TREES in JSP

how can i create Tree like structure in JSP.can i use swings.IF yes what can be the container.
I am trying to access database and show the data in TREE node like structure.
Rohit

<%@ page import="java.util.*"%>
<jsp:useBean id="TreeBean" class="resourceweb.TreeBean"/>
<html>
<head>
<title>Listing of resources Found</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<STYLE type=text/css>A:visited {
     COLOR: #cc0033
A:link {
     COLOR: #cc0033
A:active {
     COLOR: #cc0033
A:hover {
     COLOR: #ff0033
</STYLE>
<script language="JavaScript">

</SCRIPT>
</head>
<BODY bgColor=white onload=preload()>
<FONT face=Verdana size=2></FONT><FONT face=Verdana size=2>
<%
HttpSession session1 = request.getSession();
Vector v = (Vector)session1.getAttribute("treeResults");
String cat = (String)session1.getAttribute("catid");
String loc = (String)session1.getAttribute("location");
int i = 0;
int catid = 0;
int resid = 0;
resourceweb.TreeBean c = null;
String tempType = null;
GregorianCalendar now = new GregorianCalendar();
int mth = (now.get(Calendar.MONTH)) + 1;
int year = now.get(Calendar.YEAR);
%>
<%
//iterate through beans to display category.
c= (resourceweb.TreeBean)v.elementAt(i);
while (i < v.size())
     tempType = c.getResourceCategory();
     catid++;
     resid++;
     %>
     //this is where the top level stuff are
     <SPAN id=cat1<%=catid%> onclick=showhide(res<%=resid%>,cat<%=catid%>)
     style="CURSOR: hand; FONT-FAMILY: Verdana; FONT-WEIGHT: bold;">
          <FONT
               style="TEXT-DECORATION: none">
               
          <IMG id=cat<%=catid%> src="img/closedfolder.gif">
          </FONT>
     <%=c.getResourceCategory()%>
     </SPAN><BR>
     //this is where the second level stuff are.
     <SPAN id=res<%=resid%> style="DISPLAY: none">
     <%
     while((tempType.equals(c.getResourceCategory())) && (i < v.size()))
     %>
     <% if (i == (v.size() - 1)) { %>
          <IMG src="img/lastnode.gif">
          <% }
          else
          {%>
          <IMG src="img/node.gif">
          <% } %>
          <IMG src="img/doc.gif">
          <a href="../servlet/resourceweb.MthViewDispatcherServlet?Action=MthView&ResId=<%=c.getResourceId()%>&Mth=<%=mth%>&Year=<%=year%>&CatId=<%=cat%>&Location=<%=loc%>&View=Tree target=folderFrame"><%=c.getResourceName()%></a>
          <BR>
     <%
     ++i;
          if(i < v.size())
          c= (resourceweb.TreeBean)v.elementAt(i);
     }      %>
     </SPAN>
     <% } %>
</FONT>
</BODY>
</head>
<frameset rows="170,*" onLoad='initializeTree()'>
<frame name="banner" scrolling="no" noresize target="contents" src="Menu.html" frameborder="no">
<frameset cols="150,*">
<frame name="treeFrame" frameborder="no" src="blank.html">
<frame name="folderFrame" src="AllResources.html" frameborder="no">
</frameset>
</frameset>
</html>
This is the jsp that displays the tree, you can either manually code the SPAN_IDs to include watever u want in the tree or you can get the contents of the tree from the database.

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www.jenkov.dk

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EFP: Working with the new Taglibs - Part 3
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Edited by: Victor Kong on Jul 30, 2009 7:03 AM

TREES in JSP

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