[LOG4J2-3531] log4j2.xml cannot be parsed on WebSphere

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.17.2
• Fix Version/s: 2.18.0
• Component/s: Configurators
• Assignee: Piotr Karwasz
• Reporter: Simo Nikula
• Created: 07/Jun/22 11:19
• Updated: 27/Jun/22 19:16
• Resolved: 09/Jun/22 17:02

Description

Basically similar as LOG4J2-1127

ERROR StatusLogger Error parsing ..log4j2.xml
javax.xml.parsers.ParserConfigurationException: Feature 'http://apache.org/xml/features/xinclude' is not recognized.
   at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)
   at org.apache.logging.log4j.core.config.xml.XmlConfiguration.newDocumentBuilder(XmlConfiguration.java:193)
   at org.apache.logging.log4j.core.config.xml.XmlConfiguration.<init>(XmlConfiguration.java:91)
   at org.apache.logging.log4j.core.config.xml.XmlConfigurationFactory.getConfiguration(XmlConfigurationFactory.java:46)
   at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:559)
   at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:483)
   at org.apache.logging.log4j.core.config.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:325)
   at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:690)
   at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:711)
   at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:253)
   at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:155)
   at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
   at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
   at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:599)
   ...
ERROR StatusLogger No logging configuration   

Current retry does not cover this scenario.

           final DocumentBuilder documentBuilder = newDocumentBuilder(true);
            Document document;
            try {
                document = documentBuilder.parse(source);
            } catch (final Exception e) {
                // LOG4J2-1127
                final Throwable throwable = Throwables.getRootCause(e);
                if (throwable instanceof UnsupportedOperationException) {
                    LOGGER.warn(
                            "The DocumentBuilder {} does not support an operation: {}."
                            + "Trying again without XInclude...",
                            documentBuilder, e);
                    document = newDocumentBuilder(false).parse(source);
                } else {
                    throw e;
                }
            }

Issue Links

• links to: GitHub Pull Request #921