OpenFeign client doesn't apply "Content-Type" header value: 415 in response

Question

I want to perform DELETE using feign:

public static <T> T createClient(Class<T> type) {
    return Feign.builder()
            .client(new OkHttpClient())
            .encoder(new GsonEncoder())
            .decoder(new CustomGsonDecoder())
            .logger(new Slf4jLogger(type))
            .logLevel(Logger.Level.FULL)
            .target(type, url);
}

Method from ConsumersClient interface:

@RequestLine("DELETE /consumers/{id}")
@Headers({"Content-Type: application/json", "Authorization: Bearer {token}"})
Response deleteConsumerById(@Param("token") String token, @Param("id") String id);

And when I do:

CLIENT = createClient(ConsumersClient.class);
CLIENT.deleteConsumerById(token, id)

And I got

{"statusCode":415,"error":"{\"timestamp\":\"2020-02-27T08:09:33.634Z\",\"status\":415,\"error\":\"Unsupported Media Type\",\"message\":\"Content type '' not supported\",\"path\":\"/consumers/id\"}"}

Since the message is: ""Content type '' not supported" I assume that Feign doesn't apply Content-Type value to its headers.

PLEASE NOTE: Same request via Postman returns 200 with the same parameters. So the service is working as expected.

Logback says the headers are included:

11:09:32.660 [main] DEBUG ConsumersClient - [ConsumersClient#deleteConsumerById] ---> DELETE https://hereGoesMyURL/consumers/id HTTP/1.1
11:09:32.663 [main] DEBUG ConsumersClient - [ConsumersClient#deleteConsumerById] Content-Type: application/json
11:09:32.663 [main] DEBUG ConsumersClient - [ConsumersClient#deleteConsumerById] Authorization: Bearer hereGoesTheToken
11:09:32.664 [main] DEBUG ConsumersClient - [ConsumersClient#deleteConsumerById] ---> END HTTP (0-byte body)

Please help to figure out what's wrong with my code.

@Arthurofos I build client with Feign.builder() and create requests using interface with delete method from the code above — splekhanov, Feb 27 '20 at 08:45
@Arthurofos Formatting in comments is hard... `Feign.builder() .client(new OkHttpClient()) .encoder(new GsonEncoder()).decoder(new CustomGsonDecoder()).logger(new Slf4jLogger(type)).logLevel(Logger.Level.FULL).target(type, url);` — splekhanov, Feb 27 '20 at 08:52
@Arthurofos It's seems like there's no way to post code in comments other than inline style — splekhanov, Feb 27 '20 at 08:56

score 0 · Answer 1 · answered Feb 27 '20 at 14:18

0

The problem has been discussed here: https://github.com/OpenFeign/feign/issues/391

Since there's no defined semantics for DELETE with a body Feign is stripping the content-type header on this type of requests.

answered Feb 27 '20 at 14:18

splekhanov

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OpenFeign client doesn't apply "Content-Type" header value: 415 in response

1 Answers1