使用schemaExport自动生成表结构

时间:2023-03-08 18:22:15
使用schemaExport自动生成表结构

一.Hibernate原生状态

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Configuration
cfg =
new

Configuration().configure();
SchemaExport
export =
new

SchemaExport(cfg);
export.create(true,
true);

二.Hibernate整合Spring

1.使用hibernate.cfg.xml原生配置

hibernate.cfg.xml同原生一样编写

在Spring主配置文件applicationContext中,引入hibernate.cfg.xml

使用SchemaExport生成数据库表的代码同上一致。

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Spring
applicationContext.xml
<bean

id
="sessionFactory"
   class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
      <property

name
="configLocation"
        value="file:src/hibernate.cfg.xml">
      </property>
</bean>

2.不使用hibernate.cfg.xml,在Spring的主配置文件applicationContext.xml中配置

完全不编写hibernate.cfg.xml,全部都在applicationContext.xml中配置

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ClassPathResource
ac =
new

ClassPathResource(
"applicationContext.xml");
     XmlBeanFactory
xbf =
new

XmlBeanFactory(ac);
     //注意:
&sessionFactory ,一定要包含 & ,不加Spring返回的是Hibernate下的SessionFactoryImpl类
     LocalSessionFactoryBean
lsfb=(LocalSessionFactoryBean) xbf.getBean(
"&sessionFactory");
     Configuration
cfg=lsfb.getConfiguration();
     SchemaExport
export=
new

SchemaExport(cfg);
     export.create(true,
false);
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<!--
配置数据源-->
 <bean

id
="dataSource"

class
="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property

name
="driverClassName"

value
="${jdbc.driverClassName}"/>
      <property

name
="url"

value
="${jdbc.url}"/>
      <property

name
="username"

value
="${jdbc.username}"/>
      <property

name
="password"

value
="${jdbc.password}"/>
 </bean>
 <!--
配置sessionfactory,该配置替代了hibernate.cfg.xml的配置 -->
 <bean

id
="sessionFactory"

class
="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property

name
="dataSource"

ref
="dataSource"></property>
    <property

name
="mappingResources">
      <list>
         <value>xxx/xxx/model/User.hbm.xml</value>
      </list>
    </property>
    <property

name
="hibernateProperties">
      <props>
         <prop

key
="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
         <prop

key
="hibernate.show_sql">true</prop>
         <prop

key
="hibernate.format_sql">true</prop>
      </props>
    </property>
 </bean>