java – Hibernate不会创建表 – Spring MVC
发布时间:2020-12-15 04:17:59 所属栏目:Java 来源:网络整理
导读:我有春天项目,我正在使用休眠.当我开始项目时,db没有变化. 我尝试了difrenf配置,但没有工作. 什么想法可能是错的? Hibernate在servlet.xml中配置: beans:beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XM
我有春天项目,我正在使用休眠.当我开始项目时,db没有变化.
我尝试了difrenf配置,但没有工作. 什么想法可能是错的? Hibernate在servlet.xml中配置: <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" /> 解决方法
使用
<prop key="hibernate.hbm2ddl.auto">create</prop> 根据文档,update会更新现有架构. link供参考. 简单来说, 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 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |