Hibernate框架搭建及配置文件详解

Hibernate主框架搭建

1、导包

框架下载：https://sourceforge.net/projects/hibernate/files/hibernate-orm/5.0.7.Final/

解压后将lib/required文件夹下所有jar包导入工程（全部复制粘贴）

导入数据库驱动包，导入mysql-connector-java-5.1.7-bin.jar（MySQL数据库驱动）

2、创建数据库，准备表、实体Bean

创建数据库

CREATE TABLE `cst_customer` (
  `cust_id` BIGINT(32) NOT NULL AUTO_INCREMENT COMMENT '客户编号(主键)',
  `cust_name` VARCHAR(32) NOT NULL COMMENT '客户名称(公司名称)',
  `cust_user_id` BIGINT(32) DEFAULT NULL COMMENT '负责人id',
  `cust_create_id` BIGINT(32) DEFAULT NULL COMMENT '创建人id',
  `cust_source` VARCHAR(32) DEFAULT NULL COMMENT '客户信息来源',
  `cust_industry` VARCHAR(32) DEFAULT NULL COMMENT '客户所属行业',
  `cust_level` VARCHAR(32) DEFAULT NULL COMMENT '客户级别',
  `cust_linkman` VARCHAR(64) DEFAULT NULL COMMENT '联系人',
  `cust_phone` VARCHAR(64) DEFAULT NULL COMMENT '固定电话',
  `cust_mobile` VARCHAR(16) DEFAULT NULL COMMENT '移动电话',
  PRIMARY KEY (`cust_id`)
) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

创建表实体Bean

package cn.itheima.domain;

public class Customer {
	
	/*
	 * CREATE TABLE `cst_customer` (
	  `cust_id` BIGINT(32) NOT NULL AUTO_INCREMENT COMMENT '客户编号(主键)',
	  `cust_name` VARCHAR(32) NOT NULL COMMENT '客户名称(公司名称)',
	  `cust_source` VARCHAR(32) DEFAULT NULL COMMENT '客户信息来源',
	  `cust_industry` VARCHAR(32) DEFAULT NULL COMMENT '客户所属行业',
	  `cust_level` VARCHAR(32) DEFAULT NULL COMMENT '客户级别',
	  `cust_linkman` VARCHAR(64) DEFAULT NULL COMMENT '联系人',
	  `cust_phone` VARCHAR(64) DEFAULT NULL COMMENT '固定电话',
	  `cust_mobile` VARCHAR(16) DEFAULT NULL COMMENT '移动电话',
	  PRIMARY KEY (`cust_id`)
	) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
	 */
	private Long cust_id;
	
	private String cust_name;
	private String cust_source;
	private String cust_industry;
	private String cust_level;
	private String cust_linkman;
	private String cust_phone;
	private String cust_mobile;
	public Long getCust_id() {
		return cust_id;
	}
	public void setCust_id(Long cust_id) {
		this.cust_id = cust_id;
	}
	public String getCust_name() {
		return cust_name;
	}
	public void setCust_name(String cust_name) {
		this.cust_name = cust_name;
	}
	public String getCust_source() {
		return cust_source;
	}
	public void setCust_source(String cust_source) {
		this.cust_source = cust_source;
	}
	public String getCust_industry() {
		return cust_industry;
	}
	public void setCust_industry(String cust_industry) {
		this.cust_industry = cust_industry;
	}
	public String getCust_level() {
		return cust_level;
	}
	public void setCust_level(String cust_level) {
		this.cust_level = cust_level;
	}
	public String getCust_linkman() {
		return cust_linkman;
	}
	public void setCust_linkman(String cust_linkman) {
		this.cust_linkman = cust_linkman;
	}
	public String getCust_phone() {
		return cust_phone;
	}
	public void setCust_phone(String cust_phone) {
		this.cust_phone = cust_phone;
	}
	public String getCust_mobile() {
		return cust_mobile;
	}
	public void setCust_mobile(String cust_mobile) {
		this.cust_mobile = cust_mobile;
	}
	@Override
	public String toString() {
		return "Customer [cust_id=" + cust_id + ", cust_name=" + cust_name + "]";
	}
	
	
	

}

3、书写配置文件

主配置文件

	
	
		
		 
		com.mysql.jdbc.Driver
		 
		jdbc:mysql:///hibernate_32
		 
		root
		 
		1234
		
		org.hibernate.dialect.MySQLDialect
		
		
		
		
		true
		
		true
		
		update
		
		
		
	

orm元数据配置

4、测试（增删改查）

package cn.itheima.b_api;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.junit.Test;

import cn.itheima.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年代的connection对象. 还可以完成对数据库中数据的增删改查操作.
//				session是hibernate操作数据库的核心对象
public class Demo3 {

	@Test
	//事务操作
	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 获得session
		Session session = sf.openSession();
		//4 session获得操作事务的Transaction对象
		//获得操作事务的tx对象
		//Transaction tx = session.getTransaction();
		//开启事务并获得操作事务的tx对象(建议使用)
		Transaction tx2 = session.beginTransaction();
		//----------------------------------------------
		
		
		//----------------------------------------------
		tx2.commit();//提交事务
		tx2.rollback();//回滚事务
		session.close();//释放资源
		sf.close();//释放资源
	}
	
	@Test
	//session的新增
	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 获得session
		Session session = sf.openSession();
		//4 session获得操作事务的Transaction对象
		//获得操作事务的tx对象
		//Transaction tx = session.getTransaction();
		//开启事务并获得操作事务的tx对象(建议使用)
		Transaction tx2 = session.beginTransaction();
		//----------------------------------------------
		Customer c = new Customer();
		c.setCust_name("传智播客");
		
		session.save(c);
		//----------------------------------------------
		tx2.commit();//提交事务
		session.close();//释放资源
		sf.close();//释放资源
	}
	@Test
	//session的查询
	//查询id为1的customer对象
	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 获得session
		Session session = sf.openSession();
		//4 session获得操作事务的Transaction对象
		//获得操作事务的tx对象
		//Transaction tx = session.getTransaction();
		//开启事务并获得操作事务的tx对象(建议使用)
		Transaction tx2 = session.beginTransaction();
		//----------------------------------------------
		
		Customer customer = session.get(Customer.class, 1l);
		
		System.out.println(customer);
		//----------------------------------------------
		tx2.commit();//提交事务
		session.close();//释放资源
		sf.close();//释放资源
	}
	@Test
	//session的修改
	//修改id为1的customer对象的name属性为黑马程序员
	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 获得session
		Session session = sf.openSession();
		//4 session获得操作事务的Transaction对象
		//获得操作事务的tx对象
		//Transaction tx = session.getTransaction();
		//开启事务并获得操作事务的tx对象(建议使用)
		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("黑马程序员");
		//3 执行update
		session.update(c);
		//----------------------------------------------
		tx2.commit();//提交事务
		session.close();//释放资源
		sf.close();//释放资源
	}
	@Test
	//session的删除
	//删除id为1的customer对象
	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 获得session
		Session session = sf.openSession();
		//4 session获得操作事务的Transaction对象
		//获得操作事务的tx对象
		Transaction tx = session.getTransaction();
		tx.begin();
		//开启事务并获得操作事务的tx对象(建议使用)
		Transaction tx2 = session.beginTransaction();
		//----------------------------------------------
		//1 获得要修改的对象
		Customer c = session.get(Customer.class, 1l);
		//2 调用delete删除对象
		session.delete(c);
		//----------------------------------------------
		tx2.commit();//提交事务
		session.close();//释放资源
		sf.close();//释放资源
	}
}

五、工具类

package utils;

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

public class HibernateUtils {
	
	private static SessionFactory factory;
	
	static {
		 Configuration config = new Configuration().configure();
		 factory = config.buildSessionFactory();
	}
	
	//获得session  》》 获得全新session
	public static Session openSession(){
		Session session = factory.openSession();
		return session;		
	}
	
	
	
	//获得session  》》 获得与线程绑定的session
	public static Session getCurrentSession(){
		Session session = factory.getCurrentSession();
		return session;		
	}
}