1.创建一个普通的java项目
2.加入Hibernate所有的jar包
3.建立包名com.bjpowernode.hibernate
4.建立实体类User.java
package com.bjpowernode.hibernate;
import java.util.Date;
public class User {
private String id;
private String name;
private String password;
private Date createTime;
private Date expireTime;
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;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public Date getExpireTime() {
return expireTime;
}
public void setExpireTime(Date expireTime) {
this.expireTime = expireTime;
}
}
5.提供User.hbm.xml文件,完成对User实体类的映射(和User.java在同一目录)
<?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.bjpowernode.hibernate.User">
<id name="id">
<generator class="uuid"></generator>
</id>
<property name="name"></property>
<property name="password"></property>
<property name="createTime"></property>
<property name="expireTime"></property>
</class>
</hibernate-mapping>
6.提供hibernate.cfg.xml文件,把User.hbm.xml文件加入(hibernate.cfg.xml放置的src文件下)
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://172.16.100.10:3306/hibernate_first?useUnicode=true&characterEncoding=GBK</property>
<property name="hibernate.connection.username">hibernate</property>
<property name="hibernate.connection.password">hibernate</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.show_sql">true</property> <mapping resource="com/bjpowernode/hibernate/User.hbm.xml"/>
<mapping resource="com/bjpowernode/hibernate/Student.hbm.xml"/>
</session-factory>
</hibernate-configuration>
7.编写工具类ExoprtDB.java,将hbm生成ddl
package com.bjpowernode.hibernate; import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport; public class ExportDB { public static void main(String[] args){
Configuration cfg = new Configuration().configure();
SchemaExport export = new SchemaExport(cfg);
export.create(true, true); }
}
8.建立客户端类Client，添加用户数据到mysql
package com.bjpowernode.hibernate; import java.util.Date; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; public class Client { public static void main(String[] args){
Configuration cfg = new Configuration().configure();
SessionFactory factory = cfg.buildSessionFactory();
Session session = null;
try{
session = factory.openSession();
session.beginTransaction();
User user = new User();
user.setName("张三");
user.setPassword("123");
user.setCreateTime(new Date());
user.setExpireTime(new Date());
session.save(user);
session.getTransaction().commit(); }catch (Exception e){
e.printStackTrace();
session.getTransaction().rollback(); } finally {
if(session != null && session.isOpen()){
session.close();
}
}
} }
9.项目目录树