Spring boot 在spring引导中找不到DiscoveryClient bean错误

Spring boot 在spring引导中找不到DiscoveryClient bean错误,spring-boot,netflix-eureka,Spring Boot,Netflix Eureka,我正在尝试创建一个简单的eureka服务和客户端程序,并在此基础上启用hystrix。但是我在代码中遇到了这个错误,您在代码中导入了错误的DiscoveryClient类。netflix的DiscoveryClient不是作为SpringBean提供的。所以你应该使用SpringCloud中的一个 尝试在ClientService类中导入org.springframework.cloud.client.DiscoveryClient而不是com.netflix.DiscoveryClient 您

我正在尝试创建一个简单的eureka服务和客户端程序,并在此基础上启用hystrix。但是我在代码中遇到了这个错误,您在代码中导入了错误的DiscoveryClient类。netflix的DiscoveryClient不是作为SpringBean提供的。所以你应该使用SpringCloud中的一个

尝试在
ClientService
类中导入
org.springframework.cloud.client.DiscoveryClient
而不是
com.netflix.DiscoveryClient


您还需要将
this.disc.getInstancesById(“a-bootiful-client”)
更改为
this.disc.getInstances(…)

使用
com.netflix.discovery.EurekaClient
而不是
com.netflix.DiscoveryClient
。这是Netflix提供的发现客户端


如果您想使用spring discovery client,那么请使用@yongsung.yoon建议的
org.springframework.cloud.client.DiscoveryClient
,我也遇到过同样的问题,我在添加spring boot starter web依赖项后解决了它,因此它不是调试服务。请添加文本,解释您试图做什么来调查您的问题。解释代码的哪一部分似乎按照您想要的方式工作,而哪一部分没有。在您这边演示一些工作,否则看起来您只是转储了一条很大的错误消息,并期望人们为您调试代码。 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();
    }
}