Hibernate java.lang.NoClassDefFoundError: org/apache/commons/collections/地图/LRU

Hibernate java.lang.NoClassDefFoundError: org/apache/commons/collections/map/LRU

java.lang.NoClassDefFoundError: org/apache/commons/collections/map/LRUMap

?

问题原因：缺少jar文件commons-collections-3.1.jar