Hibernate(一)简单CURD

最新推荐文章于 2025-10-21 22:09:11 发布

原创最新推荐文章于 2025-10-21 22:09:11 发布 · 128 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#hibernate #dao #database

Hibernate 专栏收录该内容

2 篇文章

订阅专栏

本文介绍了Java中Person类的属性封装及与数据库的持久化操作，包括对象创建、属性获取与设置、以及通过Hibernate进行数据库交互。

Person.java

package com;
import java.util.Date;
public class Person {
	private String id;
	private String name;
	private Date birthday;

	public Person(){}
	
	public Person(String id,String name, Date birthday) {
		this.id=id;
		this.name = name;
		this.birthday = birthday;
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Date getBirthday() {
		return birthday;
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
}

Person.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"  
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com">
    <class name="Person" table="PERSON">
        <id name="id" column="ID">
            <generator class="assigned"/>
        </id>
        <property name="name" column="NAME"/>
        <property name="birthday" column="BIRTHDAY"/>
    </class>
</hibernate-mapping>

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">
<hibernate-configuration>
    <session-factory>
        <property name="connection.driver_class">oracle.jdbc.OracleDriver</property>
        <property name="connection.url">数据库URL</property>
        <property name="connection.username">数据库用户名</property>
        <property name="connection.password">密码</property>

        <property name="connection.pool_size">1</property>

        <property name="dialect">org.hibernate.dialect.OracleDialect</property>

        <property name="current_session_context_class">thread</property>

        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

        <property name="show_sql">true</property>

        <mapping resource="com/Person.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

测试Main.java

package com;

import java.util.Date;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class Main {
	private static SessionFactory sessionFactory = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory();
	private static Session session=sessionFactory.getCurrentSession();
	
	public static void main(String[] args) {
		// get a person
		// System.out.println(getPerson("xiao_id"));
		
		// add a person
		// addPerson("xiao_id","xiao_name",new Date());
		
		// update a person
		// updatePerson("xiao_id","xiao_name_01",new Date());
		
		// delete a person
		// deletePerson("xiao_id");
	}
	// get a person 
	public static Person getPerson(String id){
		session.beginTransaction();
		Person person = (Person) session.get(Person.class, id);
		session.getTransaction().commit();
		return person;
	}
	
	// add a person
	public static void addPerson(String id,String name,Date birthday){
		Person person = new Person(id,name,birthday);
		session.beginTransaction();
		session.save(person);
		session.getTransaction().commit();
	}
	
	// update a person
	public static void updatePerson(String id,String name,Date birthday){
		Person person = new Person(id,name,birthday);
		session.beginTransaction();
		session.update(person);
		session.getTransaction().commit();
	}
	
	// delete a person
	public static void deletePerson(String id){
		session.beginTransaction();
		Person person = new Person();
		person.setId(id);
		session.delete(person);
		session.getTransaction().commit();
	}	
}