Shows how adding a Spring configuration implementing AsyncConfigurer can break some seemingly unrelated beans.
See the tests in src/test/java/com/example/demo.
@Configuration
@EnableAsync
public class AsyncConfig extends AsyncConfigurerSupport {
/**
* This explicit dependency causes the {@link ExceptionHandlerComponent} bean (and all its dependencies)
* to be created early when BeanPostProcessors are registered. This prevents these beans to be processed
* e.g. by AOP processors.
* <p>
* This is because {@link ProxyAsyncConfiguration} causes this config to be created and its dependencies
* injected.
* </p>
* <p>
* As a workaround, one can add {@link Lazy} to this field.
* </p>
*/
@Autowired
private ExceptionHandlerComponent exceptionHandlerComponent;
@Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return (throwable, method, objects) -> exceptionHandlerComponent.handle(throwable);
}
}