elasticsearch使用时报错NoNodeAvailableException[None of the configured nodes are available:

Question

Exception in thread "main" NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{cxp6ccGHTlSKSdhOui5H9w}{localhost}{127.0.0.1:9300}]]
    at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:347)
    at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:245)
    at org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:59)
    at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:363)
    at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:408)
    at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:397)
    at org.elasticsearch.client.support.AbstractClient$IndicesAdmin.execute(AbstractClient.java:1250)
    at org.elasticsearch.client.support.AbstractClient$IndicesAdmin.exists(AbstractClient.java:1272)
    at com.mxt.test.test$.storeDataInES(test.scala:219)
    at com.mxt.test.test$.main(test.scala:157)
    at com.mxt.test.test.main(test.scala)

其中代码里的配置信息是

      "es.httpHosts" -> "localhost:9200",
      "es.transportHosts" -> "localhost:9300",
      "es.index" -> "recommender",
      "es.cluster.name" -> "elasticsearch"

elasticsearch.yml配置文件中均为默认未更改