org.springframework.web.client.ResourceAccessException: I/O error on POST request for “http://localhost:9411/api/v2/spans”: connect timed out; nested exception is java.net.SocketTimeoutException: connect timed out
报错信息如下
代码语言：javascript复制org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://localhost:9411/api/v2/spans": connect timed out; nested exception is java.net.SocketTimeoutException: connect timed out
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:751) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.cloud.sleuth.zipkin2.sender.ZipkinRestTemplateWrapper.doExecute(ZipkinRestTemplateSenderConfiguration.java:228) ~[spring-cloud-sleuth-zipkin-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:644) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.cloud.sleuth.zipkin2.sender.RestTemplateSender.post(RestTemplateSender.java:129) ~[spring-cloud-sleuth-zipkin-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.cloud.sleuth.zipkin2.sender.RestTemplateSender$HttpPostCall.doExecute(RestTemplateSender.java:142) ~[spring-cloud-sleuth-zipkin-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.cloud.sleuth.zipkin2.sender.RestTemplateSender$HttpPostCall.doExecute(RestTemplateSender.java:132) ~[spring-cloud-sleuth-zipkin-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at zipkin2.Call$Base.execute(Call.java:380) ~[zipkin-2.19.0.jar:na]
at zipkin2.reporter.AsyncReporter$BoundedAsyncReporter.flush(AsyncReporter.java:285) ~[zipkin-reporter-2.11.0.jar:na]
at zipkin2.reporter.AsyncReporter$Flusher.run(AsyncReporter.java:354) [zipkin-reporter-2.11.0.jar:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_131]
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_131]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_131]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_131]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_131]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_131]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_131]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_131]
at sun.net.NetworkClient.doConnect(NetworkClient.java:175) ~[na:1.8.0_131]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) ~[na:1.8.0_131]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) ~[na:1.8.0_131]
at sun.net.www.http.HttpClient.<init>(HttpClient.java:242) ~[na:1.8.0_131]
at sun.net.www.http.HttpClient.New(HttpClient.java:339) ~[na:1.8.0_131]
at sun.net.www.http.HttpClient.New(HttpClient.java:357) ~[na:1.8.0_131]
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1202) ~[na:1.8.0_131]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1138) ~[na:1.8.0_131]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1032) ~[na:1.8.0_131]
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:966) ~[na:1.8.0_131]
at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:76) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:742) ~[spring-web-5.2.2.RELEASE.jar:5.2.2.RELEASE]
... 9 common frames omitted
原因是导入了 zipkin 的依赖却没有配置端口等信息。
<!-- 包含了sleuth zipkin 数据链路追踪-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zipkin</artifactId>
</dependency>
