org.elasticsearch.client
                 
     
      transport
             
    

/**     *  初始化TransportClient对象， 这里只配置了单个节点，例如100.100.0.1:8090     */    private TransportClient initClient() throws UnknownHostException {        String node = esSetting.getClusterNodes();        int index = node.indexOf(":");        String host = node.substring(0, index);        int port = Integer.valueOf(node.substring(index + 1));                Settings settings = Settings.builder()                //elasticsearch节点名称                .put("cluster.name", esSetting.getClusterName())                .put("client.transport.sniff", true).build();                InetAddress address = InetAddress.getByName(host);        TransportClient client = new PreBuiltTransportClient(settings);        client.addTransportAddress(new InetSocketTransportAddress(address, port));                return client;    }

//查询，根据数据中date字段查询， 这里是最常用的boolQuery示例，可以通过must、must_not、filter等方法设定查询条件        QueryBuilder queryBuilder = QueryBuilders.boolQuery()                .must(QueryBuilders.rangeQuery("date").gte("2018-11-08T00:00:00.000Z")                        .lt("2018-11-09T00:00:00.000Z"));                //elasticsearch索引及类型，对应数据库中数据库和表        String index = "index";        String type = "type";        SearchResponse response = client.prepareSearch(index)                .setTypes(type).addSort("date", SortOrder.ASC)                .setSize(1000).setQuery(queryBuilder).execute()                .actionGet();                long total = response.getHits().getTotalHits();

try {            XContentBuilder builder = XContentFactory.jsonBuilder()                    .startObject().field("date", "2018-11-08T00:00:00.000Z")                    .field("cost", 10);            builder.endObject();            IndexResponse response = client                    .prepareIndex(index, type)                    .setSource(builder).get();        } catch (Exception e) {            e.printStackTrace();        }