@Async in Spring doesn't work in Service class?
<p><code>@Async</code> method in <code>@Service</code> annotated class in standalone Spring Boot application doesn't run asynchronously. What am I doing wrong?</p>

<p>When I run the same method directly from main class (<code>@SpringBootApplication</code> annotated), it works. Example:</p>

<p><strong>Main class</strong></p>

<pre><code>@SpringBootApplication
@EnableAsync
public class Application implements CommandLineRunner {

    @Override
    public void run(String... args) throws Exception {
        // here when I call downloadAnSave() it runs asynchronously...
        // but when I call downloadAnSave() via downloadAllImages() it does not run asynchronously...
    }

}
</code></pre>

<p>and my <strong>service class</strong> (and here asynchronous behavior doesn't work):</p>

<pre><code>@EnableAsync
@Service
public class ImageProcessorService implements IIMageProcessorService {

    public void downloadAllImages(Run lastRun) {
        // this method calls downloadAnSave() in loop and should run asynchronously....
    }

    @Async
    @Override
    public boolean downloadAnSave(String productId, String imageUrl) {
        //
    }

}
</code></pre>