后台没有抛出“feign.Client”类型的合格 bean

Question

我的应用程序后台抛出异常。该错误未记录，但由名为 Dynatrace 的第三方工具捕获，由于该工具，我们能够看到下面的异常。

我们正在使用 Java 11 和依赖项：

• spring-boot-starter-parent 2.7.5
• spring-cloud-dependency 2021.0.5
• spring-boot-starter-web
• spring-boot-starter-aop
• spring-cloud-starter-sleuth
• spring-cloud-starter-openfeign
• spring-boot-starter-data-redis
• spring-boot-starter-cache
• 绝地武士
• spring-boot-starter-actuator
• spring-boot-starter-web

我从下面的堆栈跟踪中可以了解到，@Cacheable 方法和 @Cacheable 方法内部使用的 @FeignClient 存在一些问题。仅当存在缓存未命中时才会发生此错误。

我尝试用 redisson 替换 jedis，但没有什么区别。有谁知道为什么会这样？

假冒客户：

@FeignClient(name = "pricing-client", url = "${api.pricing.url}")
public interface PricingClient {

    @PostMapping(consumes = "application/json")
    ResponseEntity<String> postRule(@RequestHeader("Authorization") String authorizationToken, @RequestBody PricingRequest request);

}

这是堆栈跟踪：

Exception:
org.springframework.beans.factory.NoSuchBeanDefinitionException

Message:
No qualifying bean of type 'feign.Client' available

Stacktrace:
org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:351)
org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:342)
org.springframework.cloud.sleuth.instrument.web.client.feign.LazyClient.delegate(LazyClient.java:60)
org.springframework.cloud.sleuth.instrument.web.client.feign.LazyClient.execute(LazyClient.java:54)
feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:121)
feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:91)
feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100)
org.springframework.cloud.openfeign.FeignCachingInvocationHandlerFactory$1.proceed(FeignCachingInvocationHandlerFactory.java:66)
org.springframework.cache.interceptor.CacheInterceptor.lambda$
org.springframework.cache.interceptor.CacheInterceptor$$Lambda$.invoke
org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:351)
org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:64)
org.springframework.cloud.openfeign.FeignCachingInvocationHandlerFactory.lambda$
org.springframework.cloud.openfeign.FeignCachingInvocationHandlerFactory$$Lambda$.invoke
com.sun.proxy.$Proxy.postRule
com.custom.calc.services.CustomPricingService.getCustomRule(CustomPricingService.java:50)
com.custom.calc.services.CustomPricingService$$FastClassBySpringCGLIB$$377e0b96.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
org.springframework.cache.interceptor.CacheInterceptor.lambda$
org.springframework.cache.interceptor.CacheInterceptor$$Lambda$.invoke
org.springframework.cache.interceptor.CacheAspectSupport.invokeOperation(CacheAspectSupport.java:366)
org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:421)
org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:345)
org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:64)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708)
com.custom.calc.services.CustomPricingService$$EnhancerBySpringCGLIB$$.getCustomRule
com.custom.calc.services.PricingResilientService.getCustomRule(PricingResilientService.java:28)
com.custom.calc.services.CalculateCustomService.calculateBalance(CalculateCustomService.java:32)
com.custom.calc.controllers.CalculateCustomController.calculateBalance(CalculateCustomController.java:35)
jdk.internal.reflect.NativeMethodAccessorImpl.invoke0
jdk.internal.reflect.NativeMethodAccessorImpl.invoke
jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
java.lang.reflect.Method.invoke
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)

尝试替换依赖项并从 application.yml 中的 feign 配置中删除定价客户端

Answer 1

我通过定义默认的 Client @Bean 并使用 FeignConfig.class 作为客户端中的配置解决了这个错误

public class FeignConfig {

    @Bean
    public Client feignClient() {
        return new Client.Default(null, null);
    }

}

Answer 2

如果您只使用

@SpringBootTest

注释而没有相应的

@SpringBootApplication

带注释的类，则必须在

@EnableFeignClients

旁边同时使用

@ImportAutoConfiguration(FeignAutoConfiguration.class)

和

@SpringBootTest

（或在与

@Configuration

一起使用的

@SpringBootTest

类上） ).