activemq没有合适的日志构造函数

Question

这让我疯狂。我只是试图在Mac OSX 10.5.7上运行activemq。我有java版本1.5.0_19和activemq 5.2.0。下面是我运行bin/activemq时得到的异常。它似乎无法找到log4j，这是奇怪的考虑它与activemq并且肯定是在lib/optionals目录中。我能想到的唯一事情就是我在某个地方发生冲突，但我无法想象这是如何可能的。如果任何人有任何提示，我全部听到，Google搜索几乎没有产生相同的错误，并且具有确切错误的人没有解决方案。

> 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有冲突。当我从activemq lib /可选的删除log4j它的作品。

Answer 2

这看起来异常由NoClassDefFoundError为org.apache.log4j.Category所引起。您应该确保log4j jar包在类路径中。

编辑：有没有什么办法可以检查ACTIVEMQ_CLASSPATH变量的值？如果您通过设置变量的脚本来调用它，您可能需要深入研究脚本以确保它将所有您认为是的目录添加到类路径中。