hibernate 把类输出成数据库表
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package com.hibernate.entity;import java.io.Serializable;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.OneToOne;@Entitypublic class Husband implements Serializable {/** * */private static final long serialVersionUID = 2476364405175138004L;private int id;private String name;private Wife wife;@Id@GeneratedValuepublic 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;}}?
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package com.hibernate.entity;import java.io.Serializable;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;@Entitypublic class Wife implements Serializable {/** * */private static final long serialVersionUID = 5270130768836331730L;private int id;private String name;@Id@GeneratedValuepublic 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?:
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<?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 /><mapping /></session-factory></hibernate-configuration>?
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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;@BeforeClasspublic static void setUpBeforeClass() throws Exception {sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();}@AfterClasspublic static void tearDownAfterClass() throws Exception {sessionFactory.close();}@Testpublic 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
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