elasticsearch统计数量

post ip:port/index/type/_search
{
  "from": 0,
  "size": 0,
  "query": {
    "bool": {
      "must": [{
          "match_phrase": {
            "name": {
              "query": "aaaa",
              "slop": 0,
              "boost": 1
            }
          }
        },
        {
          "range": {
            "startTime": {
              "from": 1661616000391,
              "to": null,
              "include_lower": true,
              "include_upper": true,
              "boost": 1
            }
          }
        }
      ]
    }
  },
  "_source": {
    "includes": [
      "COUNT"
    ],
    "excludes": []
  },
  "aggregations": {
    "COUNT(*)": {
      "value_count": {
        "field": "_index"
      }
    }
  }
}

SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
AggregationBuilder sumAggregationBuilder = AggregationBuilders.count("count").field("_index");
sourceBuilder.aggregation(sumAggregationBuilder);

BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
//查询条件
queryBuilder.must(QueryBuilders.matchPhraseQuery("name.keyword",name));
queryBuilder.must(QueryBuilders.rangeQuery("startTime").gte(startTime));
//设置条件和结果数量
sourceBuilder.query(queryBuilder).from(0).size(0);

//查询索引对象
SearchRequest searchRequest = new SearchRequest(index).types(type).source(sourceBuilder);

//不同版本请求ES的方式不一样
SearchResponse response = client.search(searchRequest).actionGet();
SearchResponse response = client.getClient().search(rq,RequestOptions.DEFAULT);

//返回结果
long total = response.getHits().getTotalHits();