[QPID-5569] NullPointerException if message prop's userId is null

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.18
• Fix Version/s: 0.27
• Component/s: JMS AMQP 0-x
• Assignee: Robert Godfrey
• Reporter: Nathan Jensen
• Created: 20/Feb/14 15:25
• Updated: 03/Jun/14 15:34
• Resolved: 20/Feb/14 16:01

Description

Some JMS applications will try to retrieve the userID from a message, and the qpid client may throw a NullPointerException if that is not set on the message. Ideally it should just return null if there is no userId set. Specifically in org.apache.qpid.client.message.AMQMessageDelegate_0_10.java, the method getStringProperty(String) checks if the propertyName equals JMSXUserID and if so returns a new String(_messageProps.getUserId()). Therefore if there is no userId set it can attempt String(null) which causes a NullPointerException.

Also note that other properties in this method are specifically checking for null to avoid an exception like this.