OpenFeign超时时间设置不生效问题排查

最近升级springboot 3，突然发现配置文件中的openFeign的超时时间设置不生效了

之前配置如下：

feign:
  client:
    config:
      default:
        connectTimeout: 3000
        readTimeout: 5000

查资料都是说ribbon或者hystrix的超时时间设置问题，但实际并不是，没办法，去看源码，在FeignClientFactoryBean这个类里的

protected void configureFeign(FeignClientFactory context, Feign.Builder builder) {FeignClientProperties properties = this.beanFactory != null ? (FeignClientProperties)this.beanFactory.getBean(FeignClientProperties.class) : (FeignClientProperties)this.applicationContext.getBean(FeignClientProperties.class);FeignClientConfigurer feignClientConfigurer = (FeignClientConfigurer)this.getOptional(context, FeignClientConfigurer.class);this.setInheritParentContext(feignClientConfigurer.inheritParentConfiguration());if (properties != null && this.inheritParentContext) {if (properties.isDefaultToProperties()) {this.configureUsingConfiguration(context, builder);this.configureUsingProperties((FeignClientProperties.FeignClientConfiguration)properties.getConfig().get(properties.getDefaultConfig()), builder);this.configureUsingProperties((FeignClientProperties.FeignClientConfiguration)properties.getConfig().get(this.contextId), builder);} else {this.configureUsingProperties((FeignClientProperties.FeignClientConfiguration)properties.getConfig().get(properties.getDefaultConfig()), builder);this.configureUsingProperties((FeignClientProperties.FeignClientConfiguration)properties.getConfig().get(this.contextId), builder);this.configureUsingConfiguration(context, builder);}} else {this.configureUsingConfiguration(context, builder);}}

可以看到配置是从FeignClientProperties这里读的

完后进入这个类，发现注解

@ConfigurationProperties("spring.cloud.openfeign.client")

对比之前的版本，这个类的注解为

@ConfigurationProperties("feign.client")

所以问题很明显了，将配置改为

spring:
  cloud:
    openfeign:
      client:
        config:
          default:
            connectTimeout: 3000
            readTimeout: 5000

问题解决

多说两句，其实除了看源码，直接看官网可能更直接一点

https://docs.spring.io/spring-cloud-openfeign/docs/current/reference/html/#timeout-handling