Details
Description
A configuration error can lead to a mysterious NPE:
java.lang.NullPointerException at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.setStatementObject(JdbcDatabaseManager.java:753) at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.setFields(JdbcDatabaseManager.java:739) at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.writeInternal(JdbcDatabaseManager.java:804) at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.writeThrough(JdbcDatabaseManager.java:880) at org.apache.logging.log4j.core.appender.db.AbstractDatabaseManager.write(AbstractDatabaseManager.java:264) at org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender.append(AbstractDatabaseAppender.java:110) at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156) at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129) at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120) at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84) at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:543) at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:502) at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:485) at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:460) at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:82) at org.apache.logging.log4j.core.Logger.log(Logger.java:161) at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2198) at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2152) at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2135) at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1836) at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1290)
Throw a AppenderLoggingException instead, like other places in this class.