[jdom-interest] Help with JDOM and JSP

Thu Aug 10 08:37:02 PDT 2000

You have the DOM Level 1 classes in your classpath before the DOM Level
2 classes. You problably have something like xml.jar in your servlet
engine classpath before xerces.jar - simply change this order and it
will work fine.

-Brett

Robert Schiffer wrote:
> 
> 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
> _______________________________________________
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-- 
Brett McLaughlin, Enhydra Strategist
Lutris Technologies, Inc. 
1200 Pacific Avenue, Suite 300 
Santa Cruz, CA 95060 USA 
http://www.lutris.com
http://www.enhydra.org