Hibernate的helloWord

所需的jar包(八个基本包)
slf4j-nop-1.5.8.jar
slf4j-api-1.5.8.jar
jta-1.1.jar
javassist-3.9.0.GA.jar
hibernate3.jar
dom4j-1.6.1.jar
commons-collections-3.1.jar
antlr-2.7.6.jar

Annotation包
ejb3-persistence.jar
hibernate-commons-annotations.jar
hibernate-annotations.jar

hibernate.cfg.xml
<property name="hbm2ddl.auto">update</property><!--会自动创建表-->

SLF只是一种接口的定义。  类似于 JDBC    JPA

slf4j-nop-1.5.8.jar  为  SLF 的实现jar包
log4j-1.2.15.jar    也为 SLF 的实现jar包
log4j-1.2.15.jar 实现需要引入 SLF 中的转换jar包slf4j-log4j12-1.5.8.jar （适配器模式）

<!--src目录下的hibernate.cfg.xml配置文件-->

<?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">

<hibernate-configuration>

    <session-factory>

        <!-- Database connection settings -->
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.url">jdbc:mysql://localhost/icdpub</property>
        <property name="connection.username">icdpub</property>
        <property name="connection.password">icdpub</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.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>
        <!--XML 文件映射关系配置-->
        <mapping resource="com/meiyoudao/domain/Person.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

//domain类
package com.meiyoudao.domain;

/**
 * @author meiyoudao
 *
 */
public class Person {
	
	private int id;
	private String name;
	private String weight;
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getWeight() {
		return weight;
	}
	public void setWeight(String weight) {
		this.weight = weight;
	}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}

}

<!--和person类同一目录下,名字和映射的domain一致:Person.hbm.xml-->
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--配置包路径-->
<hibernate-mapping package="com.meiyoudao.domain">

    <class name="Person">
        <id name="id"/>
        <property name="name"/>
        <property name="weight"/>
    </class>

</hibernate-mapping>

//测试类
package com.meiyoudao.test;

import org.hibernate.Session;
import org.hibernate.cfg.Configuration;

import com.meiyoudao.domain.Person;

/**
 * @author meiyoudao
 *
 */
public class PersonText {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		Session session = new Configuration().configure().buildSessionFactory()
				.getCurrentSession();

		session.beginTransaction();

		Person person = new Person();
		person.setName("meiyoudao");
		person.setId(122);
		session.save(person);

		session.getTransaction().commit();

	}

}

//Annotation版本
package com.meiyoudao.domain;

import javax.persistence.Entity;
import javax.persistence.Id;
//注解实体类
@Entity
public class PersonAnno {
	
	
	private int id;
	private String name;
	private String weight;
	
	@Id   //注解ID   放在get方法上
	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 getWeight() {
		return weight;
	}
	public void setWeight(String weight) {
		this.weight = weight;
	}

}

<!--hibernate.cfg.xml中添加这一条映射关系-->
<mapping class="com.meiyoudao.domain.PersonAnno"/>

//测试方法
package com.meiyoudao.test;

import org.hibernate.Session;
import org.hibernate.cfg.AnnotationConfiguration;

import com.meiyoudao.domain.PersonAnno;

/**
 * @author meiyoudao
 *
 */
public class PersonAnnoText {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
 
		
//不同之处是AnnotationConfiguration类
			Session session = new AnnotationConfiguration().configure()
					.buildSessionFactory().getCurrentSession();
			session.beginTransaction();
			PersonAnno person = new PersonAnno();
			person.setName("meiyoudao");
			person.setId(1242);
			session.save(person);
			session.getTransaction().commit();
		
		

	}

}