Java 测试Hibernate+Mysql简单的数据存储

想使用Hibernate框架，在网上看了一个Hibernate学习视频，试着做了一个小小的Java连接数据库的操作，Java初学者一个，大家多多包涵

开发环境：

　　1.安装MySql，

　　2.安装了Eclipse+插件hibernatetools-Update-4.1.2插件

　　3.java包导入1.hibernate-core　　2.Junit4.0　　3.mysql

思路：

　　1.配置Hibernate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>

    <property name="connection.username">root</property> <!-- 数据库用户名 -->

    <property name="connection.password"></property>     <!-- 数据库密码 -->

    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

    <property name="connection.url">jdbc:mysql:///hibernate?useUnicode=true&amp;charactertEncoding=UTF-8</property>

    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

    

  

    <property name="show_sql">true</property> <!-- SQL输出到控制台 -->

    <property name="format_sql" >true</property> <!-- 格式化SQL -->

    <property name="hbm2ddl.auto">update</property>    <!-- create|update|create-drop|validate:检查数据表结构是否相同 -->

      

    

    <mapping resource="Students.hbm.xml" />    <!-- 学生配置文件 -->

    </session-factory>

</hibernate-configuration>

　　2.定义持久话学生类

//学生类

public class Students {

    // 1.公有的类

    // 2.提供公有的不带参数的默认的构造方法

    // 3.属性私有

    // 4.属性setter/getter封装



    private int sid;



    private String sname;



    private String gender;



    private String address;



    public Students() {



    }



    public Students(int sid, String sname, String gender, String address) {

        // super();

        this.sid = sid;

        this.sname = sname;

        this.gender = gender;

        this.address = address;

    }



    public int getSid() {

        return sid;

    }



    public void setSid(int sid) {

        this.sid = sid;

    }



    public String getSname() {

        return sname;

    }



    public void setSname(String sname) {

        this.sname = sname;

    }



    public String getGender() {

        return gender;

    }



    public void setGender(String gender) {

        this.gender = gender;

    }



    public String getAddress() {

        return address;

    }



    public void setAddress(String address) {

        this.address = address;

    }



    @Override

    public String toString() {

        return "Students [sid=" + sid + ", sname=" + sname + ", gender="

                + gender + ", address=" + address + "]";

    }



}

3.配置Students.hbm.xml文件，这个是由Hibernate插件工具自动完成的，Src右键-Other-Hibernate-hbm.xml配置文件

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<!-- Generated 2015-6-25 19:45:24 by Hibernate Tools 3.4.0.CR1 -->

<hibernate-mapping>

    <class name="Students" table="STUDENTS">

        <id name="sid" type="int">

            <column name="SID" />

            <generator class="assigned" />

        </id>

        <property name="sname" type="java.lang.String">

            <column name="SNAME" />

        </property>

        <property name="gender" type="java.lang.String">

            <column name="GENDER" />

        </property>

        <property name="address" type="java.lang.String">

            <column name="ADDRESS" />

        </property>

    </class>

</hibernate-mapping>

 

4.定义一个StudentsTest测试类

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

import org.hibernate.service.ServiceRegistry;

import org.hibernate.service.ServiceRegistryBuilder;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;



//测试类

//@SuppressWarnings("deprecation")

public class StudentsTest {



    

    private SessionFactory sessionFactory; //会话工厂

    private Session session;               //会话    

    private Transaction transaction;       

    

    @Before        //之前

    public void init()  //初始化

    {

        //创建配置对象

        Configuration config=new Configuration().configure();

        //创建服务注册对象

        ServiceRegistry serviceRegistry=new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();

        //创建会话工厂对象

        sessionFactory=config.buildSessionFactory(serviceRegistry);

        //会话对象

        session=sessionFactory.openSession();

        //开启事务

        transaction=session.beginTransaction();

    }

    

    @After    //之后

    public void destory()

    {

        transaction.commit();    //提交事务

        session.close();        //关闭会话

        sessionFactory.close(); //关闭会话工厂

    }

    

    @Test    //测试

    public void testSaveStudents()

    {

        Students s=new Students(3,"张三丰","男","武当山");

        session.save(s);    

        Students s1=new Students(4,"shexunyu","男","咸宁");

        session.save(s1);    //保存对象进入数据库

    }

    

    

}

5.到这就算完成了，在把工程的目录结构截图给大家

6.大家可以右键StudentsTest右键Runas-JUnit Test进行测试吧，好啦，代码我上传了，点这里下载

http://files.cnblogs.com/files/shexunyu/Java-Hibernate_002.zip

User:shexunyu Date:2015-06-26  Contact: