how can i solve the problem,I can't find the answer in google.
Exception in thread "default-workqueue-2" java.lang.NullPointerException at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) Exception in thread "default-workqueue-7" java.lang.NullPointerException Exception in thread "default-workqueue-13" at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) Exception in thread "default-workqueue-17" at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) Exception in thread "default-workqueue-21" java.lang.NullPointerException Exception in thread "default-workqueue-11" Exception in thread "default-workqueue-19" at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) Exception in thread "default-workqueue-9" java.lang.NullPointerException at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) java.lang.NullPointerException at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) java.lang.NullPointerException at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) java.lang.NullPointerException at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662) java.lang.NullPointerException at org.apache.cxf.BusFactory.getThreadBusHolder(BusFactory.java:117) at org.apache.cxf.BusFactory.getAndSetThreadDefaultBus(BusFactory.java:202) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:64) at org.apache.cxf.transport.udp.UDPDestination$MCastListener$2.run(UDPDestination.java:106) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353) at java.lang.Thread.run(Thread.java:662)