[jdom-interest] Help with JDOM and JSP

Thu Aug 10 07:48:23 PDT 2000

Hello all,
I am trying to parse and print the contents of an XML file using JSP;
however, I get the following exception:

Thu Aug 10 10:40:55 EDT 2000:<E> <HTTP> java.lang.NoSuchMethodError:
org.w3c.dom.DocumentType: method getPublicId()Ljava/lang/String; not found
        at org.jdom.input.DOMBuilder.buildTree(Compiled Code)
        at org.jdom.input.DOMBuilder.buildTree(Compiled Code)
        at org.jdom.input.DOMBuilder.build(DOMBuilder.java:230)
        at servlets.jsp._xml._loadxml._jspService(Compiled Code)
        at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
Code)
        at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
        at weblogic.servlet.JSPServlet.service(Compiled Code)
        at javax.servlet.http.HttpServlet.service(Compiled Code)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
Code)
        at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
        at
weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code)
        at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
        at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
        at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)

java.lang.NoSuchMethodError is a run-time Error.  The JSP code compiles, so
the appropriate packages (in this case jdom-b4.jar) are in my classpath.
Can anyone provide some insight into this error?

The following is the JSP page that receives the XML file.  The error occurs
on the following line: 

org.jdom.Document jdomDoc = (new DOMBuilder(false)).build(doc);

Here is the jsp page:

<html>
<body>
<table>
<tr>
<td><font face="arial,helvetica">
<%@ page language="java" %>
<%@ page import="org.w3c.dom.*" %>
<%@ page import="org.xml.sax.*" %>
<%@ page import="javax.xml.parsers.*" %>
<%@ page import="org.jdom.input.*" %>
<%
   try {
     com.oreilly.servlet.MultipartRequest multi = new
com.oreilly.servlet.MultipartReque
st(request, ".");

     Enumeration files = multi.getFileNames();
     while (files.hasMoreElements()) {
       String name = (String)files.nextElement();
       File f = multi.getFile(name);
       if (f != null) {
           DocumentBuilderFactory dbf = null;
           DocumentBuilder db = null;
           Document doc = null;
           try {
             dbf = DocumentBuilderFactory.newInstance();
             db = dbf.newDocumentBuilder();
           }
           catch(ParserConfigurationException pce) {
             pce.printStackTrace();
           }
           try {
             doc = db.parse(f);
           }
           catch(IOException ioe) {
             ioe.printStackTrace();
           }
           catch(SAXException saxe) {
             saxe.printStackTrace();
           }
           org.jdom.Document jdomDoc = (new DOMBuilder(false)).build(doc);
           try {
             org.jdom.Element element = jdomDoc.getRootElement();
             List children = element.getChildren();
             for (int i=0; i<children.size(); i++) {
               org.jdom.Element child = (org.jdom.Element)children.get(i);
               System.out.println("MessageReader:XML document contains node
" + child.ge
tName() + " value is " + child.getContent()); }
           }
           catch (org.jdom.NoSuchElementException nsee) {
             nsee.printStackTrace();
           }
       }
     }
   }
   catch(NullPointerException npe) {
     System.out.println(npe.toString());
   }
   catch(java.io.IOException ioe) {
     System.out.println(ioe.toString());
   } %>
</td>
</tr>
</table>
</form>
</body>
</html>

Thank you for your help.

Rob

____________________________________________
Robert Schiffer
F o r t  P o i n t  P a r t n e r s  I n c .
rschiffer at fortpoint.com
www.fortpoint.com