问题
Getting following exception while trying to post a Java object. Any pointers are appreciated.
> 2015-12-26 23:06:32,876 | WARN | stackref=151df5b0a0f
> java.lang.NullPointerException at
> org.apache.activemq.apollo.broker.QueueEntry$Swapped.swapped_in(QueueEntry.scala:809)
> at
> org.apache.activemq.apollo.broker.QueueEntry$Swapped$$anonfun$swap_in$1$$anonfun$apply$2.apply$mcV$sp(QueueEntry.scala:764)
> at
> org.apache.activemq.apollo.util.DeferringDispatched$$anon$1.run(Dispatched.scala:38)
> at
> org.apache.activemq.apollo.util.DeferringDispatched$$anonfun$dispatch_queue_task_source$1$$anonfun$apply$mcV$sp$1.apply(Dispatched.scala:45)
> at
> org.apache.activemq.apollo.util.DeferringDispatched$$anonfun$dispatch_queue_task_source$1$$anonfun$apply$mcV$sp$1.apply(Dispatched.scala:45)
> at scala.collection.immutable.List.foreach(List.scala:309) at
> scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32)
> at scala.collection.mutable.ListBuffer.foreach(ListBuffer.scala:45)
> at
> org.apache.activemq.apollo.util.DeferringDispatched$$anonfun$dispatch_queue_task_source$1.apply$mcV$sp(Dispatched.scala:45)
> at
> org.fusesource.hawtdispatch.package$$anon$4.run(hawtdispatch.scala:357)
> at
> org.fusesource.hawtdispatch.internal.HawtCustomDispatchSource$1.run(HawtCustomDispatchSource.java:127)
> at
> org.fusesource.hawtdispatch.internal.SerialDispatchQueue.run(SerialDispatchQueue.java:100)
> at
> org.fusesource.hawtdispatch.internal.pool.SimpleThread.run(SimpleThread.java:77)
回答1:
There has been little to no development on ActiveMQ Apollo in quite some time and doubt there will be any to come. You should use ActiveMQ 5 or try out ActiveMQ Artemis to see if that meets your needs.
来源：https://stackoverflow.com/questions/34474791/apollo-activemq-amqp-nullpointerexception