Spring Cloud Openfeign Modify part name when send existing object of MultipartFile

Version info spring-cloud-openfeign-core:2.1.5.RELEASE spring-cloud-starter-openfeign:2.1.0.RELEASE feign-form:3.8.0 feign-form-spring:3.8.0 feign-core:10.4.0

Description I have 2 server A and B, a file such as 'file1' is uploaded to A by MultipartFile , then i will process the file but no reconstruct the object and send it to B server by fein client and use the different part name such as 'file2'.

And then i try specify the part name in annotation, like this @RequestPart("file2"), but it doesn't work.

After i read the code of spring-feign-form-encoder, i find that it use the return value of method MultipartFile.getName() as part name, but MultipartFile can not modify this field.

Sample Server A:

@PostMapping(value="/uploadattachbatch", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public void uploadAttachRecBatchHandler(
        HttpServletRequest request,
        HttpServletResponse response,
        @RequestPart(value = "attachrec") MultipartFile[] attachrec,
        @RequestParam(required = true) Long recID,
        @RequestParam(required = false) Long actID,
        @RequestParam(required = false) Integer actDefID,
        @RequestParam(required = false) Integer mediaUnionFlag,
        @RequestParam(required = true) String attachDesc) {
                    // send it to B by feignClient
                    mediaStreamApiManager.uploadMediaHandler(JsonUtils.toJsonString(media), humanID,
                0, null, null, null, null, null, files, Boolean.FALSE, Boolean.FALSE);
}

FeignClient Api:

@PostMapping(value = "/media/uploadinfo", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
ResultInfo uploadMediaHandler(@RequestParam(value = "mediaInfo") String mediaInfo,
                                @RequestParam(value = "humanID") Integer humanID,
                                @RequestParam(value = "fromMobile") Integer fromMobile,
                                @RequestParam(value = "mediaSize") Long mediaSize,
                                @RequestParam(value = "partSize") Long partSize,
                                @RequestParam(value = "blockSize") Long blockSize,
                                @RequestParam(value = "partNO") Integer partNO,
                                @RequestParam(value = "fn") String fn,
                                @RequestPart(value = "files")MultipartFile[] files,
                                @RequestParam(value = "replace")Boolean replace,
                                @RequestParam(value = "checkExist")Boolean checkExist);

config:

class MultipartSupportConfig {

    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;

    @Bean
    public Encoder feignFormEncoder () {
        return new SpringFormEncoder(new SpringEncoder(messageConverters));
    }
}

Service B:

@RequestMapping(value = "/media/uploadinfo", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
public ResultInfo uploadMediaInfoHandler(@RequestParam(value = "mediaInfo") String mediaInfo,
                                        @RequestParam(required = false) Integer humanID,
                                        @RequestParam(required = false) Integer fromMobile,
                                        @RequestParam(required = false) Long mediaSize,
                                        @RequestParam(required = false) Long partSize,
                                        @RequestParam(required = false) Long blockSize,
                                        @RequestParam(required = false) Integer partNO,
                                        @RequestParam(required = false) String fn,
                                        @RequestPart(value = "files") MultipartFile[] files,
                                        @RequestParam(required = false, defaultValue = "false") Boolean replace,"false")
                                        @RequestParam(required = false, defaultValue = "false") Boolean checkExist){
                // you will find that files is null, because the part name is not files but attachrec
}

Comment From: spencergibb

Please open an issue in https://github.com/OpenFeign/feign-form

Comment From: GongchuangSu

It responds too slowly!Why can't you solve this problem