ServiceMix - [Quickstart]6.我遇到的几个问题

这是我在阅读与试验过程中所遇到的几个问题。希望对你有所帮助。

1. 运行activemq:list指令时发生错误。

karaf@root> activemq:listConnecting to JMX URL: service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmiERROR: java.lang.RuntimeException: Failed to execute list task. Reason: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.NameNotFoundException: jmxrmijava.lang.RuntimeException: Failed to execute list task. Reason: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.NameNotFoundException: jmxrmi        at org.apache.activemq.console.command.ListCommand.runTask(ListCommand.java:53)        at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)        at org.apache.activemq.console.command.AbstractJmxCommand.execute(AbstractJmxCommand.java:316)        at org.apache.activemq.karaf.commands.ActiveMQCommandSupport.doExecute(ActiveMQCommandSupport.java:46)        at org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:38)        at org.apache.felix.gogo.commands.basic.AbstractCommand.execute(AbstractCommand.java:35)        at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)        at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:474)        at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:400)        at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)        at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)        at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)        at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:89)        at org.apache.karaf.shell.console.jline.Console.run(Console.java:218)        at java.lang.Thread.run(Thread.java:662)Error executing command: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.NameNotFoundException: jmxrmi

修改<SERVICEMIX_HOME>/etc/activemq-broker.xml文件中：

        <!-- Use the following to configure how ActiveMQ is exposed in JMX -->        <managementContext>            <managementContext createConnector="false"/>        </managementContext>

将false改成true。

不需重启，ServiceMix是热启动。再次执行命令

2.不知道指令怎么使用，是什么含义怎么办？

使用help指令会得到非常详细的解释。

例如：

karaf@root> helq activemq:listCommand not found: helqkaraf@root> help activemq:listTask Usage: Main list [list-options]Description:  Lists all available broker in the specified JMX context.List Options:    --jmxurl <url>             Set the JMX URL to connect to.    --pid <pid>                Set the pid to connect to (only on Sun JVM).    --jmxuser <user>           Set the JMX user used for authenticating.    --jmxpassword <password>   Set the JMX password used for authenticating.    --jmxlocal                 Use the local JMX server instead of a remote one.    --version                  Display the version information.    -h,-?,--help               Display the stop broker help information.

3.如何查看前面例子中发送给activeMQ queue中消息？

使用指令

activemq:browse --amqurl tcp://localhost:61616 events