先來看一下錯誤,乍一看很容易被嚇到

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Failed to subscribe consumer://192.168.25.1/com.alibaba.dubbo.registry.RegistryService?application=TmsProvider&callbacks=10000&connect.timeout=10000&dubbo=2.6.0&interface=com.alibaba.dubbo.registry.RegistryService&lazy=true&methods=lookup,subscribe,unsubscribe,unregister,register&pid=3020&reconnect=false&sticky=true&subscribe.1.callback=true&timeout=10000&timestamp=1538033258247&unsubscribe.1.callback=false, cause: Failed to invoke the method subscribe in the service com.alibaba.dubbo.registry.RegistryService. Tried 3 times of the providers [0.0.0.0:9090] (1/1) from the registry 0.0.0.0:9090 on the consumer 192.168.25.1 using the dubbo version 2.6.0. Last error is: Failed to invoke remote method: subscribe, provider: dubbo://0.0.0.0:9090/com.alibaba.dubbo.registry.RegistryService?application=TmsProvider&callbacks=10000&check=false&connect.timeout=10000&dubbo=2.6.0&interface=com.alibaba.dubbo.registry.RegistryService&lazy=true&methods=lookup,subscribe,unsubscribe,unregister,register&pid=3020&reconnect=false&remote.timestamp=1538033258247&sticky=true&subscribe.1.callback=true&timeout=10000&timestamp=1538033258247&unsubscribe.1.callback=false, cause: client(url: dubbo://0.0.0.0:9090/com.alibaba.dubbo.registry.RegistryService?application=TmsProvider&callbacks=10000&check=false&codec=dubbo&connect.timeout=10000&dubbo=2.6.0&heartbeat=60000&interface=com.alibaba.dubbo.registry.RegistryService&lazy=true&methods=lookup,subscribe,unsubscribe,unregister,register&pid=3020&reconnect=false&remote.timestamp=1538033258247&send.reconnect=true&sticky=true&subscribe.1.callback=true&timeout=10000&timestamp=1538033258247&unsubscribe.1.callback=false) failed to connect to server /0.0.0.0:9090, error message is:Connection refused: no further information: /192.168.25.1:9090
	at org.springframework.beans
 

裡面出現的最多的就是dubbo這個關鍵字,一時間還是有點懵,找到裡面的關鍵詞Failed to subscribe consumer,有經驗的小夥伴一看就知道是註冊中心的問題,然而我註冊中心一直沒問題,就換了一個地址就報錯了,考驗眼力的時候到啦:

## Dubbo 服務提供者配置
spring:
  profiles: dev
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: 1
    url: jdbc:mysql://1.mysql.rds.aliyuncs.com/lbonline_tms2.0?characterEncoding=utf-8&useSSL=false
  application:
    name: TmsProvider
  dubbo:
    server: true
    registry:
    address: zookeeper://192.168.25.133:2181

    protocol:
      name: dubbo
      port: 20899
    scan: com.lbonline
    provider:
      filter: catTransaction
 

乍一看是不是沒有什麼問題,然而因為我把之前的地址註釋掉了然後回車直接跟registry這個父節點平行了當時沒注意,哎

## Dubbo 服務提供者配置
spring:
  profiles: dev
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: 1
    url: jdbc:mysql://1.mysql.rds.aliyuncs.com/lbonline_tms2.0?characterEncoding=utf-8&useSSL=false
  application:
    name: TmsProvider
  dubbo:
    server: true
    registry:
    address: zookeeper://192.168.25.133:2181

    protocol:
      name: dubbo
      port: 20899
    scan: com.lbonline
    provider:
      filter: catTransaction
 

稍不注意就出錯了