Error:
2018-06-12 14:02:24,709 [main] DEBUG[org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor] – Could not find default TaskScheduler bean
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:374)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:334)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.finishRegistration(ScheduledAnnotationBeanPostProcessor.java:203)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:182)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:87)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:166)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:382)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:336)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:877)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:144)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)
at com.richfit.ruiche.RichfitCBMRest.main(RichfitCBMRest.java:39)
2018-06-12 14:02:24,711 [main] DEBUG [org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor] – Could not find default ScheduledExecutorService bean
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [java.util.concurrent.ScheduledExecutorService] is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:374)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:334)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.finishRegistration(ScheduledAnnotationBeanPostProcessor.java:224)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:182)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:87)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:166)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:382)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:336)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:877)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:144)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)
at com.richfit.ruiche.RichfitCBMRest.main(RichfitCBMRest.java:39)
Error message analysis
The error message has two characteristics
1. the error message is a debug message.
2. The project eventually started normally, and the automated tasks in the project ran normally and were not affected.
Solution 1 – This exception log level is DEBUG, which does not affect normal usage and can be set on the log4j log level
Just add this line to the configuration under log4j
log4j.logger.org.springframework.scheduling = INFO
Effects – really no debug anymore, just printed as info
2018-06-12 14:09:39,340 [main] INFO [org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor] – No TaskScheduler/ScheduledExecutorService bean found for scheduled processing
Solution 2 – Since the error reminds that there is no [TaskScheduler], just add TaskScheduler to the SpringBoot configuration class
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
@Configuration
public class WebAppConfig extends WebMvcConfigurerAdapter{
@Bean
public TaskScheduler scheduledExecutorService() {
ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();
scheduler.setPoolSize(8);
scheduler.setThreadNamePrefix("scheduled-thread-");
return scheduler;
}
}– what’s the matter? What’s the meaning of reporting an error?Maybe spring hopes that technicians can specify components themselves
Spring’s timed task scheduler will try to get a registered task scheduler to do task scheduling. It will try to get a registered scheduler bean through the beanfactory.getbean method. The steps are as follows:
1. Try to find a taskscheduler bean from the configuration
2. Find the scheduled executorservice bean
3. Use the default scheduler
In the first two steps, if you can’t find it, you will throw an exception in the form of debug
logger.debug(“Could not find default TaskScheduler bean”, ex);
logger.debug(“Could not find default ScheduledExecutorService bean”, ex);
Therefore, the two exceptions printed out in the log are no error messages at all, and will not affect the use of timers. They are just some information printed by spring
★ the final solution
Both solutions are OK, and my final choice is the one in solution 2
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