/Hibernate_0100_HelloWorld

/Hibernate_0100_HelloWorld:

一、src下面两个package:

1、default package里面:创建了并初始化Student对象;通过Configuration、SessionFactory、openSession方法来获得session,从而来调用session的方法。而让我疑惑的是为何在使用session方法时,调用了sesion.beginTransaction。

 1         Student s = new Student();
 2         
 3         s.setId(1);
 4         s.setName("s1");
 5         s.setAge(24);
 6         
 7         Configuration cfg = new Configuration();
 8         SessionFactory sf = cfg.configure().buildSessionFactory();
 9         Session session = sf.openSession();
10         session.beginTransaction();
11         session.save(s);
12         session.getTransaction().commit();
13         session.close();
14         sf.close();

2、com.xxc.hibernate.model里面:

编写了Student.java和Student.hbm.xml。Student.java实现domain model;Student.hbm.xml实现hibernate-mapping,既然是mapping,那么肯定会同时有类属性和table表项

 1 <hibernate-mapping package="com.xxc.hibernate.model">
 2 
 3     <class name="Student" table="student">
 4     
 5          <id name="id"></id>
 6             <property name = "name"></property>
 7             <property name = "age"></property>
 8        
 9     </class>
10 
11 </hibernate-mapping>

3、hibernate.cfg.xml

1         <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
2         <property name="connection.url">jdbc:mysql://localhost/hibernate</property>
3         <property name="connection.username">root</property>
4         <property name="connection.password">32147</property>
5 
6 
7     <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
8 
9  <mapping resource="com/xxc/hibernate/model/Student.hbm.xml"/>

注意dialect中MySQLDialect,而不是MYSQLDialect

 

posted @ 2013-03-18 23:51  hi_stefen  Views(176)  Comments(0)    收藏  举报