provide ignore annotation to programmatically ignore method parameter

Is your feature request related to a problem? Please describe.

Currently following interface method:

ResponseEntity<ModelSO> getSubscriptionInformation(
       @RequestBody @ApiParam(name = "request", value = "The body of the request", required = true) 
       ModelSO model, // body 1
       WebRequest webRequest); // body2 ?

can't be used as Feign Client:

java.lang.IllegalStateException: Method has too many Body parameters: public abstract org.springframework.http.ResponseEntity com.daimler.daivb.vts.snap.SubscriptionInformationSI.getSubscriptionInformation(java.lang.String,java.lang.String,java.lang.String,java.lang.String,com.daimler.daivb.vts.snap.SubscriptionRequestSO,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,org.springframework.web.context.request.WebRequest)
    at feign.Util.checkState(Util.java:128)
    at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:114)
    at org.springframework.cloud.netflix.feign.support.SpringMvcContract.parseAndValidateMetadata(SpringMvcContract.java:131)
    at feign.Contract$BaseContract.parseAndValidatateMetadata(Contract.java:64)
    at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:146)
    at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:53)
    at feign.Feign$Builder.target(Feign.java:209)
    at feign.Feign$Builder.target(Feign.java:205)

Describe the solution you'd like We should provide ignore annotation like @FeignIgnore to programmatically ignore some method parameter. For example:

ResponseEntity<ModelSO> getSubscriptionInformation(
       @RequestBody @ApiParam(name = "request", value = "The body of the request", required = true) 
       ModelSO model, // body 1
       @FeignIgnore
       WebRequest webRequest); // ignored

Describe alternatives you've considered I have tried add @RequestParam(required=false), but it will add toString() value to url as get parameters, and server will respond cannot convert string to target object.

For example :

Caused by: feign.FeignException$BadRequest: [400] during [GET] to [http://text-masker-mgmt/api/phrase?assembler=org.springframework.data.web.PagedResourcesAssembler%4010b3ea72&pageable=INSTANCE&pageRequest=PageRequest%28page%3D0%2C%20size%3D10%2C%20sort%3DcreatedAt%29&value=FOR_UPDATE&enabled=false&page=0&size=10&sort=createdAt&offset=0] [PhraseApi#getPhraseList(PagedResourcesAssembler,Pageable,Predicate,PageRequest,Map)]
    at feign.FeignException.clientErrorStatus(FeignException.java:213) ~[feign-core-11.10.jar:na]
    at feign.FeignException.errorStatus(FeignException.java:194) ~[feign-core-11.10.jar:na]
    at feign.FeignException.errorStatus(FeignException.java:185) ~[feign-core-11.10.jar:na]
    at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:92) ~[feign-core-11.10.jar:na]
    at feign.AsyncResponseHandler.handleResponse(AsyncResponseHandler.java:98) ~[feign-core-11.10.jar:na]
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:141) ~[feign-core-11.10.jar:na]
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:91) ~[feign-core-11.10.jar:na]
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100) ~[feign-core-11.10.jar:na]
    at com.sun.proxy.$Proxy109.getPhraseList(Unknown Source) ~[na:na]
    at io.github.xhstormr.masker.web.api.phrase.PhraseApi.getPhraseList(PhraseApi.kt:113) ~[main/:na]
    at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:710) ~[na:na]
    at feign.DefaultMethodHandler.invoke(DefaultMethodHandler.java:141) ~[feign-core-11.10.jar:na]
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100) ~[feign-core-11.10.jar:na]
    at com.sun.proxy.$Proxy109.getPhraseList(Unknown Source) ~[na:na]
    at io.github.xhstormr.masker.Application.mgmtApi$lambda$2(Application.kt:43) ~[main/:na]
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:756) ~[spring-boot-2.7.18.jar:2.7.18]
    ... 14 common frames omitted

Currently i implemented @FeignIgnore by myself, but i think official repos should provide this feature. It will also resolve https://github.com/spring-cloud/spring-cloud-netflix/issues/2540.

annotation class FeignIgnore

class FeignIgnoreParameterProcessor : AnnotatedParameterProcessor {

    override fun getAnnotationType() = FeignIgnore::class.java

    override fun processArgument(
        context: AnnotatedParameterProcessor.AnnotatedParameterContext,
        annotation: Annotation,
        method: Method
    ) = true
}

class ExampleFeignConfig {

    @Bean
    fun feignIgnoreParameterProcessor() = FeignIgnoreParameterProcessor()
}

Then add ExampleFeignConfig to @FeignClient

@FeignClient(...., configuration = [ExampleFeignConfig::class])

spring-cloud / spring-cloud-openfeign

provide ignore annotation to programmatically ignore method parameter #996