org.elasticsearch.ElasticsearchException: java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused
ElasticsearchException[java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused]; nested: ExecutionException[java.net.ConnectException: Connection refused]; nested: ConnectException[Connection refused];
	at org.elasticsearch.client.RestHighLevelClient.performClientRequest(RestHighLevelClient.java:2695)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:2171)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:2137)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:2105)
	at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1367)
	at com.shishuo.center.service.ElasticService.search(ElasticService.java:127)
	at com.shishuo.center.service.HelpService.getHelpPageForSearch(HelpService.java:90)
	at com.shishuo.center.service.HelpService$$FastClassBySpringCGLIB$$896e613a.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
	at com.shishuo.center.service.HelpService$$EnhancerBySpringCGLIB$$70385d24.getHelpPageForSearch(<generated>)
	at com.shishuo.center.service.rpc.DubboHelpServiceImpl.getHelpPageForSearch(DubboHelpServiceImpl.java:47)
	at org.apache.dubbo.common.bytecode.Wrapper11.invokeMethod(Wrapper11.java)
	at org.apache.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47)
	at org.apache.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:84)
	at org.apache.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:56)
	at org.apache.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
	at org.apache.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:77)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:46)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:91)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:52)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:192)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:41)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:129)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:148)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:100)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:175)
	at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
	at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:57)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.apache.dubbo.common.threadlocal.InternalRunnable.run(InternalRunnable.java:41)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused
	at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.getValue(BaseFuture.java:257)
	at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.get(BaseFuture.java:244)
	at org.elasticsearch.common.util.concurrent.BaseFuture.get(BaseFuture.java:75)
	at org.elasticsearch.client.RestHighLevelClient.performClientRequest(RestHighLevelClient.java:2692)
	... 41 more
Caused by: java.net.ConnectException: Connection refused
	at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:779)
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvent(DefaultConnectingIOReactor.java:174)
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:148)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:351)
	at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221)
	at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64)
	... 1 more

org.elasticsearch.ElasticsearchException: java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused
ElasticsearchException[java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused]; nested: ExecutionException[java.net.ConnectException: Connection refused]; nested: ConnectException[Connection refused];
	at org.elasticsearch.client.RestHighLevelClient.performClientRequest(RestHighLevelClient.java:2695)
	at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:2171)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:2137)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:2105)
	at org.elasticsearch.client.RestHighLevelClient.search(RestHighLevelClient.java:1367)
	at com.shishuo.center.service.ElasticService.search(ElasticService.java:127)
	at com.shishuo.center.service.HelpService.getHelpPageForSearch(HelpService.java:90)
	at com.shishuo.center.service.HelpService$$FastClassBySpringCGLIB$$896e613a.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
	at com.shishuo.center.service.HelpService$$EnhancerBySpringCGLIB$$70385d24.getHelpPageForSearch(<generated>)
	at com.shishuo.center.service.rpc.DubboHelpServiceImpl.getHelpPageForSearch(DubboHelpServiceImpl.java:47)
	at org.apache.dubbo.common.bytecode.Wrapper11.invokeMethod(Wrapper11.java)
	at org.apache.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47)
	at org.apache.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:84)
	at org.apache.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:56)
	at org.apache.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
	at org.apache.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:77)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:46)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:91)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:52)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:192)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:41)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:129)
	at org.apache.dubbo.rpc.protocol.FilterNode.invoke(FilterNode.java:61)
	at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:148)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:100)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:175)
	at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
	at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:57)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at org.apache.dubbo.common.threadlocal.InternalRunnable.run(InternalRunnable.java:41)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused
	at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.getValue(BaseFuture.java:257)
	at org.elasticsearch.common.util.concurrent.BaseFuture$Sync.get(BaseFuture.java:244)
	at org.elasticsearch.common.util.concurrent.BaseFuture.get(BaseFuture.java:75)
	at org.elasticsearch.client.RestHighLevelClient.performClientRequest(RestHighLevelClient.java:2692)
	... 41 more
Caused by: java.net.ConnectException: Connection refused
	at java.base/sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:779)
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvent(DefaultConnectingIOReactor.java:174)
	at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:148)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:351)
	at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:221)
	at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64)
	... 1 more