Hibernate的Annotation版Hello world实例
本文实例讲述了Hibernate的Annotation版Helloworld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：
importjavax.persistence.Column;
importjavax.persistence.Entity;
importjavax.persistence.Id;
importjavax.persistence.Table;
@Entity
@Table(name="teacher")
publicclassTeacher{
privateintid;
privateStringname;
privateStringtitle;
@Id
publicintgetId(){
returnid;
}
publicvoidsetId(intid){
this.id=id;
}
@Column(name="name")
publicStringgetName(){
returnname;
}
publicvoidsetName(Stringname){
this.name=name;
}
@Column(name="title")
publicStringgetTitle(){
returntitle;
}
publicvoidsetTitle(Stringtitle){
this.title=title;
}
}
对应的hibernate.cfg.xml文件：
<?xmlversion='1.0'encoding='utf-8'?> <!DOCTYPEhibernate-configurationPUBLIC "-//Hibernate/HibernateConfigurationDTD3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!--Databaseconnectionsettings--> <propertyname="connection.driver_class">com.mysql.jdbc.Driver</property> <propertyname="connection.url">jdbc:mysql://localhost/hibernate</property> <propertyname="connection.username"></property> <propertyname="connection.password"></property> <!--JDBCconnectionpool(usethebuilt-in)--> <!-- <propertyname="connection.pool_size">1</property> --> <!--SQLdialect--> <propertyname="dialect">org.hibernate.dialect.MySQLDialect</property> <!--EnableHibernate'sautomaticsessioncontextmanagement--> <propertyname="current_session_context_class">thread</property> <!--Disablethesecond-levelcache--> <propertyname="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property> <!--EchoallexecutedSQLtostdout--> <propertyname="show_sql">true</property> <!--Dropandre-createthedatabaseschemaonstartup--> <!-- <propertyname="hbm2ddl.auto">update</property> --> <mappingresource="com/hibernate/model/Student.hbm.xml"/> <mappingclass="com.hibernate.model.Teacher"/> </session-factory> </hibernate-configuration>
测试类：
importorg.hibernate.Session;
importorg.hibernate.SessionFactory;
importorg.hibernate.cfg.AnnotationConfiguration;
importorg.hibernate.cfg.Configuration;
importcom.huxing.hibernate.model.Student;
importcom.huxing.hibernate.model.Teacher;
publicclassStudentTest{
publicstaticvoidmain(String[]args){
Studenta=newStudent();
a.setId(123);
a.setAge(32);
a.setName("hellohibernate!");
Teachertea=newTeacher();
tea.setId(4);
tea.setName("mysql");
tea.setTitle("high");
Configurationcfg=newAnnotationConfiguration();
SessionFactorycf=cfg.configure().buildSessionFactory();
Sessionsession=cf.openSession();
session.beginTransaction();
session.save(tea);
session.getTransaction().commit();
session.close();
cf.close();
}
}
注意：代码省略了包路径。
其他方面：
1.注解可以加在属性上，也可以加在get方法上。
2.注解的mapping和xml配置的xml的不同！一个是resource,一个是class。
希望本文所述对大家Hibernate框架程序设计有所帮助。