Feign form data parameter example

This is an example application for reproducing the issue with Feign/Spring Cloud OpenFeign passing parameters annotated with @RequestParam as query params instead of parts in multipart/form-data requests.

Either check out the test scenario in ServerApiClientTest or launch the applications directly.

To test with real applications, start the Java application(FeignFormDataParameterApplication) and the node server(app.js). Then send some requests with a file:

1. Directly to the node server:

curl --location 'http://127.0.0.1:8090/server/resources' \
--form 'file=@"/Users/user/Downloads/file.txt"' \
--form 'category="server-category"' \
--form 'priority="3"'

2. Through the Feign client:

curl --location 'http://127.0.0.1:8080/client/resources' \
--form 'file=@"/Users/user/Downloads/file.txt"' \
--form 'category="client-category"' \
--form 'priority="2"'