java - Spring Task Scheduler - 没有定义 [org.springframework.scheduling.TaskScheduler] 类型的合格 bean

标签 java spring spring-mvc ubuntu cron

错误: 没有定义 [org.springframework.scheduling.TaskScheduler] 类型的合格 bean

这是我的控制台日志:

10:32:35.742 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Eagerly caching bean 'cronTrigger' to allow for resolving potential circular references
10:32:35.746 [localhost-startStop-1] DEBUG o.s.s.a.ScheduledAnnotationBeanPostProcessor - No @Scheduled annotations found on bean class: class org.springframework.scheduling.support.CronTrigger
10:32:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'cronTrigger'
10:32:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating shared instance of singleton bean 'taskExecutor'
10:32:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'taskExecutor'
10:32:35.747 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'webConfig'
10:32:35.749 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Eagerly caching bean 'taskExecutor' to allow for resolving potential circular references
10:32:35.757 [localhost-startStop-1] DEBUG o.s.s.a.ScheduledAnnotationBeanPostProcessor - No @Scheduled annotations found on bean class: class java.util.concurrent.ScheduledThreadPoolExecutor
10:32:35.757 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'taskExecutor'
10:32:35.757 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating shared instance of singleton bean 'getInternalResourceViewResolver'
10:32:35.757 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'getInternalResourceViewResolver'
10:32:35.757 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'webConfig'
10:32:35.770 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Eagerly caching bean 'getInternalResourceViewResolver' to allow for resolving potential circular references
10:32:35.781 [localhost-startStop-1] DEBUG o.s.s.a.ScheduledAnnotationBeanPostProcessor - No @Scheduled annotations found on bean class: class org.springframework.web.servlet.view.InternalResourceViewResolver
10:32:35.781 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'getInternalResourceViewResolver'
10:32:35.785 [localhost-startStop-1] DEBUG o.s.w.c.s.AnnotationConfigWebApplicationContext - Unable to locate LifecycleProcessor with name 'lifecycleProcessor': using default [org.springframework.context.support.DefaultLifecycleProcessor@31b09c11]
10:32:35.785 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'lifecycleProcessor'
10:32:35.788 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'delegatingApplicationListener'
10:32:35.788 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.annotation.internalScheduledAnnotationProcessor'
10:32:35.788 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'mvcResourceUrlProvider'
10:32:35.788 [localhost-startStop-1] DEBUG o.s.w.s.resource.ResourceUrlProvider - Looking for resource handler mappings
10:32:35.789 [localhost-startStop-1] DEBUG o.s.w.s.resource.ResourceUrlProvider - No resource handling mappings found
10:32:35.789 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'webConfig'
10:32:35.794 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'cronTrigger'
10:32:35.808 [localhost-startStop-1] DEBUG o.s.s.a.ScheduledAnnotationBeanPostProcessor - Could not find default TaskScheduler bean

//Exception Starts from here.
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.scheduling.TaskScheduler] is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:371) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:331) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.finishRegistration(ScheduledAnnotationBeanPostProcessor.java:183) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:162) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:85) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:151) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:128) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:773) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) [spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) [spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) [spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4726) [catalina.jar:8.0.20.B]
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5162) [catalina.jar:8.0.20.B]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.0.20.B]
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) [catalina.jar:8.0.20.B]
     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) [catalina.jar:8.0.20.B]
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) [catalina.jar:8.0.20.B]
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:581) [catalina.jar:8.0.20.B]
    at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1683) [catalina.jar:8.0.20.B]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_45]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_45]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_45]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_45]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
10:32:35.809 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'taskExecutor'
10:32:35.827 [localhost-startStop-1] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'spring.liveBeansView.mbeanDomain' in [servletConfigInitParams]
10:32:35.827 [localhost-startStop-1] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'spring.liveBeansView.mbeanDomain' in [servletContextInitParams]
10:32:35.827 [localhost-startStop-1] DEBUG o.s.c.e.PropertySourcesPropertyResolver - Searching for key 'spring.liveBeansView.mbeanDomain' in [jndiProperties]
10:32:35.827 [localhost-startStop-1] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [java:comp/env/spring.liveBeansView.mbeanDomain]
10:32:35.830 [localhost-startStop-1] DEBUG o.s.jndi.JndiLocatorDelegate - Converted JNDI name [java:comp/env/spring.liveBeansView.mbeanDomain] not found - trying original name [spring.liveBeansView.mbeanDomain]. javax.naming.NameNotFoundException: Name [spring.liveBeansView.mbeanDomain] is not bound in this Context. Unable to find [spring.liveBeansView.mbeanDomain].
10:32:35.830 [localhost-startStop-1] DEBUG o.springframework.jndi.JndiTemplate - Looking up JNDI object with name [spring.liveBeansView.mbeanDomain]

这是WebConfig.java:

@Configuration
@EnableScheduling
@EnableWebMvc
@ComponentScan(basePackages="com.project")
public class WebConfig implements SchedulingConfigurer 
{    
protected static final Logger slf4jLogger  = Logger.getLogger(WebConfig.class.getName());
private static final String cronExpression = "0 0 * * * ?";



/*@Bean
public MobileNotifSchedulerBean schedulerbean()
{
    return new MobileNotifSchedulerBean();
}*/

@Bean
public InternalResourceViewResolver getInternalResourceViewResolver()
{
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/jsp/");
    resolver.setSuffix(".jsp");
    resolver.setSuffix(".html");
    resolver.setSuffix(".htm");
    return resolver;
}

@Bean
CronTrigger cronTrigger() 
{
    //String timeZone = "Asia/Calcutta";

    String timeZone = null;
    HashSet<String> userTimeZonesfromDB = FetchUserTimeZones.fetchUserTimeZone();
    for (String s : userTimeZonesfromDB) 
    {
        timeZone = s;
        slf4jLogger.info(s);
    }
    return new CronTrigger(cronExpression, TimeZone.getTimeZone(timeZone));
}


@Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) 
{

    taskRegistrar.addCronTask(new CronTask(new MobileNotifSchedulerBean(), cronTrigger()));
}

@Bean(destroyMethod="shutdown")
public Executor taskExecutor() 
{
    return Executors.newScheduledThreadPool(1);
}   
}

这是我的MobileNotifSchedulerBean:

@EnableScheduling
public class MobileNotifSchedulerBean implements Runnable 
{
protected static final Logger slf4jLogger  = Logger.getLogger(MobileNotifSchedulerBean.class.getName());


public void sendQuestionNotif() 
{
    try 
    {
        HashSet<String> reg_ids = FetchRegistrationIDs.fetchItems();
        for (String s : reg_ids) 
        {
            String REGISTRATION_IDs = s;
            slf4jLogger.info(s);                
            MobileSNSPushNotification.sendNotification(REGISTRATION_IDs);
        }
    } 
    catch (IOException e) 
    {
        //e.printStackTrace();
        slf4jLogger.error(e);
        slf4jLogger.error(e.getMessage());
        slf4jLogger.error(e.getStackTrace());
    }
}


@Override
public void run() 
{
    sendQuestionNotif();
}
}

我正在使用 Java 8 和 Spring MVC 4。我想解决这个错误 “没有定义 [org.springframework.scheduling.TaskScheduler] 类型的合格 bean” 请帮助我。 TIA。

最佳答案

此异常记录自 org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.inishRegistration():

if (this.registrar.hasTasks() && this.registrar.getScheduler() == null) {
    Assert.state(this.beanFactory != null, "BeanFactory must be set to find scheduler by type");
    try {
        // Search for TaskScheduler bean...
        this.registrar.setTaskScheduler(this.beanFactory.getBean(TaskScheduler.class));
    }
    catch (NoSuchBeanDefinitionException ex) {
        logger.debug("Could not find default TaskScheduler bean", ex);
        // Search for ScheduledExecutorService bean next...
        try {
            this.registrar.setScheduler(this.beanFactory.getBean(ScheduledExecutorService.class));
        }
        catch (NoSuchBeanDefinitionException ex2) {
            logger.debug("Could not find default ScheduledExecutorService bean", ex);
            // Giving up -> falling back to default scheduler within the registrar...
        }
    }
}

此进程尝试为注册商设置任务调度程序。为此，它尝试通过 BeanFactory.getBean 方法找到已注册的调度程序 bean:

  1. 尝试找到一个已配置的 TaskScheduler bean，如果找不到则回退 到->
  2. 寻找ScheduledExecutorService bean，如果没有找到则回退到->
  3. 在注册器中使用默认调度器 (同样在上面的代码注释中指出://Giving up -> falling back to default scheduler within the registrar...)

如果在容器中找不到任何 TaskScheduler 或 ScheduledExecutorService bean，BeanFactory.getBean 将抛出异常。

ScheduledAnnotationBeanPostProcessor 依次记录这些具有 DEBUG 级别的异常:

logger.debug("Could not find default TaskScheduler bean", ex);
logger.debug("Could not find default ScheduledExecutorService bean", ex);

因此，总而言之，这些异常只是在为任务调度程序 bean 寻找回退选项的过程中记录的，它们不会影响应用程序的执行。

可以提高此类的日志级别，这样就不会像这样记录这些 DEBUG 级别的消息:

<!-- Elevate the log level for 'org.springframework.scheduling' since in
     process of registering the scheduled task, Spring's
     ScheduledAnnotationBeanPostProcessor tries to find TaskScheduler and
     ScheduledExecutorService beans and then fallbacks to its internal
     scheduler but in the process logs exceptions when it cannot find those
     beans registered.
-->
<logger name="org.springframework.scheduling">
    <level value="info" />
</logger>

关于java - Spring Task Scheduler - 没有定义 [org.springframework.scheduling.TaskScheduler] 类型的合格 bean，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31199888/

上一篇：使用高斯算法的 2016 年 Java 复活节计算器

下一篇：java - 在独立应用程序中使用@Transactional

相关文章：

java多服务器聊天架构

java - 发布时出现 404 错误，但我的服务器获取数据正常但未正确返回

java - 无法打开类路径资源 [java/lang/Object.class]，因为它不存在

java - 如何不在控制台上打印异常

spring - 异步 Spring Controller 与普通 Controller

java - 为什么图片下方没有显示文字？

java - 为什么 Final 变量不需要在 java 的 main 方法中初始化？

java - 构造函数 SimpleAdapter 未定义

java - 如何在 java 中修复 Mass Assignment : Insecure Binder Configuration (API Abuse, Structural)

spring - 如何有条件地启用/禁用 web.xml 中的过滤器

©2024 IT工具网  联系我们