项目环境

JDK 1.8
maven 3.6
Hibernate 5.5.0
MySql 5.7

创建一个maven项目

使用idea创建一个普通的maven项目就可以了。

添加相关依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>HibernateTest</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <!-- hibernate5.5.0依赖 -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.5.0.Final</version>
        </dependency>

        <!-- mysql依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>
        <!-- 单元测试依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
        </dependency>
    </dependencies>

    <build>
        <!-- 读取配置文件 -->
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

</project>

编写hibernate.cfg.xml配置文件

在resource文件夹下创建配置文件，写入以下信息

<?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>
		<!-- 显示sql语句 -->
		<property name="show_sql">true</property>
		<!-- 基础JDBC连接配置 -->
		<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="connection.url">jdbc:mysql:///hibernatetest</property>
		<property name="connection.username">root</property>
		<property name="connection.password">Good18882336322</property>
		<!-- 数据库方言 -->
		<property name="dialect">org.hibernate.dialect.MySQL57Dialect</property>

		<!-- 对象配置文件 -->
		<mapping resource="com/fizzyelf/entity/User.hbm.xml"/>
	</session-factory>
</hibernate-configuration>

创建一个实体类

这里创建一个User类做为演视

package com.fizzyelf.entity;

import lombok.Data;

@Data
public class User {
    private Integer id;
    private String userName;
    private String password;
}

创建类的映射配置文件

在类的包下在创建一个映射文件User.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="com.fizzyelf.entity.User" table="user" lazy="false">
        <id name="id" column="id">
            <!-- 主键自增 -->
            <generator class="native"/>
        </id>
        <property name="userName" column="user_name"/>
        <property name="password" column="password"/>
    </class>

</hibernate-mapping>

在数据库创建一个user表

测试代码

这里的代码我是从官方文档复制过来的。

package com.fizzyelf;

import com.fizzyelf.entity.User;
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;
import org.junit.Test;


public class HibernateTest {
    @Test
    public void Test(){
        // A SessionFactory is set up once for an application!
        // 一个SessionFactory为一个应用程序设置一次!

        // 初始化服务注册对象
        final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
                .configure() // 加载配置文件hibernate.cfg.xml
                .build();
        SessionFactory sessionFactory = null;
        try {
            // 获取SessionFactory
            sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();
            // 从SessionFactory创建Session连接
            Session session = sessionFactory.openSession();
            session.beginTransaction();
            User user = new User();
            user.setUserName("FizzyElf");
            user.setPassword("123");
            session.save(user);
            // 提交事务
            session.getTransaction().commit();
            session.close();
        }
        catch (Exception e) {
            // The registry would be destroyed by the SessionFactory, but we had trouble building the SessionFactory
            // so destroy it manually.
            System.out.println(e.getMessage());
            StandardServiceRegistryBuilder.destroy( registry );
        }

    }
}