Question

我已在我的应用程序中将hibernate 3.x升级到5.2.1。升级后，我在运行应用程序时遇到以下错误，

org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.hibernate.jmx.StatisticsService] for bean with name 'clientRegHibernateStatistics' defined in ServletContext resource [/WEB-INF/classes/hibernate-context.xml]; nested exception is java.lang.ClassNotFoundException: org.hibernate.jmx.StatisticsService
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1357)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:628)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:597)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1450)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:447)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:417)
    at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(BeanFactoryUtils.java:220)
    at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:73)
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:101)
    at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:103)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:249)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:988)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:959)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:472)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:757)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4716)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5178)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:152)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:724)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:700)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:952)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1823)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.hibernate.jmx.StatisticsService
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1284)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1118)
    at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
    at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:394)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1402)
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1349)
    ... 36 more

我有谷歌找到解决方案。我之前知道 Hibernate StatisticsService已从4.0推荐并在hibernate 5.2.1中被删除。

参考 - https://stackoverflow.com/a/23606322和https://docs.jboss.org/hibernate/orm/4.0/javadocs/deprecated-list.html

我正在使用带有hibernate 5.2.1的spring 4.3.2版本用于我的应用程序。

org.hibernate.jmx.StatisticsService 的快速解决方法或替代方法是什么？

请帮助。

Answer 1

作为一种解决方案，他们建议使用自己的春豆。来自Hibernate JIRA HHH-6190

public class HibernateStatisticsFactoryBean implements FactoryBean<Statistics> {

  @Autowired
  private EntityManagerFactory entityManagerFactory;

  @Override
  public Statistics getObject() throws Exception {
    SessionFactory sessionFactory = ((HibernateEntityManagerFactory) entityManagerFactory).getSessionFactory();
    return sessionFactory.getStatistics();
  }

  @Override
  public Class<?> getObjectType() {
    return Statistics.class;
  }

  @Override
  public boolean isSingleton() {
    return true;
  }
}

然后您可以将其导出为MBean：From Spring Doc

Answer 2

默认情况下，未启用休眠统计机制，因此您需要使用以下配置属性将其激活：

<property name="hibernate.generate_statistics" value="true"/>

要通过JMX公开Hibernate指标，还需要设置hibernate.jmx.enabled配置属性：

<property name="hibernate.jmx.enabled" value="true"/>

建议使用Hibernate 5.4.2+，此机制在以前的版本中似乎已失效。

hibernate 5.2.1中org.hibernate.jmx.statisticsservice的替换或解决方法

2 个答案: