Hibernate的Annotation版Hello world实例

2020-04-11 13:34胡笑语 JAVA教程

这篇文章主要介绍了Hibernate的Annotation版Hello world实现方法,详细分析了Annotation的具体使用步骤与Hello world实现方法,需要的朋友可以参考下

本文实例讲述了Hibernate的Annotation版Hello world实现方法。分享给大家供大家参考，具体如下：

需要引入的包：hibernate-commons-annotations-4.0.4.Final.jar
由于我使用的是：hibernate-release-4.3.5.Final，在required目录下已经有了。

bean：

				?

									import javax.persistence.Column;

									import javax.persistence.Entity;

									import javax.persistence.Id;

									import javax.persistence.Table;

									@Entity

									@Table(name="teacher")

									public class Teacher {

									  private int id;

									  private String name;

									  private String title;

									  @Id

									  public int getId() {

									    return id;

									  }

									  public void setId(int id) {

									    this.id = id;

									  }

									  @Column(name="name")

									  public String getName() {

									    return name;

									  }

									  public void setName(String name) {

									    this.name = name;

									  }

									  @Column(name="title")

									  public String getTitle() {

									    return title;

									  }

									  public void setTitle(String title) {

									    this.title = title;

									  }

									}

对应的hibernate.cfg.xml文件：

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									<?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>

									    <!-- Database connection settings -->

									    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

									    <property name="connection.url">jdbc:mysql://localhost/hibernate</property>

									    <property name="connection.username"></property>

									    <property name="connection.password"></property>

									    <!-- JDBC connection pool (use the built-in) -->

									    <!--

									    <property name="connection.pool_size">1</property>

									     -->

									    <!-- SQL dialect -->

									    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

									    <!-- Enable Hibernate's automatic session context management -->

									    <property name="current_session_context_class">thread</property>

									    <!-- Disable the second-level cache -->

									    <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>

									    <!-- Echo all executed SQL to stdout -->

									    <property name="show_sql">true</property>

									    <!-- Drop and re-create the database schema on startup -->

									    <!--

									    <property name="hbm2ddl.auto">update</property>

									    -->

									    <mapping resource="com/hibernate/model/Student.hbm.xml"/>

									    <mapping class="com.hibernate.model.Teacher"/>

									  </session-factory>

									</hibernate-configuration>

测试类：

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									import org.hibernate.Session;

									import org.hibernate.SessionFactory;

									import org.hibernate.cfg.AnnotationConfiguration;

									import org.hibernate.cfg.Configuration;

									import com.huxing.hibernate.model.Student;

									import com.huxing.hibernate.model.Teacher;

									public class StudentTest {

									  public static void main(String[] args) {

									    Student a = new Student();

									    a.setId(123);

									    a.setAge(32);

									    a.setName("hello hibernate!");

									    Teacher tea = new Teacher();

									    tea.setId(4);

									    tea.setName("mysql");

									    tea.setTitle("high");

									    Configuration cfg = new AnnotationConfiguration();

									    SessionFactory cf = cfg.configure().buildSessionFactory();

									    Session session = cf.openSession();

									    session.beginTransaction();

									    session.save(tea);

									    session.getTransaction().commit();

									    session.close();

									    cf.close();

									  }

									}