NotNull无效,Column(nullable = false)正常工作

Question

我有一个Spring实体,其中有一个用@NotNull注释的字段来自javax.validation.constraints

@Entity
public abstract class IdentifiableNamedEntity {
    @NotNull
    @Column(unique = true)
    private String name;
}

问题是如果为name字段设置null值,它将存储在数据库中.但是,如果我按照以下方式更改类,则会引发我希望收到的异常:

@Entity
public abstract class IdentifiableNamedEntity {
    @Column(unique = true, nullable=false)
    private String name;
}

有没有办法可以避免指定nullable = false,但让@NotNull按照我的意愿行事？是否有任何替代nullable = false依赖于标准Java注释,例如一些Hibernate配置？

这是我的弹簧配置:

的ApplicationContext

<beans ...>
<context:property-placeholder location="classpath*:spring/database.properties" />
<context:component-scan base-package="com.lh.clte" />
<import resource="classpath:spring/applicationContext-persistence.xml" />
</beans>

的applicationContext持久性

<beans ...>
<import resource="classpath:spring/applicationContext-jpa.xml" />

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close">
    <property name="driverClassName" value="${database.driverClassName}" />
    <property name="url" value="${database.url}" />
    <property name="username" value="${database.username}" />
    <property name="password" value="${database.password}" />
    <property name="initialSize" value="3" />
    <property name="maxActive" value="10" />
</bean>

<tx:annotation-driven mode="proxy"
    transaction-manager="transactionManager" />
<bean class="org.springframework.orm.jpa.JpaTransactionManager"
    id="transactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

<bean
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
    id="entityManagerFactory">
    <property name="persistenceUnitName" value="persistenceUnit" />
    <property name="dataSource" ref="dataSource" />
</bean>
</beans>

的applicationContext-JPA

<beans ...>
<jpa:repositories base-package="com.lh.clte.repository" />
</beans>

由于我使用的是存储库,我还报告了相应的实体存储库:

@Repository
public interface IdentifiableNamedEntityRepository extends JpaSpecificationExecutor<IdentifiableNamedEntity>, JpaRepository<IdentifiableNamedEntity, Long> {
}

Answer 1

@NotNull是一个JSR 303 Bean Validation注释.它与数据库约束本身无关.此注释旨在用于验证. @Column(nullable = false)是声明列不为null的方法.最后一个注释用于指示数据库架构详细信息