动态树形目录解决方案

主目录:
<%@  page  language="java"  contentType="text/html;charset=gb2312"%>
<%@  page  import="java.sql.Connection,com.data.DBConnect"%>
<html>
<head>
<title>网站结构</title>
<style  type="text/css">

</style>
   <script  language="JScript">
function  turnit(ss,ii,aa)
{
if  (ss.style.display=="none")
   {
       ss.style.display="";
       ii.src="/tree/t2.gif";
       aa.style.display="";
     }
else
   {
       ss.style.display="none";
       ii.src="/tree/t1.gif";
       aa.style.display="none";
     }
   }
   function  maingo(part_id,part_name)
   {
   parent.mainFrame.location="/part/part_util.jsp?part_id="+part_id;
   }
   function  mainto()
   {
   parent.mainFrame.location="/part/part_util.jsp?part_id=-1";
   }
</script>
</head>
<body  onLoad="mainto()">
网站结构
<%
Connection  con=new  DBConnect().getConn();
request.setAttribute("con",con);
request.setAttribute("part_main_id","-1");
request.getRequestDispatcher("part.jsp").include(request,response);
%>
</body>
</html>

//part.jsp
<%@  page  language="java"  contentType="text/html;charset=gb2312"%>
<%@  page  import="java.sql.Connection,com.model.*,com.database.*"%>
<table  width="100%"  border="0"  cellpadding="3"  cellspacing="2"  bordercolor="#FFFFFF"  bgcolor="#FFFFFF"  class="tr1">
   <%
           String  part_main_id=(String)request.getAttribute("part_main_id");//?鬣???ID
           String  imgnum=(String)request.getAttribute("imgstr");
           Connection  con=(Connection)request.getAttribute("con");
           PartDB  pd=new  PartDB();
           String  imgstr="";
           if(imgnum==null  |  |imgnum.equals(""))
           {
                       imgstr="";
           }
           PartVector  pv=pd.executeQueryMain(con,part_main_id);
           PartModel  pm=null;
           for(int  i=0;i<pv.size();i++)
           {
                       pm=pv.get(i);
                       String  part_id=pm.getPart_id();
                       String  part_name=pm.getPart_name();
                       String  issubschema=pm.getIssubschema();
                       if(issubschema!=null&&issubschema.equals("0")){//?T左???2  |囗
           %>
       <tr>
       <td  height="26"  bgcolor="#E1E1E1"  class="txt2"><%=imgstr%><img  src="/tree/treeimg/dot.gif"  width="12"  height="12"></td>
       <td  width="505"  bgcolor="#E1E1E1"  onClick="maingo('<%=part_id%>','<%=part_name%>')"  style="cursor:'hand'"><%=part_name%></td>
       </tr>
<%}else{//驞左???2  |囗
           String  content1="content"+part_id;
           String  img1="img"+part_id;
           String  aux1="aux"+part_id;%>
           <tr>

       <td  height="26"  bgcolor="#E1E1E1"  class="txt1"  style="cursor:'hand';"  onmouseup="turnit(<%=content1%>,<%=img1%>,<%=aux1%>);"  language="JScript">
           <%=imgstr%><img  src="/tree/t1.gif"  width="12"  height="12"  ID="<%=img1%>">
       </td>
       <td  bgcolor="#E1E1E1"  onClick="maingo('<%=part_id%>','<%=part_name%>')"  style="cursor:'hand'"><%=part_name%></td>
               </tr>
           <tr>

       <td  width="22"  height="26"  bgcolor="#E1E1E1"  class="tr1"  ID="<%=aux1%>"  STYLE="Display:'none';">
       </td>

       <td  bgcolor="#E1E1E1"  ID="<%=content1%>"  STYLE="Display:'none';">
           <%
           request.setAttribute("con",con);
           request.setAttribute("imgstr","1");
           request.setAttribute("part_main_id",part_id);
           request.getRequestDispatcher("/tree/part.jsp")  .include(request,response);
           %>
       </td>
           </tr>
           <%}
           }
           %>
</table>

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