Question

我已经阅读了很多帖子，列出了其他步骤，以确保JpaRepository中的save方法提交数据库中的记录。在transactionManager上使用代理/使用Transactional和REQUIRES_NEW作为传播等。但是我仍然无法获得我的用例的确切解决方案。这似乎是一个基本的用例，但有些东西不在这里。

的applicationContext.xml

<context:component-scan base-package="com.oracle.blog" />
 <jpa:repositories base-package="com.oracle.blog.repo" />
 <tx:annotation-driven/>

 <bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="org.apache.derby.jdbc.ClientDriver" />
    <property name="url"
        value="jdbc:derby://localhost:1527/MyDerby;create=true" />
    <property name="username" value="root" />
    <property name="password" value="root" />
 </bean>

 <bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
    <property name="packagesToScan" value="com.oracle.blog"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="databasePlatform" value="org.hibernate.dialect.DerbyDialect" />
        </bean>
    </property>
    <property name="jpaProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.DerbyDialect</prop>
            <prop key="hibernate.hbm2ddl.auto">create</prop>
            <prop key="hibernate.show_sql">true</prop>
            <prop key="hibernate.use_sql_comments">false</prop>
            <!-- <prop key="hbm2ddl.auto">update</prop> -->
        </props>
    </property>

 </bean>
 <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory" />
 </bean>

<bean id="authorDAO" class="com.oracle.blog.repo.AuthorDAO">
</bean>

AuthorDAO.java

@Transactional
public class AuthorDAO {

    @PersistenceContext
    private EntityManager em;


    @Autowired
    private AuthorRepository authorRep;


    @Transactional(propagation=Propagation.REQUIRES_NEW)
    public Author save(Author auth){
        //Author persistedAuth= authorRep.save(auth);
        Author persistedAuth = authorRep.saveAndFlush(auth);
        //authorRep.flush();
        return persistedAuth;
    }
}

我通过从AuthorDAO实例调用save方法从main调用它。请指出我可以在main方法/类中使用的任何注释。我尝试使用@Commit（在班级），@Transactional（在主要方法级别）

更新我通过应用程序上下文获取了AuthorDAO的bean实例：

AuthorDAO authDAO = (AuthorDAO)context.getBean("authorDAO");
        //authDAO.save(authObj);
        System.out.println(authDAO.save(authObj).getAuthorId());

在下面找到EntityManager日志。日志中没有任何问题。事实上，它正确地列出了要合并的实体。 save方法返回实体罚款。只是它没有被提交给DB。

INFO: Initialized JPA EntityManagerFactory for persistence unit 'default'
23:54:39.012 [main] DEBUG o.h.s.internal.StatisticsInitiator - Statistics initialized [enabled=false]
Author003 null
23:54:39.355 [main] DEBUG o.h.e.t.internal.TransactionImpl - begin
23:54:39.377 [main] DEBUG o.s.d.r.c.s.TransactionalRepositoryProxyPostProcessor$CustomAnnotationTransactionAttributeSource - Adding transactional method 'saveAndFlush' with attribute: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
23:54:39.405 [main] DEBUG org.hibernate.engine.spi.ActionQueue - Executing identity-insert immediately
23:54:39.408 [main] DEBUG org.hibernate.SQL - insert into Author (AUTHOR_ID, bio, email, name, PROFILE_LINK) values (default, ?, ?, ?, ?)
Hibernate: insert into Author (AUTHOR_ID, bio, email, name, PROFILE_LINK) values (default, ?, ?, ?, ?)
23:54:39.418 [main] DEBUG org.hibernate.SQL - values identity_val_local()
Hibernate: values identity_val_local()
23:54:39.422 [main] DEBUG o.h.id.IdentifierGeneratorHelper - Natively generated identity: 1
23:54:39.423 [main] DEBUG o.h.r.j.i.ResourceRegistryStandardImpl - HHH000387: ResultSet's statement was not registered
23:54:39.427 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Processing flush-time cascades
23:54:39.428 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Dirty checking collections
23:54:39.430 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Flushed: 0 insertions, 0 updates, 0 deletions to 1 objects
23:54:39.430 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Flushed: 0 (re)creations, 0 updates, 0 removals to 0 collections
23:54:39.431 [main] DEBUG o.h.internal.util.EntityPrinter - Listing entities:
23:54:39.431 [main] DEBUG o.h.internal.util.EntityPrinter - com.oracle.blog.src.Author{profileLink=http://changesagnblog.blogspot.in, name=Author003, bio=My third blog to be published on blogspot., authorId=1, email=yetagnakashdotm@gmail.com}
23:54:39.433 [main] DEBUG o.h.e.t.internal.TransactionImpl - committing
23:54:39.433 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Processing flush-time cascades
23:54:39.433 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Dirty checking collections
23:54:39.433 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Flushed: 0 insertions, 0 updates, 0 deletions to 1 objects
23:54:39.433 [main] DEBUG o.h.e.i.AbstractFlushingEventListener - Flushed: 0 (re)creations, 0 updates, 0 removals to 0 collections
23:54:39.433 [main] DEBUG o.h.internal.util.EntityPrinter - Listing entities:
23:54:39.433 [main] DEBUG o.h.internal.util.EntityPrinter - com.oracle.blog.src.Author{profileLink=http://changesagnblog.blogspot.in, name=Author003, bio=My third blog to be published on blogspot., authorId=1, email=yetagnakashdotm@gmail.com}

解决确保在将Java Bean列为JPA实体时，在@Table注释中提及正确的表名和模式名称详细了解正确实施here

JpaRepository save方法不使用Derby DB提交

0 个答案: