异常信息如下：
严重: Servlet.service() for servlet [admin] in context with path [/admin] threw exceptionjava.lang.NullPointerException ???at org.broadleafcommerce.common.audit.AbstractAuditableListener.setAuditData(AbstractAuditableListener.java:88) ???at org.broadleafcommerce.common.audit.AbstractAuditableListener.setAuditCreationData(AbstractAuditableListener.java:71) ???at org.broadleafcommerce.openadmin.audit.AdminAuditableListener.setAuditCreationAndUpdateData(AdminAuditableListener.java:33) ???at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ???at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ???at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ???at java.lang.reflect.Method.invoke(Method.java:606) ???at org.hibernate.ejb.event.ListenerCallback.invoke(ListenerCallback.java:48) ???at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:110) ???at org.hibernate.ejb.event.EntityCallbackHandler.preCreate(EntityCallbackHandler.java:79) ???at org.hibernate.ejb.event.EJB3MergeEventListener.saveWithGeneratedId(EJB3MergeEventListener.java:70) ???at org.hibernate.event.internal.DefaultMergeEventListener.saveTransientEntity(DefaultMergeEventListener.java:236) ???at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:216) ???at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:154) ???at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:76) ???at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:903) ???at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:887) ???at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:891) ???at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:889) ???at sun.reflect.GeneratedMethodAccessor394.invoke(Unknown Source) ???at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ???at java.lang.reflect.Method.invoke(Method.java:606) ???at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:344) ???at com.sun.proxy.$Proxy372.merge(Unknown Source) ???at sun.reflect.GeneratedMethodAccessor394.invoke(Unknown Source) ???at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ???at java.lang.reflect.Method.invoke(Method.java:606)原因：缺少 -javaagent:agents/spring-instrument.jar jvm参数，在tomcat启动时加上上述jvm参数即可，注意spring-instrument.jar 路径。
Broadleaf电商平台上传图片出现NullPointerException
原文地址：http://blog.51cto.com/13802307/2295953