Feign调用报错

在学习Gateway组件的时候，采用了Feign组件调用接口进行JWT权限认证，报出如下错误

feign.codec.DecodeException: No qualifying bean of type 'org.springframework.boot.autoconfigure.http.HttpMessageConverters' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
	at feign.AsyncResponseHandler.decode(AsyncResponseHandler.java:119) ~[feign-core-10.10.1.jar:na]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	|_ checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
	|_ checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
	|_ checkpoint ⇢ HTTP GET "/java/sayHi" [ExceptionHandlingWebHandler]

解决方法

之前没有遇到过，记录一下。从报错的内容来看是找不到装配的bean，既然找不到就尝试手动注入，代码如下：

    @Bean
    @ConditionalOnMissingBean
    public HttpMessageConverters messageConverters(ObjectProvider<HttpMessageConverter<?>> converters) {
        return new HttpMessageConverters(converters.orderedStream().collect(Collectors.toList()));
    }

放入configuration注解的配置类中，问题解决。

问题原因

暂时还不知道为什么会发生装配找不到的情况，若有大神知道其中的原因，请打出评论！