cannot find DiscoveryClient bean error in spring boot
2017-03-16 16:09:08.821 INFO 9104 --- [ main] com.hello.EurekaClientApplication : No active profile set, falling back to default profiles: default
2017-03-16 16:09:08.848 INFO 9104 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@5dcd8c7a: startup date [Thu Mar 16 16:09:08 CDT 2017]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@441772e
2017-03-16 16:09:09.873 INFO 9104 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'hystrixFeature' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.cloud.netflix.hystrix.HystrixCircuitBreakerConfiguration$HystrixWebConfiguration; factoryMethodName=hystrixFeature; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/cloud/netflix/hystrix/HystrixCircuitBreakerConfiguration$HystrixWebConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.cloud.netflix.hystrix.HystrixCircuitBreakerConfiguration; factoryMethodName=hystrixFeature; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/cloud/netflix/hystrix/HystrixCircuitBreakerConfiguration.class]]
2017-03-16 16:09:10.364 WARN 9104 --- [ main] o.s.c.a.ConfigurationClassPostProcessor : Cannot enhance @Configuration bean definition 'refreshScope' since its singleton instance has been created too early. The typical cause is a non-static @Bean method with a BeanDefinitionRegistryPostProcessor return type: Consider declaring such methods as 'static'.
2017-03-16 16:09:10.701 INFO 9104 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=d0eb8cfd-bd5b-3565-9f63-f671e896f6be
2017-03-16 16:09:10.736 INFO 9104 --- [ main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2017-03-16 16:09:11.312 INFO 9104 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$94394ff6] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-03-16 16:09:12.091 INFO 9104 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-03-16 16:09:12.128 INFO 9104 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2017-03-16 16:09:12.130 INFO 9104 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11
2017-03-16 16:09:12.546 INFO 9104 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-03-16 16:09:12.547 INFO 9104 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 3699 ms
2017-03-16 16:09:13.191 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'proxyStreamServlet' to [/proxy.stream]
2017-03-16 16:09:13.193 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-03-16 16:09:13.198 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'metricsFilter' to: [/*]
2017-03-16 16:09:13.199 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-03-16 16:09:13.199 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-03-16 16:09:13.200 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-03-16 16:09:13.200 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-03-16 16:09:13.200 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'webRequestLoggingFilter' to: [/*]
2017-03-16 16:09:13.200 INFO 9104 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'applicationContextIdFilter' to: [/*]
2017-03-16 16:09:13.269 WARN 9104 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'eurekaClientApplication': Unsatisfied dependency expressed through field 'clientservice'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'clientService' defined in file [C:\Users\Mike\workspace\Eureka_client\target\classes\com\hello\ClientService.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.netflix.discovery.DiscoveryClient' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2017-03-16 16:09:13.306 INFO 9104 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
2017-03-16 16:09:13.404 INFO 9104 --- [ main] utoConfigurationReportLoggingInitializer :
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-03-16 16:09:13.745 ERROR 9104 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of constructor in com.hello.ClientService required a bean of type 'com.netflix.discovery.DiscoveryClient' that could not be found.
Action:
Consider defining a bean of type 'com.netflix.discovery.DiscoveryClient' in your configuration.
package com.hello;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.stereotype.Service;
import com.netflix.discovery.DiscoveryClient;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
@EnableDiscoveryClient
@Service
public class ClientService {
private final DiscoveryClient disc;
public ClientService(DiscoveryClient disc){
this.disc=disc;
}
@HystrixCommand(fallbackMethod="disp")
public String serviceInstancesByApplicationName(){
return this.disc.getInstancesById("a-bootiful-client").toString();
}
public String disp(){
return "This is fall back method";
}
}
package com.hello;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
@EnableHystrix
@EnableHystrixDashboard
@EnableDiscoveryClient
@SpringBootConfiguration
@EnableAutoConfiguration
@ComponentScan
@RestController
public class EurekaClientApplication {
@Autowired
private ClientService clientservice;
public static void main(String[] args) {
SpringApplication.run(EurekaClientApplication.class, args);
}
@RequestMapping("/serv")
public String serviceInstancesByApplicationName(){
return clientservice.serviceInstancesByApplicationName();
}
}
i am trying to create a simple eureka service and client program and enable hystrix on that. but i am getting this error on the code
Answer
You imported wrong DiscoveryClient class in your code. DiscoveryClient from netflix is not provided as Spring Bean. So you should use one from spring-cloud.
Try to import org.springframework.cloud.client.discovery.DiscoveryClient instead of com.netflix.discovery.DiscoveryClient in your ClientService class.
Also you need to change this.disc.getInstancesById("a-bootiful-client") to this.disc.getInstances(...).