Java Spring@Transactional在独立应用程序中不工作
我有一个独立的应用程序,试图在其中填充数据库。 我的应用程序配置如下所示:Java Spring@Transactional在独立应用程序中不工作,java,spring,hibernate,jpa,Java,Spring,Hibernate,Jpa,我有一个独立的应用程序,试图在其中填充数据库。 我的应用程序配置如下所示: @Configuration @EnableTransactionManagement @PropertySource(value = { "classpath:classpath property file" }) @ComponentScan(basePackages = { my packages to scan }) public class PersistenceJPAConfig { @Be
@Configuration
@EnableTransactionManagement
@PropertySource(value = { "classpath:classpath property file" })
@ComponentScan(basePackages = { my packages to scan })
public class PersistenceJPAConfig {
@Bean
public EntityManagerFactory entityManagerFactoryBean() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan(new String[] { packages to scan});
JpaVendorAdapter vendorAdapter = jpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setJpaProperties(additionalProperties());
em.afterPropertiesSet();
return em.getObject();
}
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
jpaVendorAdapter.setDatabase(Database.ORACLE);
return jpaVendorAdapter;
}
@Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
dataSource.setUrl(url);
dataSource.setUsername(dbUser);
dataSource.setPassword(dbPassword);
return dataSource;
}
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactoryBean());
return transactionManager;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
Properties additionalProperties() {
return new Properties() {
{ // Hibernate Specific:
setProperty("hibernate.hbm2ddl.auto", "validate");
setProperty("hibernate.dialect", "org.hibernate.dialect.Oracle10gDialect");
}
};
}
}
但是,当我尝试在数据库中持久化某些内容时,注释失败,出现错误:
线程“main”javax.persistence.TransactionRequiredException中出现异常:没有可用的事务EntityManager
在生成的错误堆栈中,我看不到应用了事务性建议
包含事务性注释的文件如下所示:
import org.springframework.transaction.annotation.Transactional;
@Service
public class MyService {
@Autowired
private MyDao myDao;
@Transactional
public void save(MyEntity e) {
myDao.save(e);
}
}
@Repository
public class MyDao {
@PersistenceContext
private EntityManager entityManager;
public void save(MyEntity e) {
entityManager.persist(e);
}
}
MyDao类是这样的:
import org.springframework.transaction.annotation.Transactional;
@Service
public class MyService {
@Autowired
private MyDao myDao;
@Transactional
public void save(MyEntity e) {
myDao.save(e);
}
}
@Repository
public class MyDao {
@PersistenceContext
private EntityManager entityManager;
public void save(MyEntity e) {
entityManager.persist(e);
}
}
我从Main方法调用函数,如下所示:
public static void main(String[] args) {
try (AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext()) {
ctx.scan(CONFIG_PACKAGE);
ctx.refresh();
myService = ctx.getBean(MyService.class);
Thread.sleep(10 * 1000);
myService.save(entity);
...
}
堆栈跟踪如下所示(经过编辑以删除与我的代码有关的过于特定的跟踪):
线程“main”javax.persistence.TransactionRequiredException中的异常:没有可用的事务EntityManager
位于org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:275)
位于com.sun.proxy.$Proxy27.persist(未知源)
在mypackage.MyDao.save(MyDao.java:42)
在mypackage.MyDao$$FastClassBySpringCGLIB$$758201c8.invoke()处
位于org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
位于org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)
在org.springframework.aop.framework.ReflectiveMethodInvocation.procedue(ReflectiveMethodInvocation.java:157)上
位于org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
在org.springframework.aop.framework.ReflectiveMethodInvocation.procedue(ReflectiveMethodInvocation.java:179)上
位于org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
在mypackage.MyDao$$EnhancerBySpringCGLIB$$9bd3b4fc.save()处
在mypackage.MyService.save处(MyService.java:176)
在mypackage.MyService$$FastClassBySpringCGLIB$$5c0a03f6.invoke()处
位于org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
位于org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:649)
位于mypackage.Run.main(Run.java:109)
有人能帮我解决这个问题吗?我可能做错了什么?
感谢您的帮助您需要在配置类中添加
@EnableJpaRepositories(basePackages=“base package”)
注释 你能发布完整的堆栈跟踪吗?另外,在main
方法中,entity
来自何处?添加了堆栈跟踪。在保存实体对象之前,我正在主方法本身中创建实体对象。您是否尝试在EntityManager
声明中使用@Autowired
而不是@PersistenceContext
?尝试过,但不起作用。添加过,不起作用。此外,不确定该注释将如何帮助事务管理?你能详细说明一下吗?