设置feign配置日志级别

古城微笑少年丶 2022-10-22 11:56 411阅读 0赞

## 设置feign配置日志级别 ##

#### 一、使用java编码的方式 ####

基于《<spring-cloud.version>Greenwich.RC2</spring-cloud.version>》

根据spring cloud文档: [https://cloud.spring.io/spring-cloud-static/Greenwich.RC2/single/spring-cloud.html\#\_feign\_logging][https_cloud.spring.io_spring-cloud-static_Greenwich.RC2_single_spring-cloud.html_feign_logging]

feign日志  
在创建feign client的时候，就创建了logger, 默认logger的名称是创建feign client的服务接口类的全路径，通俗的来讲就是加了@FeignClient接口类的全路径

首先在application.yml文件中指定日志级别:

logging:
      level:
        com.**.api.service.IFeignService: DEBUG

设置日志记录的级别  
logger有四种类型:NONE,BASIC,HEADERS, FULL,通过注册Bean来设置日志记录级别:

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

在feign client加上：

@FeignClient(name = "IFeignService", configuration = LogConfiguration.class)
    public interface IFeignService { 
    
        @RequestMapping(value = "/index", method = RequestMethod.GET)
        public String invokeSayHi();
    
    }

日志记录结果:

2018-12-31    c.g.v.f.c.api.service.IFeignService  <--- HTTP/1.1 200 (462ms)
    2018-12-31    c.g.v.f.c.api.service.IFeignService  content-length: 5
    2018-12-31    c.g.v.f.c.api.service.IFeignService  content-type: text/plain;charset=UTF-8
    2018-12-31    c.g.v.f.c.api.service.IFeignService  date: Mon, 31 Dec 2018 13:35:48 GMT
    2018-12-31    c.g.v.f.c.api.service.IFeignService 
    2018-12-31    c.g.v.f.c.api.service.IFeignService  index
    2018-12-31    c.g.v.f.c.api.service.IFeignService  <--- END HTTP (5-byte body)

内容参考  
[https://blog.csdn.net/u013887008/article/details/85489631][https_blog.csdn.net_u013887008_article_details_85489631]

#### 缺点： ####

如上方法，针对每一个有@FeignClient注解的地方都要增加configuration配置，项目大了，不好到处修改。

#### 二、使用配置文件的方式 ####

在application.yml文件中全局配置

logging:
      level:
    #    com.maybesuch.contentcenter.feignclient.UserCenterFeignClient: debug
        com.maybesuch: debug
    
    feign:
      client:
        config:
          # 要调用服务的名称
          user-center:
            loggerLevel: full

缺点同上，有多少个调用服务名称，就需要配置多个。  
参考[https://www.cnblogs.com/maybesuch/p/12175002.html][https_www.cnblogs.com_maybesuch_p_12175002.html]

#### 重写feign.logger类，并加入配置 ####

则可以使用如下方法  
比如打印info信息级别的日志  
1、重写feign.logger类

public class QjxFeignLogger extends feign.Logger { 
    
            private final Logger logger;
    
            public QjxFeignLogger() { 
                this(feign.Logger.class);
              }
    
            public QjxFeignLogger(Class<?> clazz) { 
                this(LoggerFactory.getLogger(clazz));
              }
    
            public QjxFeignLogger(String name) { 
                this(LoggerFactory.getLogger(name));
              }
    
            QjxFeignLogger(Logger logger) { 
                this.logger = logger;
              }
            
            
            @Override
            protected void logRequest(String configKey, Level logLevel, Request request) { 
                    if (logger.isInfoEnabled()) { 
                            super.logRequest(configKey, logLevel, request);
                    }
            }
    
            @Override
            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response, long elapsedTime)
                            throws IOException { 
                    if (logger.isInfoEnabled()) { 
                            return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
                    }
                    return response;
            }
    
            @Override
            protected void log(String configKey, String format, Object... args) { 
                    // Not using SLF4J's support for parameterized messages (even though it
                    // would be more efficient) because it would
                    // require the incoming message formats to be SLF4J-specific.
                    if (logger.isInfoEnabled()) { 
                            logger.info(String.format(methodTag(configKey) + format, args));
                    }
            }
    }

自定义一个Logger类，继承Feign.Logger，将代码中的Debug修改成为Info

2、自定义Logger类加入配置

@Configuration
      public class FeignClientConfig { 
            @Bean
            Logger.Level feignLoggerLevel() { 
                    return Logger.Level.FULL;
            }
            
            @Bean
            Logger QjxFeign(){ 
                    return new QjxFeignLogger();
            }   
      }

将自定义Logger类加入到Feign客户端配置的Config中，这样Feign系统间调用就能打印出Info级别的日志。

转载自 [https://www.cnblogs.com/lkd934/p/9541417.html][https_www.cnblogs.com_lkd934_p_9541417.html]

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[https_cloud.spring.io_spring-cloud-static_Greenwich.RC2_single_spring-cloud.html_feign_logging]: https://cloud.spring.io/spring-cloud-static/Greenwich.RC2/single/spring-cloud.html#_feign_logging
[https_blog.csdn.net_u013887008_article_details_85489631]: https://blog.csdn.net/u013887008/article/details/85489631
[https_www.cnblogs.com_maybesuch_p_12175002.html]: https://www.cnblogs.com/maybesuch/p/12175002.html
[https_www.cnblogs.com_lkd934_p_9541417.html]: https://www.cnblogs.com/lkd934/p/9541417.html
[Link 1]: https://www.captainai.net/flyop007/