hibernate 配置文件-优快云博客

本文介绍Hibernate配置文件的设置及DAO模式下BankcardDAO类的具体实现。通过详细代码示例展示了如何利用Hibernate进行数据库操作，包括加载配置文件、创建SessionFactory和服务注册等关键步骤。

hibernate.cfg.xml

<?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">

oracle.jdbc.driver.OracleDriver
123
jdbc:oracle:thin:@localhost:1521:orcl
test0816

TEST0816

org.hibernate.dialect.Oracle10gDialect

true
true

update

</session-factory>

//DAO类

package com.hanqi.dao;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

import com.hanqi.entity.Bbbbbank;

//dao类
public class BankcardDAO {

        Configuration cfg=null;
        ServiceRegistry sr=null;
        SessionFactory sf=null;
        Session se=null;
        Transaction tr=null;
public BankcardDAO()
{
    //加载配置文件
     cfg=new Configuration().configure();
    
    //注册服务
     sr=new StandardServiceRegistryBuilder()
            .applySettings(cfg.getProperties()).build();
}
private void init()
{
    sf=cfg.buildSessionFactory(sr);
    se=sf.openSession();
    tr=se.beginTransaction();
}
private void destory()
{
    tr.commit();
    se.close();
    sf.close();
    
}

//单条查询
public Bbbbbank getBankcard(String cardid)
{
    Bbbbbank rtn=null;
    init();
    rtn=(Bbbbbank)se.get(Bbbbbank.class, cardid);
    
    destory();
    return rtn;
}

}

转载于:https://www.cnblogs.com/nicebaby/p/6063580.html