Spring cloud 是否可以在BootstrapConfiguration上使用@EnableFeignClient？

我想使用来自

PropertySourceLocator

的假客户端，该客户端必须在引导过程中注册。我的

spring.factories中有以下内容：

org.springframework.cloud.bootstrap.BootstrapConfiguration=\
test.PropertiesConfiguration

与

外部客户端自动连接到
MyPropertySourceLocator
。然而，虽然同一个客户机在常规bean中工作，但在这里它不工作。所有请求均失败，但出现此异常：

feign.codec.DecodeException: No qualifying bean of type [org.springframework.boot.autoconfigure.web.HttpMessageConverters] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at feign.SynchronousMethodHandler.decode(SynchronousMethodHandler.java:173)
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:141)
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:96)
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:92)
    at com.sun.proxy.$Proxy23.get(Unknown Source)
    at test.MyPropertySourceLocator$1.getProperty(MyPropertySourceLocator.java:32)
    at org.springframework.core.env.CompositePropertySource.getProperty(CompositePropertySource.java:59)
    at org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:84)
    at org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:60)
    at org.springframework.core.env.AbstractEnvironment.getProperty(AbstractEnvironment.java:511)
    at org.springframework.context.support.PropertySourcesPlaceholderConfigurer$1.getProperty(PropertySourcesPlaceholderConfigurer.java:135)
    at org.springframework.context.support.PropertySourcesPlaceholderConfigurer$1.getProperty(PropertySourcesPlaceholderConfigurer.java:132)
    at org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:84)
    at org.springframework.core.env.PropertySourcesPropertyResolver.getPropertyAsRawString(PropertySourcesPropertyResolver.java:70)
    at org.springframework.core.env.AbstractPropertyResolver$1.resolvePlaceholder(AbstractPropertyResolver.java:207)
    at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:153)
    at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
    at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:204)
    at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:178)
    at org.springframework.context.support.PropertySourcesPlaceholderConfigurer$2.resolveStringValue(PropertySourcesPlaceholderConfigurer.java:175)
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:801)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:962)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:342)
    // SNIP
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.boot.autoconfigure.web.HttpMessageConverters] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyObjectFactory.getObject(DefaultListableBeanFactory.java:1419)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyProvider.get(DefaultListableBeanFactory.java:1436)
    at org.springframework.cloud.netflix.feign.support.SpringDecoder.decode(SpringDecoder.java:57)
    at feign.SynchronousMethodHandler.decode(SynchronousMethodHandler.java:169)
    ... 93 common frames omitted

这发生在
@FeignClient（url=“localhost:8080”）
上。将ribbon与
@FeignClient（“config”）
一起使用完全失败：

Caused by: java.lang.NullPointerException
    at feign.ribbon.LoadBalancingTarget.apply(LoadBalancingTarget.java:91)
    at feign.SynchronousMethodHandler.targetRequest(SynchronousMethodHandler.java:164)
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:108)
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:96)
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:92)
    at com.sun.proxy.$Proxy26.get(Unknown Source)
    at test.MyPropertySourceLocator$1.getProperty(MyPropertySourceLocator.java:32)

我想使用REST访问配置（并因此假装）。当然，可能的解决办法是直接使用feign
 引导上下文应该是轻量级的（并且创建速度很快），因此它不是一个完整的
@EnableAutoconfiguration
。要使用
@FeignClient
，您需要导入
FeignAutoConfiguration
（以及任何依赖于它的内容，这并不需要太多IIRC）。
实际上，导入
HttpMessageConvertersAutoConfiguration
就成功了。但我没能让丝带工作。我尝试导入
RibbonAutoConfiguration
和
假装RibbonClientAutoConfiguration
，但总是失败，因为“负载平衡器没有客户端可用的服务器”如果“负载平衡器没有客户端可用的服务器”，那么您可能没有给它一个物理地址。我认为对于bootstrap来说，可能最好不要依赖更高级别的工具，比如Feign，所以很好你有了一些东西可以工作。我在application.yml和bootstrap.yml中有一个列表，但在bootstrap期间这两个工具都不可用。反正我也不打算用ribbon，所以我就把它忘了。无论如何，谢谢你。
Caused by: java.lang.NullPointerException
    at feign.ribbon.LoadBalancingTarget.apply(LoadBalancingTarget.java:91)
    at feign.SynchronousMethodHandler.targetRequest(SynchronousMethodHandler.java:164)
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:108)
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:96)
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:92)
    at com.sun.proxy.$Proxy26.get(Unknown Source)
    at test.MyPropertySourceLocator$1.getProperty(MyPropertySourceLocator.java:32)