On 01/10/10 16:31, Per Eriksson wrote:
Hi,
Some additional info: the API is in the classpath of the component, but
does not seem to be in the classpath of the
org.xml.sax.helpers.XMLReaderFactory. This seems to be sax specific.
Noticed the following in the component:
SAXParser asd = new org.apache.xerces.parsers.SAXParser(); // Works
XMLReader parser =
XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
// NoClassDefFoundError
The problem is probably that XMLReaderFactory.createXMLReader uses the
Java context class loader to instantiate the argument SAXParser class,
and the context class loader can be null, or any other class loader that
does not happen to have access to the extension's xercesImpl.jar. You
need something like (writing it down from memory):
ClassLoader old = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(
<your class>.class.getClassLoader());
try {
parser = XMLReaderFactory.createXMLReader(...);
} finally {
Thread.currentThread().setContextClassLoader(old);
}
Has been discuss extensively in the past, you can probably search the
d...@ooo and [email protected] mailing list archives for it.
-Stephan
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