第一步

package com.niuniu.common.config;

import com.niuniu.common.CommonConstant;
import com.niuniu.common.utils.UserContext;
import feign.Logger;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;

public class DefaultFeignConfig {
    @Bean
    public Logger.Level feignLogLevel(){
        return Logger.Level.FULL;
    }

    
}

第二步调用方的application.yaml文件

logging:
  level:
    com.niuniu.user.feignclient.OrderClient: debug 

测试结果：

package com.niuniu.user.feignclient;

import com.niuniu.common.config.DefaultFeignConfig;
import com.niuniu.user.model.Order;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.List;

@Component
@FeignClient(value = "order-service", configuration = DefaultFeignConfig.class)
public interface OrderClient {
    @GetMapping(value = "/order-service/order/queryOrderByIds")
    List<Order> queryOrderByIds(@RequestParam("ids") List<Long> ids);
}