java.lang.IllegalStateException: No such extension 
org.apache.dubbo.rpc.Protocol by name dubbo
at 
org.apache.dubbo.common.extension.ExtensionLoader.findException(ExtensionLoader.java:516)
 ~[dubbo-common-2.7.1.jar:2.7.1]
at 
org.apache.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:523)
 ~[dubbo-common-2.7.1.jar:2.7.1]
at 
org.apache.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:347)
 ~[dubbo-common-2.7.1.jar:2.7.1]
at 
org.apache.dubbo.config.ServiceConfig.findConfigedPorts(ServiceConfig.java:696) 
~[dubbo-config-api-2.7.1.jar:2.7.1]
at 
org.apache.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:517)
 ~[dubbo-config-api-2.7.1.jar:2.7.1]
at org.apache.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:417) 
~[dubbo-config-api-2.7.1.jar:2.7.1]
at org.apache.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:375) 
~[dubbo-config-api-2.7.1.jar:2.7.1]
at org.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:337) 
~[dubbo-config-api-2.7.1.jar:2.7.1]
at org.apache.dubbo.config.spring.ServiceBean.export(ServiceBean.java:319) 
~[dubbo-config-spring-2.7.1.jar:2.7.1]
at 
org.apache.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:113)
 ~[dubbo-config-spring-2.7.1.jar:2.7.1]
at 
org.apache.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:59)
 ~[dubbo-config-spring-2.7.1.jar:2.7.1]
at 
org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:402)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:359)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:896)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
 ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at 
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742) 
~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at 
org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389)
 ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311) 
~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at 
org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:139)
 [spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at com.fahuo123.fh.FhApplication.main(FhApplication.java:24) [classes/:na]
2019-07-10 23:10:49.406 INFO 4716 --- [ main] 
.b.c.e.AwaitingNonWebApplicationListener : [Dubbo] Current Spring Boot 
Application is about to shutdown...
2019-07-10 23:10:49.415 INFO 4716 --- [ main] 
f.a.ReferenceAnnotationBeanPostProcessor : class 
org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor
 was destroying!
Process finished with exit code 1

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