hibernateutil这段代码有什么问题吗，为什么总是出错？

"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">



org.hibernate.dialect.MySQLDialect
com.mysql.jdbc.Driver
jdbc:mysql://localhost:3307/many2one
root
******
true






public class HibernateUtils {
private static SessionFactory factory;

static{
try{
Configuration cfg = new Configuration().configure();
ServiceRegistry serviceRegistry= new StandardServiceRegistryBuilder().applySettings(cfg.getProperties()).build();
factory = cfg.buildSessionFactory(serviceRegistry);
}catch(Exception e){
e.printStackTrace();
}
}

public static SessionFactory getSessionFactory(){
return factory;
}

public static Session getSession(){
return factory.openSession();
}

public static void closeSession(Session session){
if(session != null){
if(session.isOpen())
session.close();
}
}
}

factory = cfg.buildSessionFactory(serviceRegistry);处会抛出异常

你的User或者Group实体类中缺少set方法，把get和set方法加全。

hibernate的mode配置l和数据库表的字段不对应，你仔细查查，