一、创建一个java project名为HibernateDemo1
然后导入hibernate包,eclipse中具体操作：
点击菜单栏windows->preferences->java->bulid path->User Libraries
然后new->输入hibernate（不勾选下边的选择框）->add external jars这时候就要选择包了，将下载的hibernate4.3.11目录lib下required中的jar文件全部加载。然后在项目上右键选择bulid path->add libraries->user libraries 然后选择刚才创建的hibernate。这时hibernate就加载进来了
然后再加载mysql驱动，项目上右键bulid path->add external archives 选择下载的mysql JDBC驱动包
二、在mysql数据库中创建测试表student
create database hibernate; use hibernate; create table student(
id int auto_increment primary key,
name varchar(20),
age int
);
三、写代码
创建包cn.orlion.hibernate.model,然后创建一个Student类：
package cn.orlion.hibernate.model;
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;
}
}
然后创建hibernate配置文件hibernate.cfg.xml,在src目录下创建这个文件，然后将参考文档中的配置copy进去（如下：）修改mysql配置，注释掉暂时用不到的项
<?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> <!-- 数据库连接配置 -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/hibernate</property>
<property name="connection.username">root</property>
<property name="connection.password"></property> <!-- hibernate自带JDBC 连接池，暂时不用注释掉 -->
<!-- <property name="connection.pool_size">1</property> --> <!-- 改成MySqlDialect(mysql的sql语句) -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property> <!-- Enable Hibernate's automatic session context management -->
<!-- <property name="current_session_context_class">thread</property> --> <!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property> <!-- 打印出所有的sql -->
<property name="show_sql">true</property> <!-- Drop and re-create the database schema on startup -->
<!-- <property name="hbm2ddl.auto">update</property> --> <mapping resource="cn/orlion/hibernate/model/Student.hbm.xml"/> </session-factory> </hibernate-configuration>
然后在cn.orlion.hibernate.model（跟实体类放一起）下创建文件Student.hbn.xml,从参考文档中copy修改
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="cn.orlion.hibernate.model">
<class name="Student" table="student"><!-- 如果表名与类名相同可以不用写table属性 -->
<!-- 用id映射主键 -->
<id name="id" column="id"> <!-- 列名相同可以不指定column属性 -->
</id> <property name="name" column="name"></property>
<property name="age"></property>
</class>
</hibernate-mapping>
然后创建一个包cn.orlion.test创建类StudentTest
package cn.orlion.test; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; import cn.orlion.hibernate.model.Student; public class StudentTest { public static void main(String[] args){ Student s = new Student();
s.setId(1);
s.setName("test1");
s.setAge(1); Configuration cfg = new Configuration(); SessionFactory sf = cfg.configure().buildSessionFactory();// 这里会提示deprecated,但是按着参考文档会报错 Session session = sf.openSession(); session.beginTransaction();
session.save(s);
session.getTransaction().commit(); session.close(); sf.close();
}
}
右键然后运行就可以看到数据库中存入了一条数据：