2.把hbm转化为DDL有两种方式:第一种是ExportDB,hibernate.cfg.xml

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<!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration><session-factory><property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property><property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property><property name="hibernate.connection.username">root</property><property name="hibernate.connection.password">root</property><property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property><property name="hibernate.show_sql">true</property><property name="hibernate.format_sql">true</property><mapping resource="com/bjpowernode/hibernate/User.hbm.xml"/><mapping resource="com/bjpowernode/hibernate/User2.hbm.xml"/></session-factory></hibernate-configuration>