environment
<spring-boot.version>2.5.3</spring-boot.version>
<spring-cloud.version>2020.0.3</spring-cloud.version>
<spring-cloud-alibaba.version>2021.1</spring-cloud-alibaba.version>
report errors
Errors are reported during project startup, as follows:
2021-12-22 16:55:56.766 WARN 21922 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'oauth-client.FeignClientSpecification' defined in null: Cannot register bean definition [Generic bean: class [org.springframework.cloud.openfeign.FeignClientSpecification]; scope=; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null] for bean 'oauth-client.FeignClientSpecification': There is already [Generic bean: class [org.springframework.cloud.openfeign.FeignClientSpecification]; scope=; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null] bound.
2021-12-22 16:55:56.776 INFO 21922 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-12-22 16:55:56.799 ERROR 21922 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
The bean 'xxx-client.FeignClientSpecification' could not be registered. A bean with that name has already been defined and overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
reason
Multiple interfaces in a project use @ feignclient to call the same service, which means that a service can only be used once with @ feignclient.
Solution:
1) Distinguish with ContextID
But I don’t know why it didn’t work
@FeignClient(value = “xxx-server”, contextId = “oauth-client”)
public interface OAuthClientFeignClient {
@GetMapping("/api/v1/oauth-clients/{clientId}")
Result<SysOauthClient> getOAuthClientById(@PathVariable String clientId);
}
2) Add the following code to the application.properties file.
#Allow the existence of multiple Feign calls to the same Service interface
spring.main.allow-bean-definition-overriding=true
3) Add the following code to the application.yml file.
spring:
main:
#Allow the existence of multiple Feign calls to the same Service interface
allow-bean-definition-overriding: true
The above code enables multiple interfaces to call the same service using @FeignClient.
