如何排除特定Spring Cloud Feign客户机的RequestInterceptor？

Question

@FeignClient(value = "foo", configuration = FooClientConfig.class)
public interface FooClient {
//operations
}

@Configuration
public class FooClientConfig{

//How do I exclude global interceptors from this client configuration?
}

Answer 1

解决此问题的一种增强方法是将自定义头传递给请求，如下所示：

@PostMapping("post-path")
ResponseEntity<Void> postRequest(@RequestHeader(HEADER_CLIENT_NAME) String feignClientName, @RequestBody RequestBody requestBody);

我只想在拦截器中设置这个虚假客户机的头。在设置标头之前，拦截器首先检查HEADER_CLIENT_NAME标头是否存在并且是否具有所需的值：

private boolean criteriaMatches(RequestTemplate requestTemplate) {
    Map<String, Collection<String>> headers = requestTemplate.headers();
    return headers.containsKey(HEADER_CLIENT_NAME)
        && headers.get(HEADER_CLIENT_NAME).contains("feign-client-name");
}

因此，您可以在设置基本身份验证之前进行检查。在拦截器中：

@Override
public void apply(RequestTemplate template) {
    if (criteriaMatches(template)) {
        /*apply auth header*/
    }
}

feignClient.postRequest("feign-client-name", postBody);