Java 弹簧石英的问题

我试图基于某个间隔时间调用该方法，下面是applicationContext.xml中的一些bean

<bean id="MngtTarget"
  class="com.management.engine.Implementation" 
  abstract="false" lazy-init="true" autowire="default" dependency-check="default">

    <bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
      <property name="targetObject" ref="MngtTarget" />
      <property name="targetMethod" value="findItemByPIdEndDate"/>
    </bean>


    <bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">

        <property name="jobDetail" ref="jobDetail" />
        <!-- 10 seconds -->
        <property name="startDelay" value="10000" />
        <!-- repeat every 50 seconds -->
        <property name="repeatInterval" value="20000" />
    </bean>


    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="simpleTrigger" />
            </list>
        </property>
    </bean>

<bean name="myJob" class="org.springframework.scheduling.quartz.JobDetailBean">  
  <property name="jobClass" value="com.somecompany.worker.MyQuartzJob" />
  <property name="jobDataAsMap">
    <map>
      <entry key="hibernateSessionFactory" value-ref="sessionFactory" />
      <entry key="someDataDao" value-ref="someDataDao" />
    </map>
  </property>
</bean>

到目前为止，我已经花了很多时间在谷歌上搜索，我也尝试过这样修改我的方法：

 public List<Long> I need findItemByPIdEndDate() throws Exception {

                    List<Long> list = null;

                    try{
                            Session session = sessionFactory.openSession();

                            Query query = session.getNamedQuery("endDateChecker");
                            list =  query.list();

                            for(int i=0; i<list.size(); i++)
                            {
                                    System.out.println(list.get(i));
                            }

                            System.out.println("Total " + list.size());
                            session.close();
                    }catch (HibernateException e){
                            throw new DataAccessException(e.getMessage());
                    }

                    return list;
            }

对于第二个错误（“无法执行查询”），我不知道，我真的很想知道会话是什么样子

实际上，AFAIK，持久性上下文对Quartz作业不可用，因为没有任何东西可以为它们建立Hibernate会话（Quartz在servlet上下文之外运行，而opensession-In-view模式在这里不适用）。这就是为什么会出现第一个错误（“没有绑定到线程的hibernate会话”）

中介绍了一种解决方案。在这篇文章中，作者展示了如何使用SpringAOP代理连接hibernate拦截器，该拦截器允许您访问持久性上下文，并负责为您关闭和打开会话

虽然我自己没有测试它，但它应该可以工作。

我也面临同样的“Hibernate异常：没有绑定到线程的Hibernate会话”异常

2012-01-13 13:16:15.005 DEBUG MyQuartzJob Caught an exception 
org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)
at org.hibernate.impl.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:687)
at com.company.somemodule.dao.hibernate.AbstractHibernateDaoImpl.getSession(AbstractHibernateDaoImpl.java:107)
at com.company.somemodule.dao.hibernate.SomeDataDaoImpl.retrieveSomeData(SomeDataDaoImpl.java:264)

我通过下面的例子解决了这个问题

相关代码

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.orm.hibernate3.SessionFactoryUtils;
import org.springframework.orm.hibernate3.SessionHolder;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.transaction.support.TransactionSynchronizationManager;

import com.company.somemodule.dao.SomeDataDao;
import com.company.somemodule.SomeData;

public class MyQuartzJob extends QuartzJobBean implements Runnable {

  private boolean existingTransaction;
  private JobExecutionContext jobExecCtx;
  private static Logger logger = LoggerFactory.getLogger(MyQuartzJob.class);
  private SomeDataDao someDataDao; //set by Spring
  private Session session;
  private SessionFactory hibernateSessionFactory; //set by Spring

  protected void executeInternal(JobExecutionContext ctx) throws JobExecutionException 
    this.jobExecCtx = ctx;
    run();
  }

  private void handleHibernateTransactionIntricacies() {
    session = SessionFactoryUtils.getSession(hibernateSessionFactory, true);
    existingTransaction = SessionFactoryUtils.isSessionTransactional(session, hibernateSessionFactory);
    if (existingTransaction) {
        logger.debug("Found thread-bound Session for Quartz job");
    } else {
        TransactionSynchronizationManager.bindResource(hibernateSessionFactory, new SessionHolder(session));
    }
  }


  private void releaseHibernateSessionConditionally() {
    if (existingTransaction) {
        logger.debug("Not closing pre-bound Hibernate Session after TransactionalQuartzTask");
    } else {
        TransactionSynchronizationManager.unbindResource(hibernateSessionFactory);
        SessionFactoryUtils.releaseSession(session, hibernateSessionFactory);
    }
  }

  @Override
  public void run() {
    // ..

    // Do the required to avoid HibernateException: No Hibernate Session bound to thread
    handleHibernateTransactionIntricacies();

    // Do the transactional operations
    try {

        // Do DAO related operations ..

    } finally {
        releaseHibernateSessionConditionally();
    }
  }

  public void setHibernateSessionFactory(SessionFactory hibernateSessionFactory) {
    this.hibernateSessionFactory = hibernateSessionFactory;
  }

  public void setSomeDataDao(SomeDataDao someDataDao ) {
    this.someDataDao = someDataDao ;
  }
}

applicationContext.xml中的相关bean配置

<bean id="MngtTarget"
  class="com.management.engine.Implementation" 
  abstract="false" lazy-init="true" autowire="default" dependency-check="default">

    <bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
      <property name="targetObject" ref="MngtTarget" />
      <property name="targetMethod" value="findItemByPIdEndDate"/>
    </bean>


    <bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">

        <property name="jobDetail" ref="jobDetail" />
        <!-- 10 seconds -->
        <property name="startDelay" value="10000" />
        <!-- repeat every 50 seconds -->
        <property name="repeatInterval" value="20000" />
    </bean>


    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="simpleTrigger" />
            </list>
        </property>
    </bean>

<bean name="myJob" class="org.springframework.scheduling.quartz.JobDetailBean">  
  <property name="jobClass" value="com.somecompany.worker.MyQuartzJob" />
  <property name="jobDataAsMap">
    <map>
      <entry key="hibernateSessionFactory" value-ref="sessionFactory" />
      <entry key="someDataDao" value-ref="someDataDao" />
    </map>
  </property>
</bean>

有一个漏洞 还有解决办法。 使用hibernate配置会话。使用此类配置当前会话上下文类属性：

---

请添加您的Hibernate配置只需打印查询对象，然后查看您是否获得预期的查询

'endDateChecker'

您从哪里获得会话？我看不到您在任何地方将sessionFactory注入到对象中…谢谢m8，这不是解决方案，但它让我找到了一个，因此它符合正确答案的条件。我很高兴能帮上忙。然而，你能不能详细说明一下“这不是解决方案”，这样我就可以更新这个答案了？提前谢谢。

<bean name="myJob" class="org.springframework.scheduling.quartz.JobDetailBean">  
  <property name="jobClass" value="com.somecompany.worker.MyQuartzJob" />
  <property name="jobDataAsMap">
    <map>
      <entry key="hibernateSessionFactory" value-ref="sessionFactory" />
      <entry key="someDataDao" value-ref="someDataDao" />
    </map>
  </property>
</bean>