Hibernate不会创建Table - Spring MVC [英] Hibernate doesn't create Table - Spring MVC
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问题描述
我有使用hibernate的春天项目。当我启动项目时,数据库没有变化。
I have spring project where I'm using hibernate. When I start project there is no change in db.
我尝试使用difrenf配置,但没有使用。
I try difrenf configurations but nothings worked.
想法什么可能是错误的?
Any ideas what can be wrong?
Hibernate在servlet.xml中配置:
Hibernate is configure in servlet.xml:
<beans:beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"
xmlns:beans="http://www.springframework.org/schema/beans">
<context:component-scan base-package="com.springapp.mvc"/>
<!--Data source has the database information -->
<beans:bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<beans:property name="driverClassName" value="org.postgresql.Driver"/>
<beans:property name="url" value="jdbc:postgresql://localhost:5432/Praktyki"/>
<beans:property name="username" value="dbusersolsoft"/>
<beans:property name="password" value="dbpassSolsoft"/>
</beans:bean>
<!-- Session Factory -->
<beans:bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource"/>
<beans:property name="packagesToScan">
<value>com.springapp.mvc.model</value>
</beans:property>
<!--<beans:property name="showSql" value="true" />-->
<!--<beans:property name="generateDdl" value="true" />-->
<beans:property name="hibernateProperties">
<beans:props>
<prop key="hibernate.dialect">org.hibernate.dialect.HSQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">false</prop>
</beans:props>
</beans:property>
</beans:bean>
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" />
推荐答案
使用
<prop key="hibernate.hbm2ddl.auto">create</prop>
根据文档,更新会更新现有模式。
As per the documentation, update updates the existing schema.
链接以供参考。
简而言之,
In brief,
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema at the end of the session.
auto : Automatically validates or exports schema DDL to the database when the SessionFactory is created
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