package org.hibernate.tutorial.domain; public class Event { private int id; public int getId() { return id; } public void setId(int id) { this.id = id; } }
二.编写xx.hb.xml文件
<?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="org.hibernate.tutorial.domain"> <class name="Event" table="EVENTS"> <id name="id" column="EVENT_ID"> <generator class="native"/> </id> </class> </hibernate-mapping>
三.编写hibernate.cfg.xml文件
<?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/test?useUnicode=true&characterEncoding=utf8</property> <property name="connection.username">root</property> <property name="connection.password">admin</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="org/hibernate/tutorial/domain/Event.hbm.xml"/> </hibernate-configuration>
四.建数据库表
五.测试
public class StudentTest { public static void main(String[] args) { Event s = new Event(); Configuration cfg = new Configuration().configure("/hibernate.cfg.xml"); SessionFactory sf = cfg.buildSessionFactory(); Session session = sf.openSession(); session.beginTransaction(); //保存 session.save(s); //查询 List result = session.createQuery("from Event").list(); session.getTransaction().commit(); session.close(); sf.close(); } }
-------------------------------------------------------------
建立annotation方式数据访问
一.编写Entity类
增加实体注解,交给hibernate管理,和主键注解
@Entity 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; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } }
二.在hibernate.cfg.xml文件映射Entity类
引用
<mapping class="org.hibernate.tutorial.domain.Teacher"/>
三.测试
建立AnnotationConfiguration方式的配置解析
public static void main(String[] args) { Teacher t = new Teacher(); t.setId(1); t.setName("xiaoxiao"); t.setTitle("It's a new teacher!"); Configuration cfg = new AnnotationConfiguration().configure("/hibernate.cfg.xml"); SessionFactory sf = cfg.buildSessionFactory(); Session session = sf.openSession(); session.beginTransaction(); session.save(t); session.getTransaction().commit(); session.close(); sf.close(); }