java.lang.NoClassDefFoundError: feign/Request$Body in feign while adding support for multipart/form-data - multipartform-data

Question

I am trying to proxy multipart request via feign.
#PostMapping(value = "{pathUri1}/{pathUri2}",consumes = MediaType.MULTIPART_FORM_DATA_VALUE,produces = MediaType.APPLICATION_JSON_VALUE)
ResponseEntity<BaseResponse<?>> uploadFileCall(#PathVariable(value = "pathUri1") String pathUri1, #PathVariable(value = "pathUri2") String pathUri2, #RequestPart(name = "file") MultipartFile file, #RequestParam Map<Object,Object> requestParam, #RequestHeader HttpHeaders httpHeaders);
this is service call.
#Configuration
class MultipartSupportConfig {
#Autowired
ObjectFactory<HttpMessageConverters> messageConverters;
#Bean
#Primary
#Scope("prototype")
public Encoder feignFormEncoder() {
return new SpringFormEncoder(new SpringEncoder(messageConverters));
}
}
added encoder config for multipart/form-data .
I have followed this
https://github.com/OpenFeign/feign-form
But I am getting hystrixRunTimeException which is caused because of
java.lang.NoClassDefFoundError: feign/Request$Body error.

Answer 1

Use feign-form-spring 3.4.1 version.
Gradle
compile(group: 'io.github.openfeign.form', name: 'feign-form-spring', version: '3.4.1')
Maven
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form</artifactId>
<version>3.4.1</version>
</dependency>
Check requirements https://github.com/OpenFeign/feign-form#requirements

Answer 2

According to the open-feign's github document, Please Note the feign-form's versions:
all feign-form releases before 3.5.0 works with OpenFeign 9.* versions;
starting from feign-form's version 3.5.0, the module works with OpenFeign 10.1.0 versions and greater.

Answer 3

The following config works for me:
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-jackson</artifactId>
<version>${feign.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-httpclient</artifactId>
<version>${feign.version}</version>
</dependency>
Where:
<feign.version>11.0</feign.version>
<spring-cloud.version>Hoxton.SR3</spring-cloud.version>