Log4j: warn no appenders cocould be found for logger (Org. hibernate. cfg. Environment ).
Log4j: Warn please initialize the log4j system properly.
Org. hibernate. mappingexception: Unsupported cascade style: save_update
At org. hibernate. Engine. cascadestyle. getcascadestyle (cascadestyle. Java: 269)
At org. hibernate. Mapping. Property. getcascadestyle (property. Java: 95)
At org. hibernate. tuple. propertyfactory. buildstandardproperty (propertyfactory. Java: 132)
At org. hibernate. tuple. entity. entitymetamodel. <init> (entitymetamodel. Java: 171)
At org. hibernate. persister. entity. abstractentitypersister. <init> (abstractentitypersister. Java: 434)
At org. hibernate. persister. entity. singletableentitypersister. <init> (singletableentitypersister. Java: 109)
At org. hibernate. persister. persisterfactory. createclasspersister (persisterfactory. Java: 55)
At org. hibernate. impl. sessionfactoryimpl. <init> (sessionfactoryimpl. Java: 226)
At org. hibernate. cfg. configuration. buildsessionfactory (configuration. Java: 1294)
At com. booklib. Service. businessService. <clinit> (businessService. Java: 27)
Exception in thread "Main" Java. Lang. nullpointerexception
At com. booklib. Service. businessService. savereaderandbookandborrowinfo (businessService. Java: 35)
At com. booklib. Service. businessService. Main (businessService. Java: 115)
Solution:
Org. hibernate. mappingexception: Unsupported cascade style: save_updateSave-update Error