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Quartz定时器中打开与关闭hibernateSession，这样对hibernate2级缓存进行了优化，在打开的session中可以维护lazy加载，这样提升了hibernate在Quartz中的使用效率。废话不多说了，上代码：

package com.net263.boss.charge.action;

import org.apache.log4j.Logger;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.orm.hibernate3.SessionFactoryUtils;
import org.springframework.orm.hibernate3.SessionHolder;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.transaction.support.TransactionSynchronizationManager;

public abstract class TransactionalQuartzTask extends QuartzJobBean {

private static Logger logger = Logger.getLogger(TransactionalQuartzTask.class);
private SessionFactory sessionFactory;

public SessionFactory getSessionFactory() {
return sessionFactory;
}

public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}

/**
* Most of this method is copied from the HibernateInterceptor.
*/
protected final void executeInternal(JobExecutionContext ctx)
throws JobExecutionException {
Session session = SessionFactoryUtils.getSession(sessionFactory, true);
boolean existingTransaction = SessionFactoryUtils
.isSessionTransactional(session, getSessionFactory());
if (existingTransaction) {
logger.info("Found thread-bound Session for TransactionalQuartzTask");
} else {
TransactionSynchronizationManager.bindResource(getSessionFactory(),
new SessionHolder(session));
}

try {
executeTransactional(ctx);
} catch (HibernateException ex) {
ex.printStackTrace();
throw ex;
} finally {
if (existingTransaction) {
logger.debug("Not closing pre-bound Hibernate Session after TransactionalQuartzTask");
} else {
TransactionSynchronizationManager
.unbindResource(getSessionFactory());
SessionFactoryUtils
.releaseSession(session, getSessionFactory());
}
}
}

/**
* Implementing classes, implement this method.
*/
protected abstract void executeTransactional(JobExecutionContext ctx)
throws JobExecutionException;
}

所有Quartz类都继承TransactionalQuartzTask类实现executeTransactional虚方法。
本文出自 “正气大侠” 博客，请务必保留此出处http://zhengqidaxia.blog.51cto.com/3231279/1026929