第一个hibernate5.1.0--向数据库中插入一条数据

首先，新建好一个数据库hibernate;

在这个数据库中创建一个表student，指定好主键，还有其余几列：create table student(id int primary key,name varchar(20),age int);

见一个项目，创建好一个包com.hibernate.demo；

在这个包中新建一个Student类：

package com.hibernate.demo;

public class Student {

	private int id;
	private String name;
	private int age;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
	
}

新建好hibernate的配置文件，命名为hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!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>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/hibernate</property>
<property name="connection.username">root</property>
<property name="connection.password">123456</property>
<!-- JDBC connection pool (use the built-in) -->
<!-- <property name="connection.pool_size">1</property> -->
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.HSQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<!--  <property name="current_session_context_class">thread</property> -->
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<!-- <property name="hbm2ddl.auto">update</property>  -->
<mapping resource="com/hibernate/demo/student.hbm.xml"/>
</session-factory>
</hibernate-configuration>

新建一个Student类的映射xml,命名：student.hbm.xml:

<?xml version="1.0"?>
<!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.hibernate.demo">

	<class name="Student">
	
		<id name="id"></id>
		<property name="name"></property>
		<property name="age"></property>	
	</class>

</hibernate-mapping>

最后编写测试类StudentTest：

package com.hibernate.test;

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

import com.hibernate.demo.Student;

public class StudentTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Student s = new Student();
		s.setId(1);
		s.setName("s1");
		s.setAge(1);
		
		Configuration cfg = new Configuration();
		SessionFactory sf = cfg.configure().buildSessionFactory();
		Session session = sf.openSession();
		session.beginTransaction();
		session.save(s);
		session.getTransaction().commit();
		session.close();
		sf.close();

	}

}

在此项目中需要导入的包，有hibernate5.1.0所有require包以及连接mysql的驱动包。