在Jboss中设置了控制台日志输出会导致JBoss死锁，因为Jboss会捕获控制台的输出，并使用log4j进行日志输出，如果在log4j中配置了ConsoleAppender，则会产生一个循环，导致死锁
WildFly, and JBoss AS 7/JBoss EAP 6, capture System.out and System.err and pass them through to a logger. When the ConsoleAppender also tries to write to System.out this stream has been captured so there could definitely be deadlocks