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I want to consume a REST service from the outside world behind a corporate proxy with authentication. How do I configure Spring Cloud Feign to use our proxy? Note: I'm using feign spring boot implementation, I do not need to make a builder for Feign "Feign.builder () ...", since it's built automatically by spring? I've been looking for this solution to make requests to addresses through the corporate proxy for quite a while and have not found anything at all.

Diego Cândido da Silva
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1 Answers1

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It is possible to do something like this:

@FeignClient(url="${service.url}")
public interface MyClient {
@RequestMapping(method = RequestMethod.GET, value = "/item/{idItem}", consumes = "application/json",
        headers="Authorization: Basic ${service.auth}")
public Item getItem(@PathVariable("idItem") int idItem);
}

as described here: https://github.com/spring-cloud/spring-cloud-netflix/issues/288

These are also relevant if you don't want to hard code headers and url:

Can I configure a @FeignClient url using a properties/yml file?

Using @Headers with dynamic values in Feign client + Spring Cloud (Brixton RC2)

humbaba
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  • That way I can make requests to addresses outside my network even though I'm inside a network with a proxy? – Diego Cândido da Silva Apr 20 '18 at 12:53
  • Ah sorry, you also need to configure feign like this feign.okhttp.enabled=true. – humbaba Apr 20 '18 at 13:22
  • I did what you said but this is giving error here after inserting the option: headers = "Authorization: Basic http://proxy.com:8080". Now I can not start the system start, the following error was generated: String index out of range: -1 – Diego Cândido da Silva Apr 20 '18 at 13:51
  • headers = "Authorization: Basic proxy.com:8080" is not correct. You should put there (${service.auth}) your authentication token (not the url) if you use authentication. If you do not use authentication, just delete the "headers" part. – humbaba Apr 20 '18 at 14:08