RestClient构建器将响应发送到9201而不是9200

Question

在尝试将数据（JSON格式的字符串）上传到ElasticSearch（版本6.3.1）时，restclient将响应发送到9201而不是9200，即使我没有提到9201。Reference

这是我用来设置RestClient的代码-

private static void restWorkPUT() throws IOException {

    RestClient restClient = RestClient.builder(
            new HttpHost("localhost", 9200, "http")
            ).build();

    jsonDataToUpload = "{\n" + "    \"user\" : \"kimchy\",\n" + "    \"post_date\" : \"2009-11-15T14:12:12\",\n"
                            + "    \"message\" : \"trying out Elasticsearch\"\n" + "}";

    HttpEntity entity = new NStringEntity(jsonWithIndex,
            ContentType.APPLICATION_JSON);

    Response indexResponse = restClient.performRequest("POST", "/testabc/abc/1", Collections.<String, String>emptyMap(), entity);

}

现在，当我按下http://localhost:9200/testabc/abc/1时，我看到了响应

{
    "error": {
    "root_cause": [
    {
    "type": "index_not_found_exception",
    "reason": "no such index",
    "resource.type": "index_expression",
    "resource.id": "testabc",
    "index_uuid": "_na_",
    "index": "testabc"
    }
    ],
    "type": "index_not_found_exception",
    "reason": "no such index",
    "resource.type": "index_expression",
    "resource.id": "testabc",
    "index_uuid": "_na_",
    "index": "testabc"
    },
    "status": 404
}

当我点击http://localhost:9201/testabc/abc/1时，我会看到响应-

{
"_index": "testabc",
"_type": "abc",
"_id": "1",
"_version": 4,
"found": true,
"_source": {
"user": "kimchy",
"post_date": "2009-11-15T14:12:12",
"message": "trying out Elasticsearch"
}
}

我希望能够将JSON数据上传到托管在9200的Kibana / ElasticSearch。

任何有关如何解决此问题的建议将不胜感激。