Hibernate----入门

1.建立数据表，然后建立实体，并且在实体包下建立映射配置文件，文件名一般以hbm.xml结尾

<?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 package="cn.ruanwenjun.domain">
<!-------------name表示实体类，table表示数据表名--------------------------------->
    <class name="Customer" table="cst_customer">
    <!-------------------主键名--------------------------------------------->
        <id name="cust_id" >
            <generator class="native"></generator>
        </id>

        <!-------------name是实体中的属性名，colum是对应的数据表中的列名-------------------->

        <property name="cust_name" column="cust_name"></property>
        <property name="cust_user_id" column="cust_user_id"></property>
        <property name="cust_create_id" column="cust_create_id"></property>
        <property name="cust_sorece" column="cust_sorece"></property>
        <property name="cust_industry" column="cust_industry"></property>
        <property name="cust_level" column="cust_level"></property>
        <property name="cust_linkman" column="cust_linkman"></property>
        <property name="cust_phone" column="cust_phone"></property>
        <property name="cust_mobile" column="cust_mobile"></property>
    </class>
</hibernate-mapping>

2.主配置文件，在src包下，名字为hibernate.cfg.xml

<?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 >

    <!--连接数据库的基本参数  -->
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql:///hibernate01</property>
        <property name="hibernate.connection.username">***</property>
        <property name="hibernate.connection.password">***</property>
        <!--------------------这是指方言类型------------------------>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>


        <property name="hibernate.format_sql">true</property>
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.hbm2ddl.auto">update</property>

        <!---------映射-------------->
        <mapping resource="cn/ruanwenjun/domain/Customer.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

3.代码

        Configuration con = new Configuration().configure();
        SessionFactory factory = con.buildSessionFactory();
        Session session = factory.openSession();
        Transaction transaction = session.beginTransaction();


        这里写实体对象创建代码
        session.save(实体);


        transaction.commit();
        session.close();
        factory.close();