Spring 云合约无法实例化 [org.springframework.cloud.contract.stubrunner.BatchStubRunner]

Question

我正尝试在现有项目中进行 Spring 云合同集成。我已经让存根验证器工作了。但是当我尝试在客户端中使用该存根时，出现以下异常。我正试图让它离线工作。如果您需要更多详细信息，请告诉我。

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-07-10 15:26:42.330 ERROR 20476 [] --- [main] o.s.boot.SpringApplication - Application startup failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'stubFlowRegistrar' defined in class path resource [org/springframework/cloud/contract/stubrunner/messaging/integration/StubRunnerIntegrationConfiguration.class]: Unsatisfied dependency expressed through method 'stubFlowRegistrar' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'batchStubRunner' defined in class path resource [org/springframework/cloud/contract/stubrunner/spring/StubRunnerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.contract.stubrunner.BatchStubRunner]: Factory method 'batchStubRunner' threw exception; nested exception is java.lang.NullPointerException
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350)
        at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'batchStubRunner' defined in class path resource [org/springframework/cloud/contract/stubrunner/spring/StubRunnerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.contract.stubrunner.BatchStubRunner]: Factory method 'batchStubRunner' threw exception; nested exception is java.lang.NullPointerException
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1134)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1064)
        at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835)
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741)
        ... 47 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.contract.stubrunner.BatchStubRunner]: Factory method 'batchStubRunner' threw exception; nested exception is java.lang.NullPointerException
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
        ... 60 common frames omitted
Caused by: java.lang.NullPointerException: null
        at org.springframework.cloud.contract.stubrunner.AetherFactories.newSession(AetherFactories.java:63)
        at org.springframework.cloud.contract.stubrunner.AetherStubDownloader.<init>(AetherStubDownloader.java:83)
        at org.springframework.cloud.contract.stubrunner.StubDownloaderBuilderProvider.getOrDefaultDownloader(StubDownloaderBuilderProvider.java:48)
        at org.springframework.cloud.contract.stubrunner.spring.StubRunnerConfiguration.batchStubRunner(StubRunnerConfiguration.java:75)
        at org.springframework.cloud.contract.stubrunner.spring.StubRunnerConfiguration$$EnhancerBySpringCGLIB$aa72bb.CGLIB$batchStubRunner[=12=](<generated>)
        at org.springframework.cloud.contract.stubrunner.spring.StubRunnerConfiguration$$EnhancerBySpringCGLIB$aa72bb$$FastClassBySpringCGLIB$176646.invoke(<generated>)
        at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
        at org.springframework.cloud.contract.stubrunner.spring.StubRunnerConfiguration$$EnhancerBySpringCGLIB$aa72bb.batchStubRunner(<generated>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
        ... 61 common frames omitted
2017-07-10 15:26:42.332 ERROR 20476 [] --- [main] o.s.test.context.TestContextManager - Caught exception while allowing TestExecutionListener

Answer 1

问题很可能与 Aether 版本不匹配有关。将版本提升到 Edgware 发行版就足够了，我们已经设法遮蔽了 Aether，最后 Stub Runner 独立于使用的 Aether 版本。

Spring 云合约无法实例化 [org.springframework.cloud.contract.stubrunner.BatchStubRunner]

Spring Cloud Contract Failed to instantiate [org.springframework.cloud.contract.stubrunner.BatchStubRunner]

spring-boot

spring-cloud-contract