Hibernate开始上手总结

1,导入hibernate 的jar包,c3p0jar包

2,创建和表关联的实体类,创建关联实体类的配置文件

package com.entity;

public class News {

    private Integer id;
    
    private String title;
    
    private String content;

    public Integer getId() {
        return id;
    }

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

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
    
}

<?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="com.entity">
    
    <class name="News" table="news_table">
        <id name="id"><generator class="identity"/></id>
        <property name="title"/>
        <property name="content"/>
    </class>
    
<!--     <class name="Parent">
        <id name="name"/>
        <list name="children" fetch="subselect" cascade="persist, delete">
            <key column="parentName" not-null="true"/>
            <list-index column="loc"/>
            <one-to-many class="Child"/>
        </list>
        <list name="moreChildren" table="ParentChild" fetch="subselect">
            <key column="parentName" not-null="true"/>
            <list-index column="loc"/>
            <many-to-many class="Child" column="childName"/>
        </list>
    </class> -->
        
</hibernate-mapping>

然后吗,自己看注释去...

package com.hirbernate;

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

import com.entity.News;

public class NewsManager {

    @SuppressWarnings("deprecation")
    public static void main(String[] args) {
        //默认加载src下hibernate.cfg.xml文件,不行就自己另行指定,我还是自己来吧
        Configuration configuration = new Configuration().configure("config/hibernate.cfg.xml");
        //用configuration创建SessionFactory
        SessionFactory sessionFactory =    configuration.buildSessionFactory();
        //创建session
        Session session =sessionFactory.openSession();
        //开始事务
        Transaction trans = session.beginTransaction();
        //创建消息实例
        News news = new News();
        //设置实例值
        news.setTitle("ddd");
        news.setContent("ddddd");
        session.save(news);
        
        //提交当前事务
        trans.commit();
        //关闭session
        session.close();
        //关闭sessionfactory
        sessionFactory.close();
    }
    
}