你好，我也刚做了可简单的例子，可是写客户端时，老是报这样的错误
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.codehaus.xfire.DefaultXFire.<init>(DefaultXFire.java:37)
at org.codehaus.xfire.XFireFactory.<init>(XFireFactory.java:36)
at org.codehaus.xfire.XFireFactory.newInstance(XFireFactory.java:61)
at org.codehaus.xfire.service.binding.ObjectServiceFactory.<init>(ObjectServiceFactory.java:112)
at client.Client.main(Client.java:37)
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.codehaus.xfire.transport.DefaultTransportManager.<clinit>(DefaultTransportManager.java:26)
... 5 more
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)
... 9 more
Caused by: java.lang.NullPointerException
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:374)
... 10 more
难道还需要log吗，真是郁闷