java-tutorials/feign-client/src/main/java/com/baeldung/feign/BookControllerFeignClientBuilder.java

package com.baeldung.feign;

import com.baeldung.feign.clients.BookClient;
import feign.Feign;
import feign.Logger;
import feign.gson.GsonDecoder;
import feign.gson.GsonEncoder;
import feign.okhttp.OkHttpClient;
import feign.slf4j.Slf4jLogger;
import lombok.Getter;

@Getter
public class BookControllerFeignClientBuilder {
    private BookClient bookClient = createClient(BookClient.class,
      "http://localhost:8081/api/books");

    private static <T> T createClient(Class<T> type, String uri) {
        return Feign.builder()
          .client(new OkHttpClient())
          .encoder(new GsonEncoder())
          .decoder(new GsonDecoder())
          .logger(new Slf4jLogger(type))
          .logLevel(Logger.Level.FULL)
          .target(type, uri);
    }
}