java.lang.ClassNotFoundException: org.apache.commons.discovery.tools.DiscoverSingleton

 java.lang.ClassNotFoundException: org.apache.commons.discovery.tools.DiscoverSingleton

org.apache.axis.client.Service service = new org.apache.axis.client.Service();这句话总报这个错，axis,jaxrpc的jar都加了，是还缺少什么包啊

 

缺少commons-discovery-0.2.jar