不知道是哪里配置不对，跟着网上码的一个例子，求大神指教！
INFO | Successfully connected to tcp://localhost:61616
javax.jms.JMSSecurityException: User name [null] or password is invalid.
at org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:52)
at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1398)
at org.apache.activemq.ActiveMQConnection.ensureConnectionInfoSent(ActiveMQConnection.java:1501)
at org.apache.activemq.ActiveMQConnection.start(ActiveMQConnection.java:522)
at com.whitewind.activemq.JMSProducer.main(JMSProducer.java:42)
Caused by: java.lang.SecurityException: User name [null] or password is invalid.
at org.apache.activemq.security.JaasAuthenticationBroker.authenticate(JaasAuthenticationBroker.java:89)
at org.apache.activemq.security.JaasAuthenticationBroker.addConnection(JaasAuthenticationBroker.java:68)
at org.apache.activemq.broker.BrokerFilter.addConnection(BrokerFilter.java:97)
at org.apache.activemq.broker.MutableBrokerFilter.addConnection(MutableBrokerFilter.java:102)
at org.apache.activemq.broker.TransportConnection.processAddConnection(TransportConnection.java:817)
at org.apache.activemq.broker.jmx.ManagedTransportConnection.processAddConnection(ManagedTransportConnection.java:77)
at org.apache.activemq.command.ConnectionInfo.visit(ConnectionInfo.java:139)
at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:338)
at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:188)
at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
at org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:300)
at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:214)
at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:196)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.security.auth.login.FailedLoginException: user name is null
at org.apache.activemq.jaas.PropertiesLoginModule.login(PropertiesLoginModule.java:84)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at javax.security.auth.login.LoginContext.invoke(Unknown Source)
at javax.security.auth.login.LoginContext.access$000(Unknown Source)
at javax.security.auth.login.LoginContext$4.run(Unknown Source)
at javax.security.auth.login.LoginContext$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.invokePriv(Unknown Source)
at javax.security.auth.login.LoginContext.login(Unknown Source)
at org.apache.activemq.security.JaasAuthenticationBroker.authenticate(JaasAuthenticationBroker.java:84)
... 15 more
