java - Swing + Spring + @Transactional = 不启动事务

Question

我正在研究在 Swing 应用程序上使用 Spring 的可能性，应用 MVC 概念。

现在我尝试创建一个 @Transactional 方法，但它不会启动事务。

这是我的代码:

@Component
public class MainFormController {

    @Autowired
    private MainFormFrameView view;

    @Autowired
    private MyService service;

    public MainFormController() {
    view.button.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            doSomethingInTransaction();
        }
    });
    }

    @Transactional
    public void doSomethingInTransaction() {
        if (!TransactionSynchronizationManager.isActualTransactionActive()) {
           throw new IllegalStateException("No active transaction!!!!");
        }
        service.doSomethingOverTheTransaction();
    }
}

这是我的配置:

@Configuration
@ComponentScan(basePackages = "br.com.jjw.pdv")
@EnableTransactionManagement
public class AppContextConfiguration {

    @Bean
    public DataSource dataSource() throws PropertyVetoException {
        ComboPooledDataSource ret = new ComboPooledDataSource();

        ret.setDriverClass(jdbcDriver.class.getName());
        ret.setJdbcUrl("jdbc:hsqldb:file:dados.hsql");
        ret.setUser("sa");
        ret.setPassword("");

        return ret;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws PropertyVetoException {
        LocalContainerEntityManagerFactoryBean ret = new LocalContainerEntityManagerFactoryBean();
        ret.setDataSource(dataSource());
        ret.setJpaDialect(jpaDialect());

        EclipseLinkJpaVendorAdapter adapter = new EclipseLinkJpaVendorAdapter();
        adapter.setDatabase(Database.HSQL);

        ret.setJpaVendorAdapter(adapter);
        ret.setPersistenceXmlLocation("classpath:META-INF/persistence.xml");
        ret.setPersistenceUnitName("jjw-pdv-unit");
        ret.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());

        return ret;
    }

    @Bean
    public JpaDialect jpaDialect() {
        return new EclipseLinkJpaDialect();
    }

    @Bean
    public PersistenceAnnotationBeanPostProcessor persistenceAnnotationBeanPostProcessor() {
        return new PersistenceAnnotationBeanPostProcessor();
    }

    @Bean
    public JpaTransactionManager transactionManager() throws PropertyVetoException {
        JpaTransactionManager ret = new JpaTransactionManager();
        ret.setEntityManagerFactory(entityManagerFactory().getNativeEntityManagerFactory());
        ret.setJpaDialect(jpaDialect());
        return ret;
    }

}

当我单击按钮时，doSomethingInTransaction() 方法引发异常:

 IllegalStateException("No active transaction!!!!");

为什么？

Answer 1

Spring AOP 基于代理，不建议进行内部调用。

您需要在 spring 提供的代理上进行调用，例如

 SomeTransactionalBean bean = 
           applicationContext.getBean(SomeTransactionalBean.class);

 bean.doSomethingInTrasanction();

例如，在服务方法上添加@Transactional注解。