Caused by:org.hibernate.DuplicateMappingException:Duplicate class/entity/ mapping
1、错误描述
java.lang.ExceptionInInitializerError
Caused by:org.hibernate.InvalidMappingException:Could not parse mapping document from resource com/you/model/Monkey.hbm.xml
Caused by:org.hibernate.DuplicateMappingException:Duplicate class/entity/ mapping com.you.model.Monkey
2、错误原因
Configuration config = new Configuration();
config.addClass(Monkey.class);
ServiceRegistry serviceRegistry = new ServiceRegistry().applySettings(config.getProperties().buildServiceRegistry();
sessionFactory = config.buildSessionFactory(serviceRegistry);
3、解决办法
由于配置文件已经添加到Monkey.class，而config.addClass(Monkey.class);又重复添加，故需要将此注释掉
Configuration config = new Configuration();
//config.addClass(Monkey.class);
ServiceRegistry serviceRegistry = new ServiceRegistry().applySettings(config.getProperties().buildServiceRegistry();
sessionFactory = config.buildSessionFactory(serviceRegistry);
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