Several Feign Clients with different errorDecoders in one Spring application

Question

I'm trying to implement two different errorDecoders for two different Feign clients. My application fails to start exception

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.client.ClientFirst': FactoryBean threw exception on object creation; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'feign.codec.ErrorDecoder' available: expected single matching bean but found 2: errorDecoder,ClientFirstErrorDecoder


// First configuration

@RequiredArgsConstructor
@Service
@Slf4j
public class ClientFirstConfiguration {

    @Bean(name = "ClientFirstErrorDecoder")
    public ErrorDecoder errorDecoder() {
          // omitted for brevity
        };
    }
}

// Second configuration

@RequiredArgsConstructor
@Service
@Slf4j
public class ClientSecondConfiguration {

    public ErrorDecoder errorDecoder() {
          // omitted for brevity
        };
    }
}

// First client

@FeignClient(
        name = "feign.client.config.first",
        url = "${first.url}",
        configuration = {
                FeignDefaultConfiguration.class,
                ClientFirstConfiguration.class
        }
)
@Headers({"Content-Type: application/json"})
public interface ClientFirst {
// omitted for brevity
}

// Second client

@FeignClient(
        name = "feign.client.config.second",
        url = "${second.url}",
        configuration = {
                FeignDefaultConfiguration.class,
                ClientSecondConfiguration.class
        }
)
@Headers({"Content-Type: application/json"})
public interface ClientSecond {
// omitted for brevity
}

score 0 · Answer 1 · answered Feb 27 '23 at 11:33

You are using @Service annotation for your configuration classes. You don't need to do this. According documentation "FooConfiguration does not need to be annotated with @Configuration. However, if it is, then take care to exclude it from any @ComponentScan that would otherwise include this configuration as it will become the default source for feign.Decoder, feign.Encoder, feign.Contract, etc., when specified."

Several Feign Clients with different errorDecoders in one Spring application

1 Answers1