Hibernate配置

hibernate.cfg.xml:

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE hibernate-configuration PUBLIC  
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"  
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

	<session-factory>

		<!-- Database connection settings -->
		<property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
		<property name="connection.url">jdbc:mysql://localhost:3306/myblog?useUnicode=true&characterEncoding=UTF-8</property>
		<property name="connection.username">root</property>
		<property name="connection.password">123456</property>

		<!-- JDBC connection pool (use the built-in) -->
		<property name="connection.pool_size">1</property>

		<!-- SQL dialect -->
		<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>

		<!-- Enable Hibernate's automatic session context management -->
		<property name="current_session_context_class">thread</property>

		<!-- Disable the second-level cache -->
		<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

		<!-- Echo all executed SQL to stdout -->
		<property name="show_sql">true</property>

		<!-- Drop and re-create the database schema on startup -->
		<property name="hbm2ddl.auto">update</property>

		<mapping resource="tutorial/Content.hbm.xml" />

	</session-factory>

</hibernate-configuration>  

HibernateUtil.java:

package tutorial;  
  
import org.hibernate.SessionFactory;  
import org.hibernate.cfg.Configuration;  
  
public class HibernateUtil {  
  
    private static final SessionFactory sessionFactory = buildSessionFactory();  
  
    private static SessionFactory buildSessionFactory() {  
        try {  
            // Create the SessionFactory from hibernate.cfg.xml  
            return new Configuration().configure().buildSessionFactory();  
        }  
        catch (Throwable ex) {  
            // Make sure you log the exception, as it might be swallowed  
            System.err.println("Initial SessionFactory creation failed." + ex);  
            throw new ExceptionInInitializerError(ex);
        }  
    }  
  
    public static SessionFactory getSessionFactory() {  
        return sessionFactory;  
    }  
  
}  
需要用到session的方法基本都需要写上:
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();