为了追踪hibernate
信息 <property name="hibernate.show_sql">true</property>新建User类:
@Entity
@Table(name="E_USER",uniqueConstra
s={
@UniqueConstra(columnNames={"yahoo"})
})
public 
User {
private id;
private String yahoo; //昵称唯
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public getId
{
id;
}
public void 
Id( id) {
this.id = id;
}
public String getYahoo {
yahoo;
}
public void Yahoo(String yahoo) {
this.yahoo = yahoo;
}
}创建表 首先在hibernate.cfg.xml里配置<mapping
="com.eric.po.User"/>介绍说明:使用annoation同样可以接受.hbm.xml文件1
以手动创建 DROP TABLE IF EXISTS `e_user`;
CREATE TABLE `e_user` (
`id` (11) NOT NULL auto_increment,
`yahoo` varchar(255) default NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `yahoo` (`yahoo`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;2
使用<property name="hbm2ddl.auto">create</property>属性来自动创建3
SchemaExport : 
SchemaExport( AnnotationConfiguration.configure).create(true,true);create(true,true):两个参数:
Java代码
* @param script pr the DDL to the console
* @param export export the script to the databasehibernate建表语句:
drop table 
exists E_USER
create table E_USER (id eger not null auto_increment, yahoo varchar(255), primary key (id), unique (yahoo))
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