idea2019搭建Hibernate框架环境demo

╰半橙微兮° 2024-04-20 08:11 68阅读 0赞

#### 1、创建项目 ####

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#### 2、连接数据库（以MySQL为例）在连接数据库之前，需创建好数据库 ####

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#### 3、生成持久化类 ####

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##### hibernate.cfg.xml文件 #####

<?xml version='1.0' encoding='utf-8'?>
    <!DOCTYPE hibernate-configuration PUBLIC
            "-//Hibernate/Hibernate Configuration DTD//EN"
            "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
        <session-factory>
            <property name="connection.url">jdbc:mysql://localhost:3306/hibernate?serverTimezone=Asia/Shanghai</property>
            <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
            <property name="connection.username">root</property>
            <property name="connection.password">root</property>
            
            <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    
    
            <mapping class="entity.TestEntity"/>
        </session-factory>
    </hibernate-configuration>

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#### 4、创建测试类，进行测试新增一条数据，hibernate不需要写sql语句，有点类型php的yii2框架，个人认为更好 ####

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#### 测试类文件代码 ####

package test;
    
    import entity.TestEntity;
    import org.hibernate.Session;
    import org.hibernate.SessionFactory;
    import org.hibernate.Transaction;
    import org.hibernate.cfg.Configuration;
    
    /**
     * @author Xuan
     * @date 2019/9/20 11:26
     */
    public class TestMain {
        public static void main(String[] args) {
            //加载配置
            Configuration configuration = new Configuration();
            //读取要读取的配置文件名
            configuration.configure("hibernate.cfg.xml");
            //创建会话工厂
            SessionFactory sessionFactory = configuration.buildSessionFactory();
            //生成一次会话
            Session session = sessionFactory.openSession();
            //开启事务
            Transaction transaction = session.beginTransaction();
            //实例化实体类 也可以使用构造函数赋值，这里做demo，就不做这么麻烦了
            TestEntity test = new TestEntity();
            test.setName("小轩");
            //保存这个实体类
            session.save(test);
            //提交事务
            transaction.commit();
            //关闭会话
            session.close();
            System.out.println("成功插入一条数据");
        }
    }

#### 5、运行测试类 ####

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#### 6、遇到困难可以评论（有信必回）小轩微信号tangchenxuan1999 ####

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