hibernate-release-5.0.6.Final简单环境搭建

Bertha 。 2022-08-19 12:25 94阅读 0赞

## 第一步：下载hibernate ##

去hibernate官网下载hibernate的最新版

http://hibernate.org/orm/downloads/

将下载的hibernate-release-5.0.6.Final.zip解压

### hibernate的目录结构 ###

documentation目录是hibernate的文档
    
        lib目录是hibernate所需jar包
    
        project是hibernate提供的示例
    
        changelog.txt是hibernate的更新说明
    
        hibernate_logo.gif是hibernate的图标
    
        lgpl.txt是一个LICENSE

## 第二步：添加jar包 ##

### 将lib目录下required文件夹中的所有jar包添加到项目的classpath下 ###

### 将lib/optional/c3p0目录下的所有jar包添加到项目的classpath下 ###

### hibernate还需要连接数据库，将mysql-connector-java-xxx.jar添加到项目的classpath下 ###

## 第三步：编写hibernate配置文件hibernate.cfg.xml ##

hibernate.cfg.xml如下

<?xml version="1.0" encoding="GBK"?>
    <!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="connection.driver_class">com.mysql.jdbc.Driver</property>
            
            <property name="connection.url">jdbc:mysql://localhost/hibernate_test</property>
            
            <property name="connection.username">root</property>
            
            <property name="connection.password">cheng</property>
            
            <property name="hibernate.c3p0.max_size">20</property>
            
            <property name="hibernate.c3p0.min_size">1</property>
            
            <property name="hibernate.c3p0.timeout">5000</property>
            
            <property name="hibernate.c3p0.max_statements">100</property>
            <property name="hibernate.c3p0.idle_test_period">3000</property>
            <property name="hibernate.c3p0.acquire_increment">2</property>
            <property name="hibernate.c3p0.validate">true</property>
            
            <property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
            
            <property name="hbm2ddl.auto">update</property>
            
            <property name="show_sql">true</property>
            
            <property name="hibernate.format_sql">true</property>
            
            <property name="hibernate.temp.use_jdbc_metadata_defaults">false</property>
            
            <mapping class="com.test.dao.News"/>
        </session-factory>
    </hibernate-configuration>

将hibernate.cfg.xml放在src目录下

## 第四步：编写pojo并添加注解 ##

package com.test.dao;
    
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.GenerationType;
    import javax.persistence.Id;
    import javax.persistence.Table;
    
    @Entity
    @Table(name="news_inf")
    public class News {
        @Id//主键
        @GeneratedValue(strategy=GenerationType.IDENTITY)//自动增长
        private Integer id;
        // 消息标题
        private String title;
        // 消息内容
        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;
        }
    }

## 第五步：测试 ##

package com.test.dao;
    
    import org.hibernate.Session;
    import org.hibernate.SessionFactory;
    import org.hibernate.boot.MetadataSources;
    import org.hibernate.boot.registry.StandardServiceRegistry;
    import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
    
    public class Test {
    
        public static void main(String[] args) {
            final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
                    .configure() // configures settings from hibernate.cfg.xml
                    .build();
            SessionFactory sessionFactory = null;
            Session session = null;
            try {
                sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();
                session = sessionFactory.openSession();
                //开始事务
                session.beginTransaction();
                //创建对象
                News news = new News();
                news.setContent("123");
                news.setTitle("678");
                //保存对象
                session.save(news);
                //提交事务
                session.getTransaction().commit();
                //关闭session
    
            }
            catch (Exception e) {
                session.getTransaction().rollback();
                StandardServiceRegistryBuilder.destroy( registry );
            }finally{
                session.close();
                sessionFactory.close();
            }
        }
    }

如图

![这里写图片描述][20160114151101682]

参考文献

> [http://docs.jboss.org/hibernate/orm/5.0/quickstart/html/][http_docs.jboss.org_hibernate_orm_5.0_quickstart_html]

[20160114151101682]: /images/20220731/59fc9d1c970d4732b92fed93f8f19817.png
[http_docs.jboss.org_hibernate_orm_5.0_quickstart_html]: http://docs.jboss.org/hibernate/orm/5.0/quickstart/html/