hibernate4.3.5.Final入门1

使用maven管理项目

1.依赖包  

<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.3.5.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-c3p0</artifactId>
            <version>4.3.5.Final</version>
        </dependency>
    </dependencies>

2.配置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>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://127.0.0.1:3306/cl?useUnicode=true&amp;characterEncoding=UTF-8&amp;autoReconnect=true</property>
        <property name="connection.username">root</property>
        <property name="connection.password"></property>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
        <property name="hibernate.c3p0.min_size">1</property>
        <property name="hibernate.c3p0.max_size">3</property>
        <property name="current_session_context_class">thread</property>
        <property name="show_sql">true</property>
        <property name="hbm2ddl.auto">update</property>
        <mapping class="sin.domain.User" />
    </session-factory>
</hibernate-configuration>

3.hibernate 工厂类

public class HibernateUtil {
    private static final SessionFactory sessionFactory = buildSessionFactory();
    private static SessionFactory buildSessionFactory() {
        try {
            Configuration cfg = new Configuration().configure();
            StandardServiceRegistry ssr =new StandardServiceRegistryBuilder().applySettings(cfg.getProperties()).build();
            SessionFactory factory = cfg.buildSessionFactory(ssr);
            return factory;
        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
    public static void schemaCreate() {
        Configuration cf = new Configuration().configure();
        SchemaExport se = new SchemaExport(cf);
        se.create(true, true);
    }
    public static void schemaUpdate() {
        Configuration cf = new Configuration().configure();
        SchemaUpdate su = new SchemaUpdate(cf);
        su.execute(false, true);
    }
    public static void schemaValidate() {
        Configuration cf = new Configuration().configure();
        SchemaValidator su = new SchemaValidator(cf);
        su.validate();
    }
    public static void main(String[] args) {
        schemaCreate();
    }
}

4.实体类，此处省略set/get方法

@Entity
@Table(name = "t_h_user")
public class User {
         
    @Id
    @GeneratedValue
    private int id;
    private String name;
    private Date birthday;

5.测试

public class ch01 {
    private static SessionFactory sf;
    @BeforeClass
    public static void befoe() {
        sf = HibernateUtil.getSessionFactory();
    }
    @Test
    public void test() {
        User u = new User();
        u.setName("chenlongccc");
        u.setBirthday(new Date());
          
        Session session = sf.getCurrentSession();
          
        session.beginTransaction();
        session.save(u);
        session.getTransaction().commit();
        //session.close();
    }
}

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