搭建简单的Habernate环境

Posted 2020-10-14 WangJunZzz

一、开篇

　　下载Habernate所需要的jar包和mysql驱动。

　　

二、建立java项目并且导入所需要的包

　　

三、建立实体类和配置映射文件

　　user实体类

package testPackage;

public class user {
	public String id;
	public String name;
	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;
	}
}

　　user配置文件

<?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>
	<class name="testPackage.user" table="user">
		<id name="id">
			<generator class="uuid"></generator>
		</id>
		<property name="name"/>
	</class>
</hibernate-mapping>

　　habernate.cfg.cml配置

<?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>
			<!-- 数据库连接设置 -->
			<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
			<property name="hibernate.connection.url">jdbc:mysql://120.78.155.**:3306/jwttoken</property>
	        <property name="hibernate.connection.username">root</property>
            <property name="connection.password">root</property>
            <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
            <property name="hibernate.hbm2ddl.auto">update</property>
            <property name="hibernate.show_sql">true</property>
            <property name="hibernate.format_sql">true</property>
            <mapping resource="testPackage/user.xml"/>
	</session-factory>
</hibernate-configuration>

四、测试

package testPackage;



import java.util.UUID;

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

public class demo {
	
	public static void main(String[] args)
	{
		user d=new user();
		d.id=UUID.randomUUID().toString().replaceAll("-", "");
		d.name="dirk";
		Configuration configure = new Configuration().configure();

		SessionFactory factory = configure.buildSessionFactory();
		Session session = factory.openSession();
		Transaction transaction= session.beginTransaction();
		session.save(d);
		transaction.commit();
		System.out.print("ok");
		
	}
}

 五、结果

　　

六、遇到的问题