Feign: OpenFeign Client HTTP.GET: Method has too many Body parameters

[sean-huni]

This works:

//Example 1 @Headers("Content-Type: application/json") @RequestLine("POST api/v2/clients") ClientResponse findAllClientsByUid1(@RequestBody ClientRequest request);

But this doesn't work:

//Example 2 @Headers("Content-Type: application/json") @RequestLine("GET api/v2/clients/{uid}") ClientResponse findAllClientsByUid2(@PathVariable(value = "uid") String uid, @RequestParam(value = "limit", required = false) Integer limit, @RequestParam(value = "offset", required = false) Integer offset); }

Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract com.services.requestresponse.ClientResponse com.microservice.gateway.feign.ClientFeignV2.findAllClientsByUid2(java.lang.String,java.lang.Integer,java.lang.Integer)

Based on the exception, it's failing because the HTTP.GET method doesn't allow response objects to have too many fields & nested fields. Surprisingly using the same returned Response Objects for the HTTP.POST, it works well. But According to REST-API standards, I can't do a POST when I want to read a resource.

[velo]

This is a consequence of mixing feign and jaxrs annotations.

Either use feign contract or jaxrs contract.

[velo]

Made a PR to add more information when this happens

[sean-huni]

Thank you.
The issue was: Mixing dependencies from OpenFeign & "Spring Cloud OpenFeign".

https://stackoverflow.com/questions/60221388/spring-boot-openfeign-java-lang-illegalstateexception-method-has-too-many-body/60271238#60271238