java - Spring + hibernate + quartz : Dynamic Job

Question

我想使用 Quartz、Spring 和 Hibernate 动态创建作业。用户与 Web 服务交互以创建此类作业:

public class StartJobSpring extends QuartzJobBean {

    private String jobId;
    private String jobType;

    @Autowired
    private NoaJobInstancesDAO njiDAO;

    @Transactional
    @Override
    protected void executeInternal(JobExecutionContext context)
            throws JobExecutionException {

        JobKey key = context.getJobDetail().getKey();
        JobDataMap dataMap = context.getMergedJobDataMap();

        // some logic
        njiDAO.create(instanceUUID, noaJob.getNoaJob(jobId), jobType);
    }
}

NoaJobInstancesDAO 是一个简单的 DAO 类，它利用 Hibernate 的EntityManager:

@Repository
public class NoaJobInstancesDAOHibImpl implements NoaJobInstancesDAO {

    @PersistenceContext
    private EntityManager entityManager;

    @Override
    @Transactional
    public NoaJobInstanceJPA create(NoaJobInstanceJPA entity) {
        entityManager.persist(entity);
        return entity;
    }

    @Override
    public void create(String instance_uuid, NoaJobJPA job, String job_type) {
        NoaJobInstanceJPA entity = new NoaJobInstanceJPA(instance_uuid, job,
                job_type, "CREATED", null, null, "", "N", "N");
        this.create(entity);
    } 
}

问题是当这个作业触发时，会抛出异常:

javax.persistence.TransactionRequiredException: No transactional EntityManager available

我不明白为什么! 我在 Manager 类中以这种方式安排工作

JobDetail job = newJob(StartJobSpring.class).withIdentity(//anId)
                .setJobData(//aJobMap).build();
getScheduler().getObject().scheduleJob(job, trigger);

调度程序连接到管理器的位置为

@Autowired
private ApplicationContext applicationContext;

@Bean
SchedulerFactoryBean schedulerFactoryBean(DataSource dataSource, JpaTransactionManager transactionManager) {

    SchedulerFactoryBean bean = new SchedulerFactoryBean();

    AutowiringSpringBeanJobFactory jobFactory = new AutowiringSpringBeanJobFactory();
    jobFactory.setApplicationContext(applicationContext);
    bean.setJobFactory(jobFactory);

    bean.setTransactionManager(transactionManager);

    return bean;
}

AutowiringSpringBeanJobFactory 类与 Autowiring 相同.

在我看来，调度程序接线有问题。事实上，我不明白如何检索应用程序上下文。

编辑1:应用程序上下文似乎已正确实例化。问题不可能在那里。

EDIT2: 我使用的是单个配置 bean(不是 xml 文件)。主要方法如下:

@Bean
LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource   dataSource) {
     LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
     entityManagerFactoryBean.setDataSource(dataSource);
     entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
     entityManagerFactoryBean.setPackagesToScan("package");

    Properties jpaProperties = new Properties();
    jpaProperties.put("hibernate.dialect", "org.hibernate.dialect.OracleDialect");
    jpaProperties.put("hibernate.show_sql", "false");
    jpaProperties.put("hibernate.hbm2ddl.auto", "update");

    entityManagerFactoryBean.setJpaProperties(jpaProperties);

    return entityManagerFactoryBean;
}

@Bean
JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
    JpaTransactionManager transactionManager = new JpaTransactionManager();
    transactionManager.setEntityManagerFactory(entityManagerFactory);
    return transactionManager;
}

@Bean
public NoaJobInstancesDAO noaJobInstancesDAO() {
    NoaJobInstancesDAOHibImpl noaJobInstancesDAO = new NoaJobInstancesDAOHibImpl();
    return noaJobInstancesDAO;
}

Answer 1

您位于 spring 管理的上下文中，并且尝试使用 @PersistentContext(这是一个 javax.persistence 注释)访问 EntityManager。尝试使用@Autowire Autowiring EntityManagerFactory bean，我假设您在spring-context.xml中配置它并使用entityManagerFactory.createEntityManager()为您提供spring管理的实体管理器，该管理器将由spring包装并位于您定义的事务管理器中