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Feign Inheritance Support multiple produces

See original GitHub issue

I want to use the feign inheritance support, but the the SpringMvcContract has a problem with multiple produces and consumers.

Example from http://projects.spring.io/spring-cloud/spring-cloud.html#spring-cloud-feign-inheritance:

public interface UserService {
@RequestMapping(method = RequestMethod.GET, value ="/users/{id}",  produces = { "application/hal+json", MediaType.APPLICATION_JSON_VALUE })
    User getUser(@PathVariable("id") long id);
}

@RestController
public class UserResource implements UserService {

}

@FeignClient("users")
public interface UserClient extends UserService {

}

Caused by: java.lang.IllegalStateException: Method userClient can only contain at most 1 produces field. Found: [application/hal+json, application/json]
    at feign.Util.checkState(Util.java:117)
    at org.springframework.cloud.netflix.feign.support.SpringMvcContract.checkAtMostOne(SpringMvcContract.java:113)
    at org.springframework.cloud.netflix.feign.support.SpringMvcContract.parseProduces(SpringMvcContract.java:195)
    at org.springframework.cloud.netflix.feign.support.SpringMvcContract.processAnnotationOnMethod(SpringMvcContract.java:103)
    at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:92)
    at feign.Contract$BaseContract.parseAndValidatateMetadata(Contract.java:61)
    at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:137)
    at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:55)
    at feign.Feign$Builder.target(Feign.java:198)
    at feign.Feign$Builder.target(Feign.java:194)
    at org.springframework.cloud.netflix.feign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:142)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168)
    ... 25 more

It would be better to use the first producer or consumer

Issue Analytics

State:
Created 8 years ago
Reactions:2
Comments:10 (6 by maintainers)

Top GitHub Comments

2reactions

spencergibbcommented, Feb 5, 2016

Yup, I’m fine with multiple Accept, what about picking the first consumes?

0reactions

spencergibbcommented, Jul 18, 2017

No @cforce

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