No qualifying bean of type 'ThreadPoolTaskExecutor' available - spring

Question

I'm using Spring Boot 2.2.4 and I'm trying to a custom Executor
Below are the relevant classes
#Configuration
#ManagedResource
public class ExecutorConfig {
#Bean(name = "detailsScraperExecutor")
public Executor getDetailsAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(5);
executor.setQueueCapacity(1000000);
executor.setThreadNamePrefix("detailsScraperExecutor-");
executor.initialize();
return executor;
}
}
and the following class which tries to use it.
#Component
#Profile("!test")
public class DetailsScraper {
private static final Logger logger = LoggerFactory.getLogger(DetailsScraper.class);
#Autowired
#Qualifier("detailsScraperExecutor")
private ThreadPoolTaskExecutor detailsScraperExecutor;
}
When I run the application I get the following error
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'detailsScraper': Unsatisfied dependency
expressed through field 'detailsScraperExecutor'; nested exception is
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type
'org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor'
available: expected at least 1 bean which qualifies as autowire
candidate. Dependency annotations:
{#org.springframework.beans.factory.annotation.Autowired(required=true),
#org.springframework.beans.factory.annotation.Qualifier(value="detailsScraperExecutor")}
my application.properties
spring.jmx.enabled=false
spring.datasource.url=jdbc:postgresql://example.com:5432/example
spring.datasource.username=example
spring.datasource.password=password
spring.jpa.open-in-view=false
logging.level.com.gargoylesoftware.htmlunit=ERROR
spring.datasource.hikari.maximumPoolSize = 30
app.properties.parseaddress.endpoint=http://example.com
Even though I have named it detailsScraperExecutor Spring can't find it? Why is that?

Answer 1

You need to inject the same type of class as declared in configuration but not a higher-level one. But you can use the lower-level one.
#Autowired
private Executor detailsScraperExecutor;