Starting asynchronous task via Spring TaskScheduler - spring

Question

I need to execute a task at 7.05am but I am getting an error.
This is the Controller I created.
#Service("myCtr")
public class MyController {
#Autowired
private TaskScheduler scheduler;
#Async
public void executeTaskT() {
scheduler.schedule(new MyWorker(),
new CronTrigger("5 7 * * *"));
}
}
MyWorker is implementing Runnable simply this way:
[...]
#Override
public void run() {
doWork();
}
private void doWork() { [...]
My scheduler configuration file is imported by the web-application-config.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">
<bean id="TaskScheduler"
class="org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler">
<property name="waitForTasksToCompleteOnShutdown" value="true" />
<property name="poolSize" value="1000" />
</bean>
</beans>
The error:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyCtr': Injection
of autowired dependencies failed; nested exception is
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private
org.springframework.scheduling.TaskScheduler [...].MyController.scheduler; nested
exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type
[org.springframework.scheduling.TaskScheduler] found for dependency: expected at least 1 bean which
qualifies as autowire candidate for this dependency. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
[...]
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private
org.springframework.scheduling.TaskScheduler [...].MyController.scheduler; nested
exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type
[org.springframework.scheduling.TaskScheduler] found for dependency: expected at least 1 bean which
qualifies as autowire candidate for this dependency. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}
[...]
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type
[org.springframework.scheduling.TaskScheduler] found for dependency: expected at least 1 bean which
qualifies as autowire candidate for this dependency. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true)}

Answer 1

It appears that Spring can't find your TaskScheduler bean.
With INFO logging, you should be able to find your bean definition in the log during initialization. If not, make sure your configuration file is effectively read by doing further tests.
For your precise need, you can also use the following:
#Service
public class MyService {
#Scheduled(cron = "0 5 7 * * *")
public void myMethod() { ... }
}
With this configuration:
<task:annotation-driven scheduler="myScheduler"/>
<task:scheduler id="myScheduler" pool-size="1000"/>
And assuming MyService is properly seen as a bean, using e.g. Component Scan.