AsyncService Example

async_service.java

public interface MyService {
    Future<String> testAsync();
}

@Service
@Transactional
public class MyServiceImpl implements MyService {
    @Async
    @Override
    public Future<String> testAsync() {
      String hello = "world";
    	String threadName = Thread.currentThread().getName(); 
        System.out.println("   " + threadName + " beginning work");
        try {
            Thread.sleep(10000); // simulates work
        }
        catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        System.out.println("   " + threadName + " completed work");
    	
    	return new AsyncResult<String>(hello);
    }
}

public interface MyApiService {
    String testAsync() throws Exception;
}

@Path("/api")
@Service("srvMyApi")
public class MyApiServiceImpt implements MyApiService {
  @Override
	@GET
	@Path("/testAsync")
	@Produces(MediaType.APPLICATION_JSON)
    public String testAsync() throws Exception {
    		Future<String> future = bookService.testAsync();
    		HttpServletRequest req = context.getHttpServletRequest();
    		return "called Async";
    }
}