Try the file below. You have to have the log4j 1.3 binaries in the classpath
(uses log4j 1.3's XmlDecoder).
Configure the app to use your log4j.xml file with whatever appenders you need
(use the -Dlog4j.debug=true and -Dlog4j.configuration=mylog4j.xml to get it
configured).
I tested it using a SocketAppender which sent events to Chainsaw V2.
The events I processed looked like this (no xml declaration or event set
section):
<log4j:event logger="org.apache.log4j.some-other.LogUI"
timestamp="1122046373629" sequenceNumber="1" level="INFO" thread="Thread-6">
<log4j:message><![CDATA[Using '' for auto-configuration]]></log4j:message>
<log4j:properties>
<log4j:data name="application" value="some-other-log"/>
<log4j:data name="hostname" value="some-other"/>
<log4j:data name="log4jid" value="1"/>
</log4j:properties>
</log4j:event>
<log4j:event logger="org.apache.log4j.some-other.help.HelpManager"
timestamp="1122046373754" sequenceNumber="2" level="WARN" thread="Thread-6">
<log4j:message><![CDATA[Could not find any local JavaDocs, you might want to
consider running 'ant javadoc'. The release version will be able to access
Javadocs from the Apache website.]]></log4j:message>
<log4j:properties>
<log4j:data name="application" value="some-other-log"/>
<log4j:data name="hostname" value="some-other"/>
<log4j:data name="log4jid" value="2"/>
</log4j:properties>
</log4j:event>
Here's the code:
-------------
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collection;
import java.util.Iterator;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.xml.XMLDecoder;
public class XmlFileReappender {
//initialize the log4j framework
private static final Logger logger =
LogManager.getLogger(XmlFileReappender.class.getName());
public static void main(String[] args) {
XMLDecoder decoder = new XMLDecoder();
Collection c;
try {
c = decoder.decode(new URL("file:///c:/sampleevents.xml"));
for (Iterator iter = c.iterator();iter.hasNext();) {
LoggingEvent evt = (LoggingEvent)iter.next();
Logger.getRootLogger().callAppenders(evt);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Scott
-----Original Message-----
From: Sven Abels [mailto:[EMAIL PROTECTED]
Sent: Fri 7/22/2005 7:03 AM
To: [email protected]
Cc:
Subject: Getting Log-Entries back with log4J
Hi guys,
I'm using log4J in a project and we use the XML output, which works fine.
However: We will now need a way to retrieve log entries again. Is there a
way to get back the log rentries with log4J without using an external XML
parser for our logfile?
Best greetings,
Sven
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