配置和说明

配置

feign出于性能考虑,默认是没有日志的,需要手动开启.
​

package com.tuling.mall.feigndemo.config;

import com.tuling.mall.feigndemo.interceptor.FeignAuthRequestInterceptor;
import feign.Contract;
import feign.Logger;
import feign.Request;
import feign.auth.BasicAuthRequestInterceptor;
import feign.codec.Decoder;
import feign.codec.Encoder;
import feign.jackson.JacksonDecoder;
import feign.jackson.JacksonEncoder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration // 注意,这个配置了@Configuration之后就是全局的bean了,就需要成了全局配置了
public class FeignConfig {
    /**
     * 日志级别
     * 通过源码可以看到日志等级有 4 种，分别是：
     * NONE：不输出日志。
     * BASIC：只输出请求方法的 URL 和响应的状态码以及接口执行的时间。
     * HEADERS：将 BASIC 信息和请求头信息输出。
     * FULL：输出完整的请求信息。
     */
    @Bean
    public Logger.Level feignLoggerLevel() {
        return Logger.Level.FULL;
    }
}


BASIC级别

只输出请求方法的 URL 和响应的状态码以及接口执行的时间。

@Bean
    public Logger.Level feignLoggerLevel() {
        return Logger.Level.BASIC;
    }

当feign进行远程调用的时候控制台输出:
​

2022-01-12 20:39:20.537 DEBUG 30012 --- [nio-8055-exec-1] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] ---> GET http://mall-order/order/findOrderByUserId/1 HTTP/1.1
2022-01-12 20:39:20.638 DEBUG 30012 --- [nio-8055-exec-1] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] <--- HTTP/1.1 200 (80ms)



HEADERS

将 BASIC 信息和请求头信息输出。

@Bean
    public Logger.Level feignLoggerLevel() {
        return Logger.Level.HEADERS;
    }

当feign进行远程调用的时候控制台输出

2022-01-12 20:40:37.499 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] ---> GET http://mall-order/order/findOrderByUserId/1 HTTP/1.1
2022-01-12 20:40:37.500 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] Accept-Encoding: gzip
2022-01-12 20:40:37.500 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] Accept-Encoding: deflate
2022-01-12 20:40:37.500 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] Authorization: 563116cd-7124-4564-9ac5-1c740e8d70ec
2022-01-12 20:40:37.500 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] ---> END HTTP (0-byte body)
2022-01-12 20:40:37.553 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] <--- HTTP/1.1 200 (50ms)
2022-01-12 20:40:37.553 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] connection: keep-alive
2022-01-12 20:40:37.553 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] content-type: application/json
2022-01-12 20:40:37.554 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] date: Wed, 12 Jan 2022 12:40:37 GMT
2022-01-12 20:40:37.554 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] keep-alive: timeout=60
2022-01-12 20:40:37.554 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] transfer-encoding: chunked
2022-01-12 20:40:37.554 DEBUG 27368 --- [nio-8055-exec-5] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] <--- END HTTP (100-byte body)


FULL级别

输出完整的请求信息。

@Bean
    public Logger.Level feignLoggerLevel() {
        return Logger.Level.FULL;
    }

当feign进行远程调用的时候控制台输出

2022-01-12 20:41:18.168 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] ---> GET http://mall-order/order/findOrderByUserId/1 HTTP/1.1
2022-01-12 20:41:18.169 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] Accept-Encoding: gzip
2022-01-12 20:41:18.169 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] Accept-Encoding: deflate
2022-01-12 20:41:18.169 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] Authorization: f4ff1ace-8aa3-4d6e-974f-83c60821210d
2022-01-12 20:41:18.169 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] ---> END HTTP (0-byte body)
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] <--- HTTP/1.1 200 (45ms)
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] connection: keep-alive
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] content-type: application/json
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] date: Wed, 12 Jan 2022 12:41:18 GMT
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] keep-alive: timeout=60
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] transfer-encoding: chunked
2022-01-12 20:41:18.216 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] 
2022-01-12 20:41:18.217 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] {"msg":"success","code":0,"orders":[{"id":1,"userId":"1","commodityCode":"1","count":1,"amount":1}]}
2022-01-12 20:41:18.217 DEBUG 30232 --- [nio-8055-exec-2] c.t.m.feigndemo.feign.OrderFeignService  : [OrderFeignService#findOrderByUserId] <--- END HTTP (100-byte body)

如果只想让某一个feign调用的时候有日志怎么办

在Java代码里面配置

可以用configuration = Feign2Config.class 来指定你的feign配置文件,然后在这个FeignConfig.class 配置文件里面配置日志,这样的话,只有这一个feign接口类打印日志了
​

需要注意的是Feign2Config不要加@Configuration注解,因为如果加了的话,就成了全局配置类了,那么所有的feign接口都会使用这个配置文件了.
​

@FeignClient(value = "mall-order",path = "/order",configuration = Feign2Config.class)
public interface OrderFeignService {

    @RequestMapping("/findOrderByUserId/{userId}")
    R findOrderByUserId(@PathVariable("userId") Integer userId);


    @RequestMapping(value = "/save",consumes = MediaType.APPLICATION_JSON_VALUE)
    R save(@RequestBody OrderVo order);
package com.tuling.mall.feigndemo.config;

import com.tuling.mall.feigndemo.interceptor.FeignAuthRequestInterceptor;
import feign.Contract;
import feign.Logger;
import feign.Request;
import feign.auth.BasicAuthRequestInterceptor;
import feign.codec.Decoder;
import feign.codec.Encoder;
import feign.jackson.JacksonDecoder;
import feign.jackson.JacksonEncoder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

//@Configuration // 注意,这个配置了@Configuration之后就是全局的bean了,就需要成了全局配置了
public class Feign2Config {
    /**
     * 日志级别
     * 通过源码可以看到日志等级有 4 种，分别是：
     * NONE：不输出日志。
     * BASIC：只输出请求方法的 URL 和响应的状态码以及接口执行的时间。
     * HEADERS：将 BASIC 信息和请求头信息输出。
     * FULL：输出完整的请求信息。
     */
    @Bean
    public Logger.Level feignLoggerLevel() {
        return Logger.Level.FULL;
    }
}

在yaml里面配置

这样 mall-order微服务的feign日志级别就是FULL了.

feign:
  client:
    config:
      mall-order:  #对应微服务
        loggerLevel: FULL