錯誤資訊

log4j:WARN No appenders could be found for logger (com.alibaba.dubbo.common.logger.LoggerFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" com.alibaba.dubbo.rpc.RpcException: Failed to invoke the method searchRefundStatus in the service

com.dinpay.refund.bank.IBankService. Tried 3 times of the providers [192.168.1.20:20880] (1/1) from the registry 224.224.224.224:1234 on the consumer 192.168.1.20 using the dubbo version 2.4.5. Last error is: Failed to invoke remote method: searchRefundStatus, provider: dubbo://192.168.1.20:20880

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Caused by: com.alibaba.dubbo.remoting.RemotingException: message can not send, because channel is closed . url:dubbo://192.168.23.1:21954/com.tw.ei.business.agent.service.ReqBuinessAgentService?anyhost=true&application=consumer-engine&check=false&codec=dubbo&default.timeout=120000&dubbo=2.4.10&heartbeat=60000&interface=com.tw.ei.business.agent.service.ReqBuinessAgentService&methods=execute&pid=27587&retries=0&revision=reqappservice&side=consumer&timestamp=1399973540550&version=1.0.0
at com.alibaba.dubbo.remoting.transport.AbstractClient.send(AbstractClient.java:268)
at com.alibaba.dubbo.remoting.transport.AbstractPeer.send(AbstractPeer.java:51)
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeChannel.request(HeaderExchangeChannel.java:112)
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeClient.request(HeaderExchangeClient.java:91)

錯誤資訊一堆，折騰了好半天，最後發現是我要掉的那臺機器使用了qq管家的wifi精靈，使他的機器的ip發生改變，其實他的ip不是192.168.23.1，後來把wifi精靈關閉，就可以正常呼叫。

VMware虛擬機器安裝之後會多出幾個虛擬網絡卡，如果不禁用也會有差不多的問題。