学步园

hibernate.cfg.xml的配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
	"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
	"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
	
<hibernate-configuration>
	<session-factory>
	<!-- 四个基本连接参数 -->
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="hibernate.connection.url">jdbc:mysql:///hibernate3</property>
		<property name="hibernate.connection.username">root</property>
		<property name="hibernate.connection.password">123</property>
		
		<!-- 配置数据库连接方言 -->
		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
		
		<!-- 自动建表 -->
		<property name="hibernate.hbm2ddl.auto">update</property>
		<!-- 在日志中输出sql -->
		<property name="hibernate.show_sql">true</property>
		<property name="hibernate.format_sql">true</property>
		
		<!-- 加载hbm -->
		<mapping resource="web/domain/Customer.hbm.xml"/>
		<mapping resource="web/domain/Book.hbm.xml"/>
	</session-factory>
</hibernate-configuration>

hbm的配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
    
<hibernate-mapping>
	<!-- 类与表的映射 -->
	<class name="web.domain.Customer" table="customer" catalog="hibernate3">
		<!-- 属性的映射 -->
		<!-- 主键 
			name:属性名（类中）
			column:数据表中名   可省略
			type:类型		可省略
		-->
		
		<id name="id" column="id" type="int">
			<!-- identity主键自增涨 -->
			<generator class="identity"></generator>
		</id>
		<!-- 普通属性 -->
		<property name="name" column="name" type="java.lang.String"></property> <!-- java类型 -->
		<property name="age" column="age" type="int"></property>
		<property name="city">
			<column name="city" sql-type="varchar(20)"></column><!-- sql类型 -->
		</property>
	</class>
</hibernate-mapping>