Hibernate开发第一个例子

 

1、首先下载以下文件：slf4j-1.5.8  hibernate-distribution-3.3.2.GA-dist
2、在myEclipse中建立hibernate 的User Libraries 库：
   Window—Prefrerences—Java—Build Path—User Libraries

3、新建java项目 并引入自定义hibernate库以及操作mysql的驱动程序
   |-hibernate3.jar
   |-lib\required(全部)
   |-slf4j-1.5.8\slf4j-1.5.8\slf4j-nop-1.5.8.jar

4、建立Student.java

package org.kevin.hibernate.model;

public class Student {

   private int id;

   private String name;

   private String description;

   public Student() {

   }

   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 getDescription() {

      return description;

   }

   public void setDescription(String description) {

      this.description = description;

   }

}

5、建立模型的映射文件：
Student.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">

 

<hibernate-mapping package="org.kevin.hibernate.model">

    <class name="Student" table="Student">

       <id name="id" column="id">

           <generator class="native" />

       </id>

       <property name="name" />

       <property name="description" />

    </class>

</hibernate-mapping>

 

6、建立hibernate配置文件：hibernate.cfg.xml

<?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">123456</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="org/kevin/hibernate/model/Student.hbm.xml"/>

 

    </session-factory>

 

</hibernate-configuration>

7、建立测试文件

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;

import org.kevin.hibernate.model.Student;

 

public class StudentTest {

 

         public static void main(String[] args) {

                   Student s = new Student();

                   s.setId(2);

                   s.setName("kevin");

                   s.setDescription("description");

 

                   Configuration cfg = new Configuration();

                   SessionFactory sf = cfg.configure().buildSessionFactory();

                   Session session = sf.openSession();

                   session.beginTransaction();

                   session.save(s);

                   session.getTransaction().commit();

                   session.close();

         }

}

以上步骤在documentation中有，可参考!