Springboot @retryable not retrying

Question

The following code is not retrying. What am I missing?

@EnableRetry
@SpringBootApplication
public class App implements CommandLineRunner
{
    .........
    ....         


        

Answer 1

I solved it. I figured out that if return something from the method that you trying to retry, then @Retryable() is not working.

maven dependency in pom.xml

    
        org.springframework.retry
        spring-retry
        1.1.5.RELEASE
    

Spring boot Application.java

@SpringBootApplication
@EnableTransactionManagement
@EnableRetry
public class Application {

     public static void main(String[] args) throws Exception {
       SpringApplication.run(Application.class, args);
     }

}

in controller.java

@RestController
public class JavaAllDataTypeController {

@Autowired
JavaAllDataTypeService JavaAllDataTypeService;


@RequestMapping(
        value = "/springReTryTest",
        method = RequestMethod.GET
)
public ResponseEntity springReTryTest() {

    System.out.println("springReTryTest controller");

    try {
         JavaAllDataTypeService.springReTryTest();
    } catch (Exception e) {
        e.printStackTrace();
    }

    return new  ResponseEntity("abcd", HttpStatus.OK);
  }

}

in service.java

@Service
@Transactional
public class JavaAllDataTypeService {

 // try the method 9 times with 2 seconds delay.
 @Retryable(maxAttempts=9,value=Exception.class,backoff=@Backoff(delay = 2000))
 public void springReTryTest() throws Exception {

    System.out.println("try!");
    throw new Exception();
  }

}

output: It' trying 9 times then throwing exception.