老师您好，启动consumer的时候报错了，帮看一下

来源：2-5 SpringBoot直连提供者演示

慕容9054781

2020-08-06

Caused by: com.alibaba.dubbo.remoting.RemotingException: client(url: dubbo://127.0.0.1:20881/com.imooc.Service?application=dubbo-spring-boot-consumer&codec=dubbo&dubbo=2.6.0&heartbeat=60000&interface=com.imooc.Service&methods=sendMessage&pid=14568&register.ip=169.254.218.150&side=consumer&timestamp=1596666669292) failed to connect to server /127.0.0.1:20881, error message is:connection timed out
at com.alibaba.dubbo.remoting.transport.netty.NettyClient.doConnect(NettyClient.java:122) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.transport.AbstractClient.connect(AbstractClient.java:266) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.transport.AbstractClient.(AbstractClient.java:89) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.transport.netty.NettyClient.(NettyClient.java:59) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.transport.netty.NettyTransporter.connect(NettyTransporter.java:35) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.Transporter $A d a p t i v e . c o n n e c t (T r a n s p o r t e r$ Adaptive.java) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.Transporters.connect(Transporters.java:75) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchanger.connect(HeaderExchanger.java:38) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.remoting.exchange.Exchangers.connect(Exchangers.java:109) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.initClient(DubboProtocol.java:401) ~[dubbo-2.6.0.jar:2.6.0]
… 29 common frames omitted
Caused by: java.net.ConnectException: connection timed out
at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink $B o s s . p r o c e s s C o n n e c t T i m e o u t (N i o C l i e n t S o c k e t P i p e l i n e S i n k . j a v a : 371) [n e t t y - 3.2.5 . F i n a l . j a r : n a] a t o r g . j b o s s . n e t t y . c h a n n e l . s o c k e t . n i o . N i o C l i e n t S o c k e t P i p e l i n e S i n k$ Boss.run(NioClientSocketPipelineSink.java:283) ~[netty-3.2.5.Final.jar:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_152]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_152]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_152]