使用Annotation入门

1.在User Library 如：hibernate3.3中导入jar

?hibernate-annotations-3.4.0.GA\hibernate-annotations.jar;
?hibernate-annotations-3.4.0.GA\lib\ejb3-persistence.jar;
?hibernate-annotations-3.4.0.GA\lib\hibernate-commons-annotations.jar

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2.新建表teacher

package com.fengyun.shopping.entity;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;public class StudentTest { public static void main(String[] args) {  Student s = new Student();  s.setId(1);  s.setName("wanghao");  s.setAge(12);    Configuration cfg = new Configuration();  SessionFactory sf = cfg.configure().buildSessionFactory();  Session session = sf.openSession();  session.beginTransaction();  session.save(s);  session.getTransaction().commit();  session.close();  sf.close(); }}

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5.修改IDE配置，输入@马上出现提示

window-->perferences-->Java-->Editor-->Content Asist下设置：
?Auto activation delay：100
?Auto activation triggers for Java：.@
?Auto activation triggers for Javadoc:#

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6.如果是Annotation与XML配置文件混合使用，获得Configuration对象都要使用new AnnotationConfiguration();
异常：
org.hibernate.MappingException: An AnnotationConfiguration instance is required to use <mapping class="com.fengyun.shopping.entity.Teacher"/>