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'?>
<!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/hibernate</property>
??????? <property name="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"/>
???? <mapping />
??<property name="name" />
??<property name="age" />
??? </class>
</hibernate-mapping>

?

?

//annotation的使用对于teacher实体

package com.bjsxt.hibernate;

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

@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;
?}
}

//测试

public class MyTest{

@Test

public? void studentTest() {
??Student s = new Student();
??s.setId(1);
??s.setName("zhangsan");
??s.setAge(8);
??
??Configuration cfg = new Configuration();
??SessionFactory sf= cfg.configure().buildSessionFactory();
??Session session = sf.openSession();
??session.beginTransaction();
??session.save(s);
??session.getTransaction().commit();
??session.close();
??
?}

? @Test

public? void teacherTest?{
??Teacher t = new Teacher();
??t.setId(1);
??t.setName("t1");
??t.setTitle("middle");
??
??SessionFactory sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
??Session session = sessionFactory.openSession();
??session.beginTransaction();
??session.save(t);
??session.getTransaction().commit();
??session.close();
??sessionFactory.close();
?}

}