Hibernate demo之使用xml

1.新建maven项目 testHibernate,pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>testHiberate</groupId>
    <artifactId>testHiberate</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- 添加Hibernate依赖 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>3.6.10.Final</version>
        </dependency>

        <!-- 添加Log4J依赖 -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.16</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>1.6.4</version>
        </dependency>

        <!-- 添加javassist -->
        <dependency>
            <groupId>javassist</groupId>
            <artifactId>javassist</artifactId>
            <version>3.12.0.GA</version>
        </dependency>

        <!-- mysql数据库的驱动包 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
    </dependencies>

</project>

2.新建类Event

package com.demo;

import java.util.Date;

public class Event {

    private Long id;//id
    private String title;//标题
    private Date date;//日期
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
}

3.在resource/mapper文件夹下新建Event.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.demo">

    <class name="com.demo.Event" table="EVENTS">

        <id name="id" column="EVENT_ID">

            <generator class="assigned"/>

        </id>

        <property name="date" type="timestamp" column="EVENT_DATE"/>

        <property name="title"/>

    </class>

</hibernate-mapping

>

4.在resource文件夹下新建hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>

<!DOCTYPE hibernate-configuration PUBLIC

        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <!-- Database connection settings -->
        <property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="connection.url">jdbc:mysql://192.168.32.95:3306/db2</property>
        <property name="connection.username">DB_WX_APP</property>
        <property name="connection.password">LH_longfor</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>
        <property name="format_sql">true</property>
        <!-- Drop and re-create the database schema on startup -->
        <property name="hbm2ddl.auto">update</property>
        <mapping resource="mapper/Event.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

5.新建辅助类 HibernateUtil

package com.demo;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

    //定义静态的SessionFactory，产生单例，只生成一个SessionFactory
    private static final SessionFactory sessionFactory = buildSessionFactory();

    //用来初始化SessionFactory
    private static SessionFactory buildSessionFactory() {

        try {

            // Create the SessionFactory from hibernate.cfg.xml

            return new Configuration().configure().buildSessionFactory();

        }

        catch (Throwable ex) {

            // Make sure you log the exception, as it might be swallowed

            System.err.println("Initial SessionFactory creation failed." + ex);

            throw new ExceptionInInitializerError(ex);

        }

    }
    //得到SessionFactory
    public static SessionFactory getSessionFactory() {

        return sessionFactory;//返回SessionFactory的对象

    }

}

6.新建Test类

package com.demo;

import java.util.Date;
import java.util.List;

import org.hibernate.Session;
public class Test {
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Test mgr = new Test();
        //if (args[0].equals("store")) {
        //mgr.createAndStoreEvent("My Event1", new Date());//调用函数插入数据
        //}
mgr.getList();
       // mgr.Get();//单个查询
        HibernateUtil.getSessionFactory().close();
    }
    private void createAndStoreEvent(String title, Date theDate) {

        //得到目前运行的session
        Session session = HibernateUtil.getSessionFactory().getCurrentSession();

        session.beginTransaction();//开始事务
        Event theEvent = new Event();//创建bean对象
        theEvent.setTitle(title);//设置标题
        theEvent.setId(100002L);
        theEvent.setDate(theDate);//设置日期
        session.save(theEvent);//保存对象
        session.getTransaction().commit();//提交事务

    }

    private void Get() {

        //得到目前运行的session
        Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
        Event theEvent = new Event();//创建bean对象
        theEvent.setId(100001L);
        Event e=(Event) session.get(Event.class,100001L);
        System.out.println(e.getTitle());
session.getTransaction().commit();

    }

    void getList(){
        Session session=HibernateUtil.getSessionFactory().getCurrentSession();
        session.beginTransaction();
       List<Event> list= session.createSQLQuery("select * from EVENTS").addEntity(Event.class).list();
  for(Event e:list){

      System.out.println(e.getTitle());
  }
  session.getTransaction().commit();
    }

}

运行Test类即可

https://pan.baidu.com/s/1fhnr4SWTkqd0RAdGniAMtA