今天开始系统的学习一下hibernate3.3.2 （annotations版)首先去hibernate的官方网站下载hibernate-distribution-3.3.2.GA版本，然后下载slf4j-1.5.8
一、hibernate-annotations-3.4.0.GA,然后在MyEclipse下建立一个java工程，加入如图的jar包。一个是hibernate的核心包hibernate3.jar，然后是lib目录下required下的全部jar，最后是一个是slf4j-1.5.8中的slf4j-nop-1.5.8.jar
二、然后引入MySQL的驱动jar,建立一个名为hibernate的数据库，一个student表，有id，name，age字段.
三、建立一个Student的类文件代码如下
public class Student {private int id;private String name;private int age;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 int getAge() {return age;}public void setAge(int age) {this.age = age;}}
四、然后建立一个Student.hbm.xml文件，里面写的是Student中的属性，代码如下
<?xml version="1.0"?><!DOCTYPE hibernate-mapping SYSTEM "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" ><hibernate-mapping package="com.fengpeng.model"><class name="Student"><id name="id"></id><property name="name"></property><property name="age"></property></class></hibernate-mapping>
五、建立一个hibernate.cfg.xml文件，这个文件很重要不要写错了代码如下
<?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:3306/hibernate</property><property name="connection.username">root</property><property name="connection.password">rootroot</property><!-- JDBC connection pool (use the built-in) --><property name="connection.pool_size">2</property><!-- SQL dialect --><property name="dialect">org.hibernate.dialect.MySQLDialect</property><!-- <property name="current_session_context_class"> org.hibernate.context.ManagedSessionContext </property>Enable Hibernate's current session context --><!-- 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="hbm2ddl.auto">create</property>Drop and re-create the database schema on startup --><mapping resource="com/fengpeng/model/Student.hbm.xml" /></session-factory></hibernate-configuration>
六、建立一个测试类
public class Test {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubSession session=new Configuration().configure().buildSessionFactory().openSession();Student student=new Student();student.setId(2);student.setName("wang");student.setAge(2);session.save(student);session.beginTransaction().commit();session.close();}}
然后运行测试类，会在命令行出现Hibernate: insert into Student (name, age, id) values (?, ?, ?)
说明已经插入成功
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