如何解决 Spring-cloud-sleuth-zipkin (Edgware.SR5) 中的 RabbitMQ 服务器连接错误答案

【问题标题】：How to resolve RabbitMQ Server connection error in Spring-cloud-sleuth-zipkin (Edgware.SR5)如何解决 Spring-cloud-sleuth-zipkin (Edgware.SR5) 中的 RabbitMQ 服务器连接错误
【发布时间】：2019-04-12 00:17:38
【问题描述】：

我需要通过 RabbitMQ 将 span 发送到 Zipkin。我正在使用 Spring-Cloud-Sleuth Edgware-SR5 版本和 SpringBoot 1.5.3.RELEASE 版本。使用较旧的 Spring-cloud sleuth 版本（spring-cloud-stream-binder-rabbit - v1.1.4.RELEASE）它工作正常。

当我尝试启动服务时，我得到“”AsyncReporter{RabbitMQSender{addresses=[localhost:5672], queue=zipkin}}。无法建立到 RabbitMQ 服务器的连接”错误。 我浏览了文档，但无法解决此问题。

Gradle 配置：

dependencyManagement {
    imports {
        mavenBom "org.springframework.cloud:spring-cloud-dependencies:Edgware.SR5"
    }
}

compile 'org.springframework.cloud:spring-cloud-starter-sleuth'
compile 'org.springframework.cloud:spring-cloud-starter-zipkin'
compile 'org.springframework.boot:spring-boot-starter-amqp'
compile 'org.springframework.amqp:spring-rabbit'

Application.yml：

spring:
  sleuth:
    enabled: true
    async:
      enabled: true
  sampler:
    percentage: 1.0 
  zipkin:
    baseUrl: 
    sender:
      type: rabbit

异常堆栈跟踪：

Exception in thread "AsyncReporter{RabbitMQSender{addresses=[localhost:5672], queue=zipkin}}" java.lang.IllegalStateException: Unable to establish connection to RabbitMQ server
    at zipkin2.reporter.amqp.RabbitMQSender.get(RabbitMQSender.java:190)
    at zipkin2.reporter.amqp.AutoValue_RabbitMQSender.get(AutoValue_RabbitMQSender.java:27)
    at zipkin2.reporter.amqp.RabbitMQSender$1.initialValue(RabbitMQSender.java:211)
    at zipkin2.reporter.amqp.RabbitMQSender$1.initialValue(RabbitMQSender.java:208)
    at java.lang.ThreadLocal.setInitialValue(Unknown Source)
    at java.lang.ThreadLocal.get(Unknown Source)
    at zipkin2.reporter.amqp.RabbitMQSender$RabbitMQCall.publish(RabbitMQSender.java:231)
    at zipkin2.reporter.amqp.RabbitMQSender$RabbitMQCall.doExecute(RabbitMQSender.java:226)
    at zipkin2.reporter.amqp.RabbitMQSender$RabbitMQCall.doExecute(RabbitMQSender.java:218)
    at zipkin2.Call$Base.execute(Call.java:379)
    at zipkin2.reporter.AsyncReporter$BoundedAsyncReporter.flush(AsyncReporter.java:272)
    at zipkin2.reporter.AsyncReporter$Builder$1.run(AsyncReporter.java:179)
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at com.rabbitmq.client.impl.SocketFrameHandlerFactory.create(SocketFrameHandlerFactory.java:50)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:907)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:859)
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:736)
    at zipkin2.reporter.amqp.RabbitMQSender.get(RabbitMQSender.java:188)

感谢和问候苏雷什

【问题讨论】：

标签： spring-rabbit spring-cloud-sleuth

【解决方案1】：

Connection refused: connect

仅表示 RabbitMQ 未在 localhost:5672 上运行（如果您未在 application.yml 中为其提供主机/端口或地址，这是默认设置）。

【讨论】：