1 新建maven工程
1）打开eclipse，依次点击File---->New---->Maven Project.
2）选择org.apache.maven.archetypes maven-archetype-quickstart选项，点击next.
3）输入Group Id: com.binyulan 输入Artifact Id: persistence.
4）点击Finish.
2 打开pom.xml，引入所需依赖
1）引入Junit，用于单元测试
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
<scope>test</scope>
</dependency>
2）引入hibernate，用于持久化
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.2.Final</version>
</dependency>
3）引入mysql，用于存储数据
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
3 创建java端domain对象，并且编写映射文件，将domain对象中的字段与数据库中的字段一一对应
1）新建domain对象com.binyulan.domain.User
package com.binyulan.domain;
import java.sql.Date;
public class User {
private long id;
private String name;
private Date birthday;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
2）编写映射文件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">
<!-- Generated 2016-6-28 11:38:36 by Hibernate Tools 3.5.0.Final -->
<hibernate-mapping>
<class name="com.binyulan.domain.User" table="user">
<id name="id" type="long">
<column name="id" />
<generator class="native" />
</id>
<property name="name" type="java.lang.String">
<column name="name" />
</property>
<property name="birthday" type="java.sql.Date">
<column name="birthday" />
</property>
</class>
</hibernate-mapping>
4 创建hibernate配置文件，用于配置连接数据库信息，引入映射文件等。
<?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>
<!-- 数据库驱动名称 -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- 数据库链接地址 -->
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/binyulan</property>
<!-- 数据库用户名称 -->
<property name="hibernate.connection.username">root</property>
<!-- 数据库密码 -->
<property name="connection.password">123456</property>
<!-- 设置数据库SQL语言类型 -->
<property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
<!-- 设置是否显示SQL语句-->
<property name="show_sql">true</property>
<!-- 设置是否格式化SQL语句 -->
<property name="format_sql">true</property>
<!-- 自动建表，取值有四种：
create: 根据映射文件生成表， 每次执行都删除之前创建过的表
create-drop: 根据映射文件生成表，每次执行完毕都会删除表
update: 根据映射文件生成表，若以后表结构与映射文件不同，则更新表结构，但不会删除之前的记录，也不会删除映射文件中不存在的列
validate: 不会根据映射文件生成表，只会校验映射文件和表结构是否一致，不一致则抛异常
-->
<property name="hbm2ddl.auto">update</property>
<!-- 引入映射文件 -->
<mapping resource="com/binyulan/domain/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
5 编写测试类
package com.binyulan.persistence1; import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.junit.After;
import org.junit.Before;
import org.junit.Test; import com.binyulan.domain.User;
public class SimpleTest { private Session session;
private Transaction transaction;
@Before
public void init(){
Configuration cfg = new Configuration().configure();
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(cfg.getProperties()).build();
session = cfg.buildSessionFactory(serviceRegistry).openSession();
transaction = session.beginTransaction();
} @After
public void destory(){
transaction.commit();
session.close();
} @Test
public void testSave() {
try {
User user = new User();
user.setBirthday(new java.sql.Date(0));
user.setName("abc");
session.save(user);
} catch (HibernateException e) {
if (transaction != null) {
transaction.rollback();
}
throw e;
}
}
}
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