Feign logging開啟調(diào)用日志

application.yml 配置

logging:
  level:
    yourproject.userClient: debug

FeignConfiguration

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

效果

參考官方：http://cloud.spring.io/spring-cloud-openfeign/single/spring-cloud-openfeign.html#_feign_logging

Feign啟用日志

需求

想追蹤Feign客戶端發(fā)送的數(shù)據(jù).

Feign在構(gòu)建被@FeignClient注解修飾的服務客戶端時，會為每一個客戶端都創(chuàng)建一個feign.Logger實例，這樣就可以利用該日志對象的DEBUG模式來幫助分析Feign的請求細節(jié)。

實現(xiàn)步驟

1. 在application.yml中使用 logging.level.<Feign客戶端對應的接口的全限定名> 的參數(shù)配置格式來開啟指定客戶端日志. 

logging:
? level:
? ? com:
? ? ? yc:
? ? ? ? springcloud2:
? ? ? ? ? service:
? ? ? ? ? ? IProductClientService: DEBUG ? #注意這里是Feign客戶端接口的完整路徑，這是我們要監(jiān)控日志的接口

2. 但由于Feign客戶端默認的Logger.Level對象定義為NONE級別，因此需要對它進行調(diào)整.  Logger.Level的源碼中規(guī)定了以下幾個級別：

  public enum Level {
    // 不記錄日志 (默認)。
    NONE,
    //只記錄請求方法和URL以及響應狀態(tài)代碼和執(zhí)行時間
    BASIC,
    //記錄請求和應答的頭的基本信息
    HEADERS,
    //記錄請求和響應的頭信息，正文和元數(shù)據(jù)
    FULL
  }

那么如何將級別從NONE修改過來呢？這里有兩種方式：

1. 全局配置: 在應用主配置類中加入 Logger.Level的Bean的創(chuàng)建和托管，這里這個應用中所有的Feign客戶端都會按這個日志級別. 

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

運行 程序 [microservice-consumer-feign],查看輸出結(jié)果。 

2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] <--- HTTP/1.1 200 (799ms)
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] cache-control: no-cache, no-store, max-age=0, must-revalidate
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] connection: keep-alive
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] content-type: application/json;charset=UTF-8
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] date: Fri, 16 Oct 2020 07:14:45 GMT
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] expires: 0
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] keep-alive: timeout=60
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] pragma: no-cache
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] transfer-encoding: chunked
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] x-content-type-options: nosniff
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] x-frame-options: DENY
2020-10-16 15:14:45.634 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] x-xss-protection: 1; mode=block
2020-10-16 15:14:45.635 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] 
2020-10-16 15:14:45.636 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] [{"productId":1,"productName":"a","productDesc":"good"}]
2020-10-16 15:14:45.637 DEBUG 15604 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] <--- END HTTP (56-byte body)

2. 針對一個具體的Feign客戶端單獨配置.  比如這里對一個Feign客戶端進行日志配置. 

@Configuration
public class FeignClientConfig {
    //加入安全配置
    @Bean
    public BasicAuthRequestInterceptor getBasicAuthRequestInterceptor(){
        return new BasicAuthRequestInterceptor("admin","a");
    }
 
    @Bean
    Logger.Level feignLoggerLevel(){
        return Logger.Level.FULL;
    }
}

重啟應用程序，查看輸出：

2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] <--- HTTP/1.1 200 (476ms)
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] cache-control: no-cache, no-store, max-age=0, must-revalidate
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] connection: keep-alive
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] content-type: application/json;charset=UTF-8
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] date: Fri, 16 Oct 2020 07:20:21 GMT
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] expires: 0
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] keep-alive: timeout=60
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] pragma: no-cache
2020-10-16 15:20:21.856 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] transfer-encoding: chunked
2020-10-16 15:20:21.857 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] x-content-type-options: nosniff
2020-10-16 15:20:21.857 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] x-frame-options: DENY
2020-10-16 15:20:21.857 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] x-xss-protection: 1; mode=block
2020-10-16 15:20:21.857 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] 
2020-10-16 15:20:21.859 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] [{"productId":1,"productName":"a","productDesc":"good"}]
2020-10-16 15:20:21.859 DEBUG 15620 --- [nio-9999-exec-1] c.y.s.service.IProductClientService      : [IProductClientService#listProduct] <--- END HTTP (56-byte body)

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。

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