

    int orderId=blog.getInt("order_id");

    String selet="select b.PRODUCT_NAME,b.PRO_TYPE,b.SEND_QUANTITY from  blog a inner join  product_sale_details b on a.order_id =b.order_id where a.BUYER_MEM_ID=1011 and a.order_id="+orderId+"";

    List<Blog> alllist=Blog.dao.find(selet);

    //map.put(blog, alllist);

    list2.add(blog);

    list2.add(alllist);

    list.add(list2);

    System.out.println("----------0000" + alllist.size());

}

System.out.println(list.get(0).get(0).toString()+"---00-------");

System.out.println(list.get(1).get(1).toString()+"--11--------");

System.out.println(list.get(2).get(1).toString()+"---22-------");

setAttr("list", list);

render("blog.jsp");