1、项目结构
2、hibernate实现了Java类 和 数据库表的映射（Map）
先看一下Student的Java类和对应的数据库表
package com.pt.hibernate;
public class Student {
private int id;
private String name;
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 int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
Student.java
创建Student表的SQL语句
CREATE TABLE `student` (
`Id` int(20) NOT NULL,
`Name` varchar(20) DEFAULT NULL,
`Age` int(3) DEFAULT NULL,
PRIMARY KEY (`Id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
Creat table
3、通过student.xml配置文件，将Java类和数据库表关联起来
<?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 package="com.pt.hibernate">
<class name="Student" table="student">
<id name="id" column="id" ></id>
<property name="name" column="name" ></property>
<property name="age" column="age" ></property>
</class>
</hibernate-mapping>
Student.xml
4、通过hibernate.cfg.xml配置文件，初始化hibernate所需要的信息
<?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> <!-- Database connection settings -->
<!-- <property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
<property name="connection.url">jdbc:hsqldb:hsql://localhost/TestDB</property> --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=UTF-8</property>
<property name="connection.username">root</property>
<property name="connection.password"></property> <!-- SQL dialect -->
<property name="dialect">
org.hibernate.dialect.MySQLInnoDBDialect
</property>
<property name="show_sql">true</property>
<mapping resource="com/pt/hibernate/Student.xml"/>
</session-factory> </hibernate-configuration>
hibernate.cfg.xml
5、测试
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; import com.pt.hibernate.Student; public class StudentTest {
public static void main(String[] arges){
Student s= new Student();
s.setId(20111901);
s.setName("panteng");
s.setAge(23);
Configuration cfg = new Configuration();
SessionFactory sessionFactory = cfg.configure().buildSessionFactory();
Session session = sessionFactory.openSession();
session.beginTransaction();
session.save(s);
session.getTransaction().commit();
session.close();
sessionFactory.close(); }
}
StudentTest