java Spring Task Scheduler - 没有定义 [org.springframework.scheduling.TaskScheduler] 类型的合格 bean
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/31199888/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-11-02 18:15:53 来源:igfitidea点击:
Spring Task Scheduler - No qualifying bean of type [org.springframework.scheduling.TaskScheduler] is defined
提问by Chandz
Error:No qualifying bean of type [org.springframework.scheduling.TaskScheduler] is defined
错误：未定义 [org.springframework.scheduling.TaskScheduler] 类型的合格 bean
Here is my console log:
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]
Here is WebConfig.java:
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);
}
}
Here is my MobileNotifSchedulerBean:
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();
}
}
I am using Java 8 and Spring MVC 4. I want to solve this error "No qualifying bean of type [org.springframework.scheduling.TaskScheduler] is defined"kindly help me. TIA.
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。
回答by Robin Rizvi
This exception is logged from org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.inishRegistration():
这个异常是从org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.inishRegistration()记录的：
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...
}
}
}
This process attempts to set the task scheduler for the registrar. For this, it tries to find a registered scheduler bean through BeanFactory.getBeanmethod:
此过程尝试为注册器设置任务调度程序。为此，它尝试通过BeanFactory.getBean方法查找已注册的调度程序 bean ：
- Tries to find a configured TaskScheduler bean, if not found then fallbacks to->
- finding ScheduledExecutorService bean, if not found then fallbacks to->
- using the default schedulerwithin the registrar (The same is indicated in the code comment above: // Giving up -> falling back to default scheduler within the registrar...)
- 尝试查找已配置的TaskScheduler bean，如果未找到则回退到->
- 找到ScheduledExecutorService bean，如果没有找到则回退到->
- 使用注册器内的默认调度器（同样在上面的代码注释中指出：//放弃 -> 回退到注册器内的默认调度器...）
If any of the TaskScheduler or ScheduledExecutorService bean is not found in the container, BeanFactory.getBean throws an exception.
如果在容器中找不到任何 TaskScheduler 或 ScheduledExecutorService bean，则 BeanFactory.getBean 将抛出异常。
ScheduledAnnotationBeanPostProcessor in turn logs these exception with DEBUG level:
ScheduledAnnotationBeanPostProcessor 反过来用 DEBUG 级别记录这些异常：
logger.debug("Could not find default TaskScheduler bean", ex);
logger.debug("Could not find default ScheduledExecutorService bean", ex);
So, in conclusion these exceptions are just logged in process of finding a fallback option for task scheduler bean, and they do not affect the execution of the application.
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。
The log level of this class can be elevated so that these DEBUG level messages are not logged like so:
可以提升此类的日志级别，以便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>
回答by Black Glix
Annote your MobileNotifSchedulerBeanwith @Configurable. I think it will work.
注释您MobileNotifSchedulerBean的@Configurable. 我认为它会起作用。
