Joran XML Parser sometimes misses white space characters from element bodies ---------------------------------------------------------------------------- Key: LBCORE-134 URL: http://jira.qos.ch/browse/LBCORE-134 Project: logback-core Issue Type: Bug Components: Joran Affects Versions: 0.9.18 Reporter: Michael Franz Assignee: Logback dev list Priority: Critical I have the following example configuration: <property name="Layout1" value="[Layout1] "xyz""/> <appender name="LayoutTest_Console" class="ch.qos.logback.core.ConsoleAppender"> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>TRACE</level> </filter> <layout class="ch.qos.logback.classic.PatternLayout"> <Pattern> [%date{yyyy-MM-dd HH:mm:ss.SSS}] ${Layout1} [Layout2] "xyz"%n </Pattern> </layout> </appender> and this produces the following output: [2010-01-05 13:06:34.897] [Layout1] "xyz" [Layout2]"xyz" Notice the missing space between [Layout2] and "xyz" in the output that was present in the configuration. The investigation shows a bug in ch.qos.logback.core.joran.event.SaxEventRecorder: public void characters(char[] ch, int start, int length) { String body = new String(ch, start, length); if (body == null) { return; } // if the body string is null if (body != null) { String bodyTrimmed = body.trim(); if (bodyTrimmed.length() == 0) { return; } } SaxEvent lastEvent = getLastEvent(); if (lastEvent instanceof BodyEvent) { BodyEvent be = (BodyEvent) lastEvent; be.append(body); } else { saxEventList.add(new BodyEvent(body, getLocator())); } } In my case the following calls were made to this method: 1. "[%date{yyyy-MM-dd HH:mm:ss.SSS}] ${Layout1} [Layout2]" 2. " " 3. """ 4. "xyz" 5. """ 6. "%n". Note that the calls actually performed depend on the actual body content within the file and the actually used SAX parser (in my case com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser). So within the method the: // if the body string is null if (body != null) { String bodyTrimmed = body.trim(); if (bodyTrimmed.length() == 0) { return; } } must not occur if the last event was already a BodyEvent. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.qos.ch/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira