java - ActiveMQ:没有合适的日志构造函数

Question

我正在尝试在 Mac OSX 10.5.7 上运行 ActiveMQ。我有Java版本1.5.0_19和ActiveMQ 5.2.0。以下是运行 bin/activemq 时出现的异常。似乎无法找到 Log4j，这很奇怪，因为它与 ActiveMQ 一起提供，并且肯定位于 lib/optional 目录中。我唯一能想到的是我在某个地方发生了冲突，但我无法想象这怎么可能。如果有人有任何建议，我会洗耳恭听。谷歌搜索几乎没有产生同样错误的结果，而遇到确切错误的人却没有解决方案。

brad-robertsons-macbook-pro:apache-activemq-5.2.0
bradrobertson$ ./bin/activemq
ACTIVEMQ_HOME: /Users/bradrobertson/Java/apache-activemq-5.2.0
ACTIVEMQ_BASE: /Users/bradrobertson/Java/apache-activemq-5.2.0
Loading message broker from: xbean:activemq.xml
ERROR: java.lang.RuntimeException: Failed to execute start task. Reason: java.io.IOException: Could not load xbean factory:java.lang.ExceptionInInitializerError java.lang.RuntimeException: Failed to execute start task. Reason: java.io.IOException: Could not load xbean factory:java.lang.ExceptionInInitializerError
  at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:98)
  at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)
  at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:129)
  at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)
  at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:79)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.apache.activemq.console.Main.runTaskClass(Main.java:225)
  at org.apache.activemq.console.Main.main(Main.java:106)
Caused by: java.io.IOException: Could not load xbean factory:java.lang.ExceptionInInitializerError
  at org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:27)
  at org.apache.activemq.broker.BrokerFactory.createBrokerFactoryHandler(BrokerFactory.java:43)
  at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:70)
  at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54)
  at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:115)
  at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:74)
  ... 10 more
Caused by: java.lang.ExceptionInInitializerError
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
  at java.lang.Class.newInstance0(Class.java:350)
  at java.lang.Class.newInstance(Class.java:303)
  at org.apache.activemq.util.FactoryFinder.newInstance(FactoryFinder.java:55)
  at org.apache.activemq.util.FactoryFinder.newInstance(FactoryFinder.java:42)
  at org.apache.activemq.broker.BrokerFactory.createBrokerFactoryHandler(BrokerFactory.java:41)
  ... 14 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@abcc03 for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError:org/apache/log4j/Category) (Caused by org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@abcc03 for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category))
  at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
  at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
  at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
  at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
  at org.apache.activemq.xbean.XBeanBrokerFactory.<clinit(XBeanBrokerFactory.java:43)
  ... 23 more
Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@abcc03 for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category)
  at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:413)
  at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
  ... 27 more
Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Category
  at java.lang.Class.getDeclaredConstructors0(Native Method)
  at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
  at java.lang.Class.getConstructor0(Class.java:2671)
  at java.lang.Class.getConstructor(Class.java:1629)
  at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:410)
  ... 28 more
ERROR: java.lang.Exception: java.io.IOException: Could not load xbean factory:java.lang.ExceptionInInitializerError java.lang.Exception: java.io.IOException: Could not load xbean factory:java.lang.ExceptionInInitializerError
  at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:99)
  at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)
  at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:129)
  at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)
  at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:79)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:585)
  at org.apache.activemq.console.Main.runTaskClass(Main.java:225)
  at org.apache.activemq.console.Main.main(Main.java:106)
Caused by: java.io.IOException: Could not load xbean factory:java.lang.ExceptionInInitializerError
  at org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:27)
  at org.apache.activemq.broker.BrokerFactory.createBrokerFactoryHandler(BrokerFactory.java:43)
  at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:70)
  at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54)
  at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:115)
  at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:74)
  ... 10 more
Caused by: java.lang.ExceptionInInitializerError
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
  at java.lang.Class.newInstance0(Class.java:350)
  at java.lang.Class.newInstance(Class.java:303)
  at org.apache.activemq.util.FactoryFinder.newInstance(FactoryFinder.java:55)
  at org.apache.activemq.util.FactoryFinder.newInstance(FactoryFinder.java:42)
  at org.apache.activemq.broker.BrokerFactory.createBrokerFactoryHandler(BrokerFactory.java:41)
  ... 14 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@abcc03 for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category) (Caused by org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@abcc03 for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category))
  at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
  at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
  at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
  at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
  at org.apache.activemq.xbean.XBeanBrokerFactory.<clinit(XBeanBrokerFactory.java:43)
  ... 23 more
Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@abcc03 for org.apache.commons.logging.impl.Log4JLogger (Caused by java.lang.NoClassDefFoundError: org/apache/log4j/Category)
  at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:413)
  at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
  ... 27 more
Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Category
  at java.lang.Class.getDeclaredConstructors0(Native Method)
  at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
  at java.lang.Class.getConstructor0(Class.java:2671)
  at java.lang.Class.getConstructor(Class.java:1629)
  at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:410)
  ... 28 more

Answer 1

所以，这肯定是与另一个 log4j jar 文件冲突。我认为这可能是我的 eclipse 插件 log4j 发生冲突。当我从 activemq lib/Optional 中删除 log4j 时，它就可以工作了。