无法实例化类加载助手类：org.quartz.simpl.CascadingClassLoadHelper 无法转换为 org.quartz.spi.ClassLoadHelper 错误

编程问答 2022-05-27

问题描述

我正在将我的应用程序从 JBoss 5 迁移到 Wildfly 21.0.1.Final。我在 Wildfly 上部署了一个包含 war 和 jar 模块的 ear 文件。在服务器启动期间，我看到以下错误

02:56:03,956 INFO  [com.xis.framework.batch.service.scheduler.QuartzScheluder] (ServerService Thread Pool -- 114)  START :: com.xis.framework.batch.service.scheduler.QuartzScheluder.getSchduler()
02:56:03,967 ERROR [com.xis.framework.batch.service.scheduler.QuartzScheluder] (ServerService Thread Pool -- 114) **Error occured while getting the schduler object: org.quartz.SchedulerConfigException: Unable to instantiate class load helper class: org.quartz.simpl.CascadingClassLoadHelper cannot be cast to org.quartz.spi.ClassLoadHelper [See nested exception: java.lang.ClassCastException: org.quartz.simpl.CascadingClassLoadHelper cannot be cast to org.quartz.spi.ClassLoadHelper**
  at org.quartz.impl.StdSchedulerFactory.instantiate(StdSchedulerFactory.java:538)
        at org.quartz.impl.StdSchedulerFactory.getScheduler(StdSchedulerFactory.java:1094)
        at com.xiss.framework.batch.service.scheduler.QuartzScheluder.getSchduler(QuartzScheluder.java:68)
        at com.xis.framework.batch.service.scheduler.QuartzScheluder.processJobs(QuartzScheluder.java:40)
        at com.xis.framework.batch.service.scheduler.QuartzInitializerListener.contextInitialized(QuartzInitializerListener.java:99)
        at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
        at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:219)
        at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:187)
        at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
        at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
        at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)

QuartzScheluder.java


            if (jobDetails != null && jobDetails.size() != 0) {
                Scheduler scheduler = getSchduler();  --->Error at this line
                for (QuartzJobDetail jobDet : jobDetails) {     
                    processSchduler(jobDet,scheduler);
                }
            private static Scheduler getSchduler() {
        if(logger.isInfoEnabled()){
            logger.info(" START :: "+ QuartzScheluder.class.getName()  +".getSchduler()");
        }
        SchedulerFactory sf = new StdSchedulerFactory();
        Scheduler scheduler = null;
        try {
            scheduler = sf.getScheduler();
            scheduler.start();
        } catch (SchedulerException e) {
            logger.error("Error occured while getting the schduler object",e);
        }
        if(logger.isInfoEnabled()){
            logger.info(" END :: "+ QuartzScheluder.class.getName()  +".getSchduler()");
        }
        return scheduler;
    }

使用位于 org/quartz 包中的quartz.properties”文件（作为资源）


org.quartz.scheduler.instanceName = DefaultQuartzScheduler
org.quartz.scheduler.rmi.export = false
org.quartz.scheduler.rmi.proxy = false
org.quartz.scheduler.wrapJobExecutionInUserTransaction = false
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 10
org.quartz.threadPool.threadPriority = 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore

我的耳朵 pom.xml 有以下依赖

  <dependency>
            <groupId>opensymphony</groupId>
            <artifactId>quartz</artifactId>
            <version>1.6.3</version>
        </dependency>

还有其他人遇到过这个问题吗？可以做些什么来解决这个问题？

解决方法

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classcastexceptionjavajavajbossquartz-schedulerwildfly