如何使用Feign?logging開啟調用日志

這篇文章主要講解了“如何使用Feign logging開啟調用日志”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“如何使用Feign logging開啟調用日志”吧！

Feign logging開啟調用日志

application.yml 配置

logging:
  level:
    yourproject.userClient: debug

FeignConfiguration

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

效果

Feign啟用日志

需求

想追蹤Feign客戶端發送的數據.

Feign在構建被@FeignClient注解修飾的服務客戶端時，會為每一個客戶端都創建一個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。

實現步驟

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整.  Logger.Level的源碼中規定了以下幾個級別：

  public enum Level {
    // 不記錄日志 (默認)。
    NONE,
    //只記錄請求方法和URL以及響應狀態代碼和執行時間
    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，正文和元數據
    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)

感謝各位的閱讀，以上就是“如何使用Feign logging開啟調用日志”的內容了，經過本文的學習后，相信大家對如何使用Feign logging開啟調用日志這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！