hibernate 把类输出成数据库表

 

 

package com.hibernate.entity;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;

@Entity
public class Husband implements Serializable {
	
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 2476364405175138004L;

	
	private int id;
	
	private String name;
	
	private Wife wife;
	
	
	@Id
	@GeneratedValue
	public int getId() {
		return id;
	}

	public String getName() {
		return name;
	}

	@OneToOne//只要加onetoone就可以了，不用写mapping啥的
	public Wife getWife() {
		return wife;
	}

	public void setId(int id) {
		this.id = id;
	}

	public void setName(String name) {
		this.name = name;
	}

	public void setWife(Wife wife) {
		this.wife = wife;
	}
	
	
}

 

 

package com.hibernate.entity;

import java.io.Serializable;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@Entity
public class Wife implements Serializable {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 5270130768836331730L;

	
	private int id;
	
	private String name;

	
	@Id
	@GeneratedValue
	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;
	}
	
	
}

 

hibernate.cfg.xml :

 

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

	<session-factory>
		<property name="dialect">
			org.hibernate.dialect.MySQLDialect
		</property>
		<property name="connection.url">
			jdbc:mysql://localhost/test
		</property>
		<property name="connection.username">root</property>
		<property name="connection.password">root</property>
		<property name="connection.driver_class">
			com.mysql.jdbc.Driver
		</property>

		<!-- JDBC connection pool (use the built-in) -->
		<property name="connection.pool_size">1</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.NoCacheProvider
		</property>

		<!-- Echo all executed SQL to stdout -->
		<property name="show_sql">true</property>

		<property name="format_sql">true</property>
		<mapping class="com.hibernate.entity.Husband" />
		<mapping class="com.hibernate.entity.Wife" />
	</session-factory>

</hibernate-configuration>

 

 

package com.hibernate.test;


import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

public class ORMappingTest {
	
	private static SessionFactory sessionFactory;

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
		sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
	}

	@AfterClass
	public static void tearDownAfterClass() throws Exception {
		sessionFactory.close();
	}
	
	@Test
	public void testSchemaExport() {
		new SchemaExport(new AnnotationConfiguration().configure()).create(true, true);
	}

}

 

跑了@Test后，就会在数据库中生成Husband表和Wife表