建立實體Java類

import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
​
import org.hibernate.annotations.GenericGenerator;
​
@Entity
@Table( name = "EVENTS" )
public class Event {
    private Long id;
​
    private String title;
    private Date date;
​
    public Event() {
        // this form used by Hibernate
   }
​
    public Event(String title, Date date) {
        // for application use, to create new events
        this.title = title;
        this.date = date;
   }
​
    @Id
    @GeneratedValue(generator="increment")
    @GenericGenerator(name="increment", strategy = "increment")
    @Column(name = "EVENTS_ID")
    public Long getId() {
        return id;
   }
​
    private void setId(Long id) {
        this.id = id;
   }
​
    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "EVENT_DATE")
    public Date getDate() {
        return date;
   }
​
    public void setDate(Date date) {
        this.date = date;
   }
​
    public String getTitle() {
        return title;
   }
​
    public void setTitle(String title) {
        this.title = title;
   }
}
 

向hibernate.cfg.xml檔案中新增對映資訊

<mapping class="類路徑.Event"/>

JUnit測試測試程式

import java.util.Date;
import java.util.List;
​
import junit.framework.TestCase;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
​
public class AnnotationsIllustrationTest extends TestCase {
    private SessionFactory sessionFactory;
​
    @Override
    protected void setUp() throws Exception {
        // A SessionFactory is set up once for an application!
        final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
               .configure() // configures settings from hibernate.cfg.xml
               .build();
        try {
            sessionFactory = new MetadataSources(registry).buildMetadata().buildSessionFactory();
       } catch (Exception e) {
            // The registry would be destroyed by the SessionFactory, but we had trouble building the SessionFactory
            // so destroy it manually.
            StandardServiceRegistryBuilder.destroy(registry);
       }
   }
​
    @Override
    protected void tearDown() throws Exception {
        if (sessionFactory != null) {
            sessionFactory.close();
       }
   }
​
    @SuppressWarnings({"unchecked"})
    public void testBasicUsage() {
        // create a couple of events...
        Session session = sessionFactory.openSession();
        session.beginTransaction();
        session.save(new Event("Our very first event!", new Date()));
        session.save(new Event("A follow up event", new Date()));
        session.getTransaction().commit();
        session.close();
​
        // now lets pull events from the database and list them
        session = sessionFactory.openSession();
        session.beginTransaction();
        List result = session.createQuery("from Event").list();
        for (Event event : (List<Event>) result) {
            System.out.println("Event (" + event.getDate() + ") : " + event.getTitle());       }        session.getTransaction().commit();        session.close();   }}
 

執行測試

Hibernate: 十一月 01, 2018 11:54:51 上午 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
​
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@6df20ade] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
    
    drop table if exists EVENTS
​
十一月 01, 2018 11:54:51 上午 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection
INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@cda4919] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.
Hibernate: 
    
    create table EVENTS (
       EVENTS_ID bigint not null,
        EVENT_DATE datetime(6),
        title varchar(255),
        primary key (EVENTS_ID)
   ) engine=InnoDB
十一月 01, 2018 11:54:52 上午 org.hibernate.tool.schema.internal.SchemaCreatorImpl applyImportSources
INFO: HHH000476: Executing import script 'org.hiber[email protected]344b8190'
Hibernate: 
    select
        max(EVENTS_ID) 
    from
        EVENTS
Hibernate:    insert    into        EVENTS       (EVENT_DATE, title, EVENTS_ID)    values       (?, ?, ?)Hibernate:    insert    into        EVENTS       (EVENT_DATE, title, EVENTS_ID)    values       (?, ?, ?)十一月 01, 2018 11:54:52 上午 org.hibernate.hql.internal.QueryTranslatorFactoryInitiator initiateServiceINFO: HHH000397: Using ASTQueryTranslatorFactoryHibernate:    select        event0_.EVENTS_ID as EVENTS_I1_0_,        event0_.EVENT_DATE as EVENT_DA2_0_,        event0_.title as title3_0_    from        EVENTS event0_​十一月 01, 2018 11:54:52 上午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop