Hibernate创建步骤
（五大核心接口：Configuration/SessionFactory/Session/Transaction/Query）
1.新建java工程，导入需要的jar包。
2.创建hibernate.cfg.xml配置文件和Test.java工具类。配置好相应的实体对象User.java User.hbm.xml 生成的主要内容如下：
3.导入mysql的jar包 mysql-connector-java-5.1.7-bin.jar
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!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://127.0.0.1:3306/hib</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">admin</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.show_sql">true</property>
<property name="show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">create</property> <mapping resource="com/entity/User.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Test.java
package javaHibernateDemo; import org.hibernate.HibernateException;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.classic.Session;
import com.entity.User; public class Test {
public static void main(String[] args) {
//通过Configuration调用 configure方法 去查找 项目中classpath下hibernate.cfg.xml文件
//通过hibernate.cfg.xml文件中的信息 创造sessionfactory
SessionFactory factory = new Configuration().configure()
.buildSessionFactory();
//SessionFactory 制造session 类似与JDBC中的连接，通过session可以访问数据库
Session session = factory.openSession();
Transaction tx = session.beginTransaction();// 开启事务 try {
User user = new User();// 造对象
user.setAge(34);
user.setName("litiang");
user.setPassword("123456"); session.save(user);// 把对象保存到数据库 tx.commit();// 提交事务
} catch (HibernateException e) { if (null != tx)
tx.rollback();
} finally {
session.close();
}
}
}
User.hbm.xml
<?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="com.entity.User" table="User">
<id name="id" column="ID" type="java.lang.Integer">
<generator class="native" />
</id>
<property name="name" column="name" type="java.lang.String" />
<property name="password" column="password" type="java.lang.String" />
<property name="age" column="age" type="java.lang.Integer" />
</class>
</hibernate-mapping>
User.java
package com.entity;
public class User {
private int id;
private String name;
private String password;
private int age;
public int getId() {
return id;
}
public void setId(int 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 int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}