我使用 zookeeper 作为服务寄存器，这就是我的问题：当我直接将它作为 spring boot 应用程序运行时，它会成功，而不是当我使用 junit 对其进行测试时，它会失败。
pom依赖如下：
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!--<dependency>-->
<!--<groupId>org.springframework.cloud</groupId>-->
<!--<artifactId>spring-cloud-starter-hystrix</artifactId>-->
<!--</dependency>-->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.4</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
Feign代码如下：
@Configuration
public class BeanConfig {
@Bean
@LoadBalanced
RestTemplate restTemplate() {
return new RestTemplate();
}
}
@FeignClient(value = "walletbackstage")
public interface IWalletBackstageClient {
@RequestMapping(value = "/walletRate/getWalletRateByType/{type}", method = RequestMethod.GET)
ResponseResult getWalletRateType(@PathVariable(name = "type") Integer type);
}
运行代码如下：
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
junit代码如下：
@RunWith(SpringRunner.class)
@SpringBootTest
public class TestClientTest {
@Autowired
IWalletBackstageClient walletBackstageClient;
@Test
public void testFegin() {
Object walletRateType = walletBackstageClient.getWalletRateType(1);
System.out.println(walletRateType);
}
}
例外情况如下：
2017-07-13 11:39:55.182 WARN 9976 --- [lletbackstage-1] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dependenciesBasedLoadBalancer' defined in org.springframework.cloud.zookeeper.discovery.ZookeeperRibbonClientConfiguration: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.netflix.loadbalancer.ILoadBalancer]: Factory method 'dependenciesBasedLoadBalancer' threw exception; nested exception is java.lang.NullPointerException
com.netflix.hystrix.exception.HystrixRuntimeException: IWalletBackstageClient#getWalletRateType(Integer) failed and no fallback available.
at com.netflix.hystrix.AbstractCommand$22.call(AbstractCommand.java:805)
at com.netflix.hystrix.AbstractCommand$22.call(AbstractCommand.java:790)
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java:140)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at com.netflix.hystrix.AbstractCommand$DeprecatedOnFallbackHookApplication$1.onError(AbstractCommand.java:1470)
at com.netflix.hystrix.AbstractCommand$FallbackHookApplication$1.onError(AbstractCommand.java:1395)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:44)
at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:28)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$4.onError(OperatorOnErrorResumeNextViaFunction.java:142)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$3.onError(AbstractCommand.java:1173)
at rx.internal.operators.OperatorSubscribeOn$1$1.onError(OperatorSubscribeOn.java:59)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.internal.operators.OnSubscribeDoOnEach$DoOnEachSubscriber.onError(OnSubscribeDoOnEach.java:87)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at com.netflix.hystrix.AbstractCommand$DeprecatedOnRunHookApplication$1.onError(AbstractCommand.java:1429)
at com.netflix.hystrix.AbstractCommand$ExecutionHookApplication$1.onError(AbstractCommand.java:1360)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.observers.Subscribers$5.onError(Subscribers.java:230)
at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:44)
at rx.internal.operators.OnSubscribeThrow.call(OnSubscribeThrow.java:28)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10211)
at rx.internal.operators.OperatorSubscribeOn$1.call(OperatorSubscribeOn.java:94)
at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:56)
at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction$1.call(HystrixContexSchedulerAction.java:47)
at com.netflix.hystrix.strategy.concurrency.HystrixContexSchedulerAction.call(HystrixContexSchedulerAction.java:69)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dependenciesBasedLoadBalancer' defined in org.springframework.cloud.zookeeper.discovery.ZookeeperRibbonClientConfiguration: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.netflix.loadbalancer.ILoadBalancer]: Factory method 'dependenciesBasedLoadBalancer' 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:1128)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1023)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:751)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
at org.springframework.cloud.context.named.NamedContextFactory.createContext(NamedContextFactory.java:110)
at org.springframework.cloud.context.named.NamedContextFactory.getContext(NamedContextFactory.java:79)
at org.springframework.cloud.context.named.NamedContextFactory.getInstance(NamedContextFactory.java:115)
at org.springframework.cloud.netflix.ribbon.SpringClientFactory.getInstance(SpringClientFactory.java:111)
at org.springframework.cloud.netflix.ribbon.SpringClientFactory.getClientConfig(SpringClientFactory.java:65)
at org.springframework.cloud.netflix.feign.ribbon.LoadBalancerFeignClient.getClientConfig(LoadBalancerFeignClient.java:78)
at org.springframework.cloud.netflix.feign.ribbon.LoadBalancerFeignClient.execute(LoadBalancerFeignClient.java:62)
at org.springframework.cloud.zookeeper.discovery.dependency.DependencyFeignClientAutoConfiguration$1.execute(DependencyFeignClientAutoConfiguration.java:81)
at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:97)
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76)
at feign.hystrix.HystrixInvocationHandler$1.run(HystrixInvocationHandler.java:108)
at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:299)
at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:295)
at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46)
... 26 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.netflix.loadbalancer.ILoadBalancer]: Factory method 'dependenciesBasedLoadBalancer' 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)
... 51 more
Caused by: java.lang.NullPointerException
at org.springframework.cloud.zookeeper.discovery.ZookeeperServerList.getServers(ZookeeperServerList.java:80)
at org.springframework.cloud.zookeeper.discovery.ZookeeperServerList.getInitialListOfServers(ZookeeperServerList.java:68)
at org.springframework.cloud.zookeeper.discovery.dependency.DependenciesBasedLoadBalancer.<init>(DependenciesBasedLoadBalancer.java:52)
at org.springframework.cloud.zookeeper.discovery.ZookeeperRibbonClientConfiguration.dependenciesBasedLoadBalancer(ZookeeperRibbonClientConfiguration.java:88)
at org.springframework.cloud.zookeeper.discovery.ZookeeperRibbonClientConfiguration$$EnhancerBySpringCGLIB$$9f4ce39c.CGLIB$dependenciesBasedLoadBalancer$6(<generated>)
at org.springframework.cloud.zookeeper.discovery.ZookeeperRibbonClientConfiguration$$EnhancerBySpringCGLIB$$9f4ce39c$$FastClassBySpringCGLIB$$329718a4.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.zookeeper.discovery.ZookeeperRibbonClientConfiguration$$EnhancerBySpringCGLIB$$9f4ce39c.dependenciesBasedLoadBalancer(<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:498)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 52 more
2017-07-13 11:39:55.224 INFO 9976 --- [ Thread-5] c.n.l.PollingServerListUpdater : Shutting down the Executor Pool for PollingServerListUpdater
2017-07-13 11:39:55.226 INFO 9976 --- [ Thread-4] o.s.w.c.s.GenericWebApplicationContext : Closing org.springframework.web.context.support.GenericWebApplicationContext@769d513: startup date [Thu Jul 13 11:39:48 CST 2017]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@62e70ea3
2017-07-13 11:39:55.229 INFO 9976 --- [ Thread-4] o.s.c.support.DefaultLifecycleProcessor : Stopping beans in phase 0
2017-07-13 11:39:55.236 INFO 9976 --- [tor-Framework-0] o.a.c.f.imps.CuratorFrameworkImpl : backgroundOperationsLoop exiting
2017-07-13 11:39:55.253 INFO 9976 --- [ Thread-4] org.apache.zookeeper.ZooKeeper : Session: 0x15caffd3955c4d0 closed
2017-07-13 11:39:55.253 INFO 9976 --- [ain-EventThread] org.apache.zookeeper.ClientCnxn : EventThread shut down
2017-07-13 11:39:55.254 INFO 9976 --- [ Thread-4] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@3f36e8d1: startup date [Thu Jul 13 11:39:50 CST 2017]; parent: org.springframework.web.context.support.GenericWebApplicationContext@769d513
Disconnected from the target VM, address: '127.0.0.1:63579', transport: 'socket'
Process finished with exit code -1