org.springframework.web.client.ResourceAccessException: I/O error on POST request for ************

org.springframework.web.client.ResourceAccessException: I/O error on POST request for “http://localhost:9411/api/v2/spans”:

原因：pom依赖中含有 zipkin 依赖，没有配置 zipkin-server, 默认提交9411

解决办法：将这个依赖删除

    <dependency
       <groupId>org.springframework.cloud</groupId>-->
       <artifactId>spring-cloud-starter-zipkin</artifactId>-->
   </dependency>