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Hi Kesav
You're exception is caused by a null String being
added to your dom4j document. When its written out to TrAX (JAXP) for XSLT its
causing the exception. More comments below...
----- Original Message -----
Sent: Thursday, September 13, 2001 1:02
AM
Subject: [dom4j-user] Help -
NullPointerException with DocumentSource
Hi,
I am using dom4j-1.0 version. I am trying to
apply xsl template to the dom4j Document.
I am getting the following error
java.lang.NullPointerException
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:149)
at
org.dom4j.io.SAXWriter.writeContent(SAXWriter.java:410)
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:505)
at
org.dom4j.io.SAXWriter.writeContent(SAXWriter.java:405)
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:505)
at
org.dom4j.io.SAXWriter.writeContent(SAXWriter.java:405)
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:505)
at
org.dom4j.io.SAXWriter.writeContent(SAXWriter.java:405)
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:505)
at
org.dom4j.io.SAXWriter.writeContent(SAXWriter.java:405)
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:505)
at
org.dom4j.io.SAXWriter.writeContent(SAXWriter.java:405)
at
org.dom4j.io.SAXWriter.write(SAXWriter.java:127)
at
org.dom4j.io.SAXWriter.parse(SAXWriter.java:387)
at
org.apache.xalan.transformer.TransformerImpl.transform(Unknown Source)
at
org.apache.xalan.transformer.TransformerImpl.transform(Unknown Source)
at
__jspPage1_login_jsp._jspService(__jspPage1_login_jsp.java:51)
at
com.orionserver.http.OrionHttpJspPage.service(Unknown Source)
at
com.evermind._ah._rad(Unknown Source)
at
com.evermind.server.http.JSPServlet.service(Unknown Source)
at
com.evermind._cxb._abe(Unknown Source)
at
com.evermind._cxb._uec(Unknown Source)
at
com.evermind._io._twc(Unknown Source)
at
com.evermind._io._gc(Unknown Source)
at
com.evermind._if.run(Unknown Source)
I saw in the mailing list that this NullPointer bug
has been fixed. My code is like the following, I am using this inside a
JSP.
Transformer transformer = TemplateCache.getTemplate("ItemsXsl");
Document doc = new InterfaceGenerator().generate(2, false);
transformer.transform(new DocumentSource(doc), new
StreamResult(out));
For the trasform I am getting the NullPointer
exception. My document is a proper document if I write to a file using
XMLWriter it writes properly to a file.
I made sure XMLWriter would gracefully handle null
Strings being in a dom4j document. I've just patched the SAXWriter to be the
same, that this exception will no longer happen.
When I tried to run from sample console java
program the same xml and xsl works properly.
I don't quite understand why it would run from the
command line - unless its the behaviour of your InterfaceGenerator
code?
James
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