大家来看个异常

[lionest]

java.lang.ExceptionInInitializerError Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) (Caused by org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException)) 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.catalina.startup.Bootstrap.(Bootstrap.java:53) Caused by: org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397) at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529) ... 4 more Caused by: java.lang.NullPointerException at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:374) ... 5 more Exception in thread "main"

[javafreshfish]

异常是空指针异常,可能是在你的代码里用了非法的前向引用,
最好把代码贴出来

[fengyaolong]

晕·

[lionest]

这个异常是我在用Lomboz启动Tomcat时　出现的　
为什么装了TomcatPlugin后　　Ｌomboz不能启动Tomcat？

[orangemike]

你是不是在用apache的logging输出log时，定义一个String，不同情况下这个String是不同的值，然后把他记录。但是你没有在初始化String logString = null。 因此在一些情况下，把没有初始化的logString 输出了。就出现了java.lang.NullPointerException。 纯猜。