14.Spring-Cloud-Feign中请求压缩配置和日志配置

àì夳堔傛蜴生んèń 2022-05-25 02:09 222阅读 0赞

##    请求压缩配置 ##

Spring Cloud  feign支持对请求与响应进行GZIP压缩,以减少通信中的性能损耗,主要是在spring-cloud-netflix-core.jar文件中.

默认对请求和相应压缩是禁用的，从  
org.springframework.cloud.netflix.feign.encoding.FeignContentGzipEncodingAutoConfiguration类中可以看到请求压缩是禁用的  
源码：  
@ConditionalOnProperty(value = "feign.compression.request.enabled", matchIfMissing = false)  
org.springframework.cloud.netflix.feign.encoding.FeignAcceptGzipEncodingAutoConfiguration.class类中可以看到响应压缩是禁用的  
源码：

@ConditionalOnProperty(value = "feign.compression.response.enabled", matchIfMissing = false)

org.springframework.cloud.netflix.feign.encoding.FeignClientEncodingProperties类中配置了一些默认的编码属性  
源码：  
@ConfigurationProperties("feign.compression.request")  
public class FeignClientEncodingProperties \{  
    /\*\*  
     \* The list of supported mime types.  
     \*/  
    private String\[\] mimeTypes = new String\[\]\{"text/xml", "application/xml", "application/json"\};  
    /\*\*  
     \* The minimum threshold content size.  
     \*/  
    private int minRequestSize = 2048;

在application.properties中自定义请求压缩

feign.compression.request.enabled=true
    feign.compression.response.enabled=true
    #默认配置
    feign.compression.request.mine-types=text/xml,application/xml,application/json 
    #默认配置
    feign.compression.request.min-request-size=2048

日志配置

在构建@FeignClient注解修饰的服务客户端时，会为一个客户端都创建一个feign.Logger实例，可以利用该日志对象的DEBUG模式来分析Feign的请求细节。具体配置在application.properties中配置：

logging.level.<FeignClient>=DEBUG开启指定Feign客户端的DEBUG模式日志；

<FeignClient>为Feign客户端定义接口的完整路径

如：  
logging.level.com.niugang.service.HelloService=DEBUG

只添加上面配置还无法实现对DEBUG日志的输出，以因为Feign客户端默认的logger.level对象定义为none级别，所以不会记录feign调用过程中的信息。

feign中日志级别  
  /\*\*  
   \* Controls the level of logging.  
   \*/  
  public enum Level \{  
    /\*\*  
     \* No logging.不记录日志  
     \*/  
    NONE,  
    /\*\*  
\*只记录请求方法和URL，以及响应状态代码和执行时间。  
     \* Log only the request method and URL and the response status code and execution time.  
     \*/  
    BASIC,  
    /\*\*  
\*记录请求和响应头基本信息。  
     \* Log the basic information along with request and response headers.  
     \*/  
    HEADERS,  
    /\*\*  
\*记录请求和响应的标头、正文和元数据  
     \* Log the headers, body, and metadata for both requests and responses.  
     \*/  
    FULL

创建方式一：在启动类上配置

@SpringBootApplication
    @EnableDiscoveryClient
    //扫描声明它们是feign客户端的接口(通过@FeignClient)
    @EnableFeignClients
    public class Application {
    @Bean
    Logger.Level feignLoggerLevel(){
    return Logger.Level.FULL;
    }
    public static void main(String[] args) {
    SpringApplication.run(Application.class, args);
    }
    }

测试

输入：[http://localhost:9001/feign-consumer1/zhangsan][http_localhost_9001_feign-consumer1_zhangsan]

![70][]

输入：[http://localhost:9001/feign-consumer2/zhangsan/15094031789][http_localhost_9001_feign-consumer2_zhangsan_15094031789]

![70 1][]

创建方式二：定义配置类

1.创建专门的配置类

import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import feign.Logger;
    @Configuration
    public class FeignLoggerConfig {
    @Bean
    Logger.Level feignLoggerLevel(){
    return Logger.Level.FULL;
    }
    }

2.在服务调用接口上进行绑定

//value:调用服务的名  
//fallback：配置服务降级类  
//configuration:定制客户端的自定义@configuration。可以包含对组成客户端的片段的重写@Bean定义

@FeignClient(value="service-provide",fallback=ServiceProvideFallBack.class,configuration=FeignLoggerConfig.class)

测试效果和在启动类上配置效果一样

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![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70][]

[http_localhost_9001_feign-consumer1_zhangsan]: http://localhost:9001/feign-consumer1/zhangsan
[70]: /images/20220525/8924bd0a234b40cebe998cbc3c7f2ee6.png
[http_localhost_9001_feign-consumer2_zhangsan_15094031789]: http://localhost:9001/feign-consumer2/zhangsan/15094031789
[70 1]: /images/20220525/0e917deba16146879b72763cd3c14125.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70]: /images/20220525/0227127bc2164c3aaaa38098eb01ac75.png