hibernate 基本配置详解，hibernate入门配置

朴灿烈づ我的快乐病毒、 2022-05-22 04:12 197阅读 0赞

这篇博客，主要是对hibernate常用的标签一个说明，如果你还不懂怎么配置基本的hibernate可以去看这篇博客

[https://blog.csdn.net/tomwildboar/article/details/80694269][https_blog.csdn.net_tomwildboar_article_details_80694269]

orm元数据（实体配置文件）

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE hibernate-mapping PUBLIC 
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
    
        
    <hibernate-mapping package="hibernate.domain">
    	
    	<class name="hibernate.domain.Customer" table="cst_customer">
    		
    	
    		<id name="cust_id" column="cust_id">
    			
    			<generator class="native"></generator>
    		</id>
    		
    		 
    		
    		
    		
    		
    		
    		
    		<property name="cust_name" column="cust_name"></property>
    		<property name="cust_source" column="cust_source"></property>
    		<property name="cust_industry" column="cust_industry"></property>
    		<property name="cust_level" column="cust_level"></property>
    		<property name="cust_linkman" column="cust_linkman"></property>
    		<property name="cust_phone" column="cust_phone"></property>
    		<property name="cust_mobile" column="cust_mobile"></property>
    	</class>
    	
    
    </hibernate-mapping>

主配置文件

<?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>
    		
    		
    		
    		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    		
    		<property name="hibernate.connection.url">jdbc:mysql:///hibernate</property>
    		
    		<property name="hibernate.connection.username">root</property>
    		
    		<property name="hibernate.connection.password">123</property>
    		
    		<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    		
    		
    		<property name="hibernate.show_sql">true</property>

package hibernate.test;
    
    import org.hibernate.Session;
    import org.hibernate.SessionFactory;
    import org.hibernate.Transaction;
    import org.hibernate.cfg.Configuration;
    import org.junit.Test;
    
    import hibernate.domain.Customer;
    
    //学习Session对象
    //session对象功能：表达hibernate框架与数据库之间的连接(会话)
    //session 类似于JDBC的connection对象 还可以完成对数据库中数据的增删改查
    //session 是hibernate操作数据库的核心对象
    
    public class api_session {
    	
    	@Test
    	public void fun1(){
    		//1、创建，调用空参构造
    		Configuration conf = new Configuration().configure();
    		 
    		//2、根据配置信息，创建SessionFactory对象
    		SessionFactory sf = conf.buildSessionFactory();
    		
    		//3、获取sessio
    		//打开一个新的session对象
    		Session session = sf.openSession();
    		
    		//4、session获得操作事物的Transaction对象
    		//获得操作事物的对象
    //		Transaction tx = session.getTransaction();
    		//获得操作事物的对象 并开启事务
    		Transaction tx2 = session.beginTransaction();
    		//-----------------------------
    //			相对应的增删改查
    		
    		
    		//-----------------------------
    		
    		tx2.commit();  //提交
    		tx2.rollback(); //回滚
    		session.close();
    		sf.close();
    		
    	}
    	
    	//增
    	@Test
    	public void fun2(){
    		//1、创建，调用空参构造
    		Configuration conf = new Configuration().configure();
    		 
    		//2、根据配置信息，创建SessionFactory对象
    		SessionFactory sf = conf.buildSessionFactory();
    		
    		//3、获取sessio
    		//打开一个新的session对象
    		Session session = sf.openSession();
    		
    		//4、session获得操作事物的Transaction对象
    		//获得操作事物的对象
    //		Transaction tx = session.getTransaction();
    		//获得操作事物的对象 并开启事务
    		Transaction tx2 = session.beginTransaction();
    		//-----------------------------
    		Customer c = new Customer();
    		c.setCust_name("123456");
    		
    		session.save(c);
    		
    		
    		//-----------------------------
    		
    		
    		
    		tx2.commit();  //提交
    //		tx2.rollback(); //回滚
    		session.close();
    		sf.close();
    		
    	}
    	//查询 id = 1
    	@Test
    	public void fun3(){
    		//1、创建，调用空参构造
    		Configuration conf = new Configuration().configure();
    		 
    		//2、根据配置信息，创建SessionFactory对象
    		SessionFactory sf = conf.buildSessionFactory();
    		
    		//3、获取sessio
    		//打开一个新的session对象
    		Session session = sf.openSession();
    		
    		//4、session获得操作事物的Transaction对象
    		//获得操作事物的对象
    //		Transaction tx = session.getTransaction();
    		//获得操作事物的对象 并开启事务
    		Transaction tx2 = session.beginTransaction();
    		//-----------------------------
    	
    		
    		Customer customer = session.get(Customer.class, 1l);
    		System.out.println(customer.getCust_name());
    		
    		//-----------------------------
    		
    		
    		
    		tx2.commit();  //提交
    //		tx2.rollback(); //回滚
    		session.close();
    		sf.close();
    		
    	}
    	
    		//修改
    		@Test
    		public void fun4(){
    			//1、创建，调用空参构造
    			Configuration conf = new Configuration().configure();
    			 
    			//2、根据配置信息，创建SessionFactory对象
    			SessionFactory sf = conf.buildSessionFactory();
    			
    			//3、获取sessio
    			//打开一个新的session对象
    			Session session = sf.openSession();
    			
    			//4、session获得操作事物的Transaction对象
    			//获得操作事物的对象
    //			Transaction tx = session.getTransaction();
    			//获得操作事物的对象 并开启事务
    			Transaction tx2 = session.beginTransaction();
    			//-----------------------------
    			//1、获得要修改的对象
    			Customer c = session.get(Customer.class, 1l);
    			//2、修改
    			c.setCust_name("222222");
    			session.update(c);
    			
    			
    			//-----------------------------
    			
    			
    			
    			tx2.commit();  //提交
    //			tx2.rollback(); //回滚
    			session.close();
    			sf.close();
    			
    		}
    		
    		//删除
    		@Test
    		public void fun5(){
    			//1、创建，调用空参构造
    			Configuration conf = new Configuration().configure();
    			 
    			//2、根据配置信息，创建SessionFactory对象
    			SessionFactory sf = conf.buildSessionFactory();
    			
    			//3、获取sessio
    			//打开一个新的session对象
    			Session session = sf.openSession();
    			
    			//4、session获得操作事物的Transaction对象
    			//获得操作事物的对象
    //			Transaction tx = session.getTransaction();
    			//获得操作事物的对象 并开启事务
    			Transaction tx2 = session.beginTransaction();
    			
    			//-----------------------------
    			//1、获得要删除的对象
    			Customer c = session.get(Customer.class, 1l);
    			//2、删除
    			session.delete(c);
    			
    			
    			//-----------------------------
    					
    			tx2.commit();  //提交
    //			tx2.rollback(); //回滚
    			session.close();
    			sf.close();
    			
    		}
    	
    	
    	
    }

<property name="hibernate.format\_sql">true</property><property name="hibernate.hbm2ddl.auto">update</property><mapping resource="hibernate/domain/Customer.hbm.xml"/></session-factory></hibernate-configuration>

核心api  and 增删改查

[https_blog.csdn.net_tomwildboar_article_details_80694269]: https://blog.csdn.net/tomwildboar/article/details/80694269