1.创建项目,项目名称hibernatedemo3,目录结构如图所示
2.在项目中创建lib目录存储jar文件,目录结构如图所示
3.在src目录中创建实体Bean Forum,包名(com.mycompany.demo.bean),如图所示
4.实体Bean Forum的内容如下
package com.mycompany.demo.bean;
public class Forum {
private int fid;
private String name;
public Forum() {
super();
}
public Forum(String name) {
super();
this.name = name;
}
public int getFid() {
return fid;
}
public void setFid(int fid) {
this.fid = fid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + fid;
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Forum other = (Forum) obj;
if (fid != other.fid)
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
return true;
}
}
5.在src目录中创建实体Bean Forum的映射文件Forum.hbm.xml,包名(com.mycompany.demo.bean),如图所示
6.映射文件Forum.hbm.xml的内容如下
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.mycompany.demo.bean.Forum" table="hnsq_forum">
<meta attribute="class-description">
This class contains the forum detail.
</meta>
<id name="fid" type="int" column="fid">
<generator class="native"/>
</id>
<property name="name" column="name" type="string"/>
</class>
</hibernate-mapping>
7.在src目录中创建工具类 HbnUtil,包名(com.mycompany.demo.util),如图所示
8.工具类 HbnUtil的内容如下
package com.mycompany.demo.util;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HbnUtil {
private static SessionFactory sessionFactory;
public static Session getSession(){
if(sessionFactory == null || sessionFactory.isClosed()){
sessionFactory = new Configuration().configure().buildSessionFactory();
}
return sessionFactory.getCurrentSession();
}
}
9.在src目录中创建Hibernate的配置文件hibernate.cfg.xml,如图所示
10.Hibernate的配置文件hibernate.cfg.xml的内容如下
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- Assume test is the database name -->
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/b_shequ_two</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.format_sql">true</property>
<!-- 事务环境一个线程对一个事务 -->
<property name="hibernate.current_session_context_class">thread</property>
<!-- List of XML mapping files -->
<mapping resource="com/mycompany/demo/bean/Forum.hbm.xml"/>
</session-factory>
</hibernate-configuration>
11.在项目中创建test目录存储测试文件,文件名称ManageForum,包名(com.mycompany.demo.bean),目录结构如图所示
12.ManageForum测试类的内容如下
package com.mycompany.demo.bean;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.junit.Test;
import com.mycompany.demo.util.HbnUtil;
public class ManageForum {
@Test
public void testAdd(){
//1.获取Session
Session session = HbnUtil.getSession();
Transaction transaction = null;
try {
//2.开启事务
transaction = session.beginTransaction();
//3.执行操作
Forum forum = new Forum("hbnutil");
session.save(forum);
//4.提交事务
transaction.commit();
} catch (Exception e) {
//5.回滚事务
if(transaction != null){
transaction.rollback();
}
e.printStackTrace();
}
}
}