Hibernate 的基本配置
一：所需基本jar包：
hibernate3.jar 这个是hibernate最主要的jar包
cglib-2.2.jar 高效的代码生成工具, Hibernate用它在运行时扩展 Java类和实现 Java 接口
antlr-2.7.6.jar 语言转换工,Hibernate利用它实现 HQL 到 SQL的转换
commons-collection-3.1.jar Apache 的工具集,用来增强Java对集合的处理能力
dom4j-1.6.1.jar dom4j XML 解析器
javassist-3.12.0.GA.jar 用于对Java字节码（. class ）文件进行操作，功能强大
jta-1.1.jar 标准的 JAVA 事务处理接口
hibernate-jpa-2.0-api-1.0.0.Final.jar 使用注解需要的jar包
slf4j-api-l.5.8.jar
slf4j-log4j12-1.5.8.jar
log4j-1.2.15.jar 最后三个包长生日志信息
二：hibernate.cfg.xml 的配置信息
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPEhibernate-configurationPUBLIC
"-//Hibernate/HibernateConfigurationDTD3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<propertyname="connection.driver_class">com.mysql.jdbc.Driver</property>
<propertyname="connection.url">jdbc:mysql://localhost/hibernate</property>
<propertyname="connection.username">root</property>
<property name="connection.password">root</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>-->
<mapping resource="com/bjsxt/hibernate/Student.hbm.xml"/>
<mappingclass="com.bjsxt.hibernate.Teacher"/>
</session-factory></hibernate-configuration>
三：实体类
package com.bjsxt.hibernate;
public class Student {
privateintid;
privateStringname;
privateintage;
publicintgetId(){
returnid;
}
publicvoidsetId(intid){
this.id=id;
}
publicStringgetName(){
returnname;
}
publicvoidsetName(Stringname){
this.name=name;
}
publicintgetAge(){
returnage;
}
publicvoidsetAge(intage){
this.age=age;
}类students的Student.hbm.xml
<?xmlversion="1.0"?>
<!DOCTYPEhibernate-mappingPUBLIC
"-//Hibernate/HibernateMappingDTD3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping>
<classname="com.bjsxt.hibernate.Student">
<idname="id"/>
<propertyname="name"/>
<propertyname="age"/>
</class>
</hibernate-mapping>//annotation的使用对于teacher实体
package com.bjsxt.hibernate;
import javax.persistence.Entity;
importjavax.persistence.Id;
@Entity
publicclassTeacher{
privateintid;
privateStringname;
privateStringtitle;
@Id
publicintgetId(){
returnid;
}
publicvoidsetId(intid){
this.id=id;
}
publicStringgetName(){
returnname;
}
publicvoidsetName(Stringname){
this.name=name;
}
publicStringgetTitle(){
returntitle;
}
publicvoidsetTitle(Stringtitle){
this.title=title;
}
}//测试
public class MyTest{
@Test
public void studentTest() {
Students=newStudent();
s.setId(1);
s.setName("zhangsan");
s.setAge(8);
Configurationcfg=newConfiguration();
SessionFactorysf=cfg.configure().buildSessionFactory();
Sessionsession=sf.openSession();
session.beginTransaction();
session.save(s);
session.getTransaction().commit();
session.close();
}@Test
public void teacherTest {
Teachert=newTeacher();
t.setId(1);
t.setName("t1");
t.setTitle("middle");
SessionFactorysessionFactory=newAnnotationConfiguration().configure().buildSessionFactory();
Sessionsession=sessionFactory.openSession();
session.beginTransaction();
session.save(t);
session.getTransaction().commit();
session.close();
sessionFactory.close();
}}