Open FaignClient与Netflix Ribbon的集成在springboot中不起作用

Question

@RestController
public class FeinApiCall {
    
    @Autowired
    CustomFeignClient customFeignClient;


    @GetMapping("/getinfothroughfeign")
    public String getFeignLoad() {
        String result =customFeignClient.getInstance();
        return result;
    }
}



@SpringBootApplication
@EnableFeignClients
@RibbonClient(name = "testServer", configuration = CustomIClientfiguration.class)
public class FeignLoadBalancingApplication {

    public static void main(String[] args) {
        SpringApplication.run(FeignLoadBalancingApplication.class, args);
    }

     
}



@FeignClient(name ="testServer")
public interface CustomFeignClient {
     @RequestMapping(method = RequestMethod.GET, value = "/getPort")
     String getInstance();
}


@Configuration
public class CustomIClientfiguration {

    public static final int DEFAULT_CONNECT_TIMEOUT = 1000;
    public static final int DEFAULT_READ_TIMEOUT = 1000;
    
    @Autowired
    IClientConfig ribbonClientConfig;
    
    @Bean
    public IClientConfig ribbonClientConfig() {
        System.err.println("CustomIClientfiguration overiding");
        DefaultClientConfigImpl config = new DefaultClientConfigImpl();
        config.loadProperties("testServer");
        config.set(CommonClientConfigKey.ConnectTimeout, DEFAULT_CONNECT_TIMEOUT);
        config.html" target="_blank">html" target="_blank">set(CommonClientConfigKey.ReadTimeout, DEFAULT_READ_TIMEOUT);
        return config;
    }
    
    @Bean
    public IPing ribbonPing(IClientConfig config) {
        return new PingUrl();
    }
    
    @Bean
    public IRule ribbonRule(IClientConfig config) {
        
        return new AvailabilityFilteringRule();
    }
}

server.port=9098

testServer.ribbon.eureka.enabled=true
testServer.ribbon.listOfServers=localhost:2289
testServer.ribbon.ServerListRefreshInterval=15000

@RestController
public class TestController {

    @Autowired
    ApplicationContext context;
    
    @Value("${server.port}")
    private String portNumber;
    
    @GetMapping("/getPort")
    public String getString()
    {
        return "Port number "+this.portNumber;
    }
    
    @GetMapping("/")
    public String ping()
    {
        
        return "welcome";
    }
}

server.port=2289
spring.application.name=testServer
management.endpoints.web.exposure.include=*
management.endpoint.health.enabled=true

接收方类别组织。springframework。云netflix。带子RibbonLoadBalancerClient未定义或继承已解析方法“抽象组织”的实现。springframework。云客户ServiceInstance选择接口org的（java.lang.String、org.springframework.cloud.client.loadbalancer.Request）。springframework。云客户负载平衡器。ServiceInstanceChooser。Java语言lang.AbstractMethodError：接收方类org。springframework。云netflix。带子RibbonLoadBalancerClient未定义或继承已解析方法“抽象组织”的实现。springframework。云客户ServiceInstance选择接口org的（java.lang.String、org.springframework.cloud.client.loadbalancer.Request）。springframework。云客户负载平衡器。ServiceInstanceChooser。位于组织。springframework。云openfeign。负载平衡器。假装BlockingLoadBalancerClient。在外文执行（FeignBlockingLoadBalancerClient.java:88）。SynchronousMethodHandler。executeAndDecode（SynchronousMethodHandler.java:119）位于外文。SynchronousMethodHandler。调用（SynchronousMethodHandler.java:89）。ReflectiveFeign$FeignInvocationHandler。在jdk调用（ReflectiveFeign.java:100）。代理3/jdk。proxy3.$Proxy83。com上的getInstance（未知源）。假装负载平衡。应用程序编程接口。费纳皮卡尔。java上的getFeignLoad（FeinApiCall.java:19）。基本/jdk。内部的反映NativeMethodAccessorImpl。在java上调用0（本机方法）。基本/jdk。内部的反映NativeMethodAccessorImpl。在java上调用（NativeMethodAccessorImpl.java:78）。基本/jdk。内部的反映DelegatingMethodAccessorImpl。在java上调用（DelegatingMethodAccessorImpl.java:43）。基本/java。lang.reflect。方法在org调用（方法java:567）。springframework。网状物方法支持InvocableHandlerMethod。doInvoke（InvocableHandlerMethod.java:197）位于org。springframework。网状物方法支持InvocableHandlerMethod。org上的invokeForRequest（InvocableHandlerMethod.java:141）。springframework。网状物servlet。mvc。方法注释。ServletInvocableHandlerMethod。org上的invokeAndHandle（ServletInvocableHandlerMethod.java:106）。springframework。网状物servlet。mvc。方法注释。RequestMappingHandlerAdapter。org上的invokeHandlerMethod（RequestMappingHandlerAdapter.java:895）。springframework。网状物servlet。mvc。方法注释。RequestMappingHandlerAdapter。位于org的handleInternal（RequestMappingHandlerAdapter.java:808）。springframework。网状物servlet。mvc。方法AbstractHandlerMethodAdapter。handle（AbstractHandlerMethodAdapter.java:87）位于org。springframework。网状物servlet。DispatcherServlet。doDispatch（DispatcherServlet.java:1064）位于org。springframework。网状物servlet。DispatcherServlet。位于org的doService（DispatcherServlet.java:963）。springframework。网状物servlet。FrameworkServlet。processRequest（FrameworkServlet.java:1006）

Answer 1

我也遇到了同样的问题，我正在起诉Sprigboot和Aprinb云版本。我已经实施了塔伦·辛格（TarunSingh）提出的上述解决方案，它对我起到了作用。springBootVersion='2.4.13'springCloudVersion='2020.0.3'

Answer 2

1. 已创建新配置文件

@Configuration
public class OpenFeignConfiguration {
    
    @Autowired
    RibbonLoadBalancerClient ribbonLoadBalancerClient;
    
    @Bean
    public Feign.Builder feignBuilder() {
        return Feign.builder();
    }
}

@FeignClient(name ="testServer",configuration = OpenFeignConfiguration.class)
public interface CustomFeignClient {
     @RequestMapping(method = RequestMethod.GET, value = "/getPort")
     String getInstance();
}

@Component
public class ChildRibbonLoadBalancerClient extends RibbonLoadBalancerClient{

    @Autowired
    LoadBalancerClient loadBalancerClient;
    
    @Override
    public <T> ServiceInstance choose(String serviceId, Request<T> request) {
         ServiceInstance server = this.loadBalancerClient.choose(serviceId);
         return server;
    }

    public ChildRibbonLoadBalancerClient(SpringClientFactory clientFactory) {
        super(clientFactory);
    }

}