hibernate.cfg.xml文件，必不可少的一个xml文件，上面附有数据库的用户名，密码，链接字符串，方言等信息，还包含映射的文件路径：

<?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"><!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration><session-factory><property name="dialect">org.hibernate.dialect.Oracle9Dialect</property><property name="connection.url">jdbc:oracle:thin:@127.0.0.1:1521:orcl</property><property name="connection.username">pro</property><property name="connection.password">pro</property><property name="connection.driver_class">oracle.jdbc.OracleDriver</property><property name="myeclipse.connection.profile">pro</property><property name="show_sql">true</property><property name="format_sql">true</property><property name="current_session_context_class">thread</property><mapping resource="org/entity/Dept.hbm.xml" /><mapping resource="org/entity/Emp.hbm.xml" /></session-factory></hibernate-configuration>