当出现异常的时候，根据是否是debug来决定是否打印异常

LoggerDebugOrError.java

StringBuilder msg = new StringBuilder();
msg.append("Could not refresh JMS Connection for destination '");
msg.append(getDestinationDescription()).append("' - retrying in ");
msg.append(this.recoveryInterval).append(" ms. Cause: ");
msg.append(ex instanceof JMSException ? JmsUtils.buildExceptionMessage((JMSException) ex) : ex.getMessage());
if (logger.isDebugEnabled()) {
	logger.error(msg, ex);
}
else {
	logger.error(msg);
}