1.1.  新建一个java工程jpaDemo1

1.2.  在工程下新建一个lib文件夹，用来存放jar包

1.3.  引入下面的jar包

所使用hibernat版本：hibernate-release-4.3.7.Final

Lib\jpa目录和lib\required目录下所有的jar包，mysql驱动包

jpa入门案例_hibernate

1.4.  Src下新建META-INF目录

1.5.  META-INF目录下新建persistence.xml

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
  
<!-- persistence-unit 
       name指定持久化单元的名字
       transaction-type指定事务类型为本地事务
  -->
<persistence-unit name="jpaDemo" transaction-type="RESOURCE_LOCAL">
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
<property name="hibernate.connection.username" value="root"/>
<property name="hibernate.connection.password" value="root"/>
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=UTF-8"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.show_sql" value="true"/>
</properties>
</persistence-unit>
</persistence>

1.6.  新建实体类Person.java

Person.java

package com.morris.entity;
 
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
 
@Entity
public  class Person {
 
@Id
@GeneratedValue
    private Integer id;
 
    private String name;
 
    private Integer age;
 
    public Integer getId() {
       return id;
    }
 
    public  void setId(Integer id) {
       this.id
    }
 
    public String getName() {
       return name;
    }
 
    public  void setName(String name) {
       this.name
    }
 
    public Integer getAge() {
       return age;
    }
 
    public  void setAge(Integer age) {
       this.age
    }
 
    public Person( String name, Integer age) {
       super();
       this.name
       this.age
    }
 
    public Person() {
       super();
// TODO Auto-generated constructor stub
    }
 
@Override
    public String toString() {
       return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";
    }
 
}

1.7.  新建测试类TestPerson.java

TestPerson.java

package com.morris.entity;
 
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
 
import org.junit.Test;
 
public  class TestPerson {
 
    
@Test
    public  void save() {
 
//实体管理工厂类 jpaDemo为配置文件中持久化单元名
       EntityManagerFactory factory = Persistence.createEntityManagerFactory("jpaDemo");
//尸体管理器
       EntityManager manager = factory.createEntityManager();
       
//开始事务
       manager.getTransaction().begin();
//持久化person对象
       manager.persist(new Person("morris", 22));
       
//提交事务
       manager.getTransaction().commit();
       
//关闭资源
       manager.close();
       
       factory.close();
       
       
    }
 
}

1.8.  运行结果

后台打印sql语句：

Hibernate: insert into Person (age, name) values (?, ?)