如何使用Feign logging开启调用日志(feign,logging,开发技术)

Feign logging开启调用日志

application.yml 配置

logging:level:yourproject.userClient:debug

FeignConfiguration

@ConfigurationpublicclassFeignConfiguration{@BeanLogger.LevelfeignLoggerLevel(){returnLogger.Level.FULL;}}

效果

Feign启用日志

需求

想追踪Feign客户端发送的数据.

Feign在构建被@FeignClient注解修饰的服务客户端时，会为每一个客户端都创建一个feign.Logger实例，这样就可以利用该日志对象的DEBUG模式来帮助分析Feign的请求细节。

实现步骤

1. 在application.yml中使用 logging.level.<Feign客户端对应的接口的全限定名> 的参数配置格式来开启指定客户端日志.

logging:level:com:yc:springcloud2:service:IProductClientService:DEBUG#注意这里是Feign客户端接口的完整路径，这是我们要监控日志的接口

2. 但由于Feign客户端默认的Logger.Level对象定义为NONE级别，因此需要对它进行调整. Logger.Level的源码中规定了以下几个级别：

publicenumLevel{//不记录日志(默认)。NONE,//只记录请求方法和URL以及响应状态代码和执行时间BASIC,//记录请求和应答的头的基本信息HEADERS,//记录请求和响应的头信息，正文和元数据FULL}

那么如何将级别从NONE修改过来呢？这里有两种方式：

1. 全局配置: 在应用主配置类中加入 Logger.Level的Bean的创建和托管，这里这个应用中所有的Feign客户端都会按这个日志级别.

@SpringBootConfigurationpublicclassFeignLogConfig{@BeanLogger.LevelfeignLoggerLevel(){returnLogger.Level.FULL;}}

运行 程序 [microservice-consumer-feign],查看输出结果。

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. 针对一个具体的Feign客户端单独配置. 比如这里对一个Feign客户端进行日志配置.

@ConfigurationpublicclassFeignClientConfig{//加入安全配置@BeanpublicBasicAuthRequestInterceptorgetBasicAuthRequestInterceptor(){returnnewBasicAuthRequestInterceptor("admin","a");}@BeanLogger.LevelfeignLoggerLevel(){returnLogger.Level.FULL;}}

重启应用程序，查看输出：

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)