spring-boot - 如何在 Elasticsearch 中使用经度搜索位置附近的区域

Question

我想通过 Elasticsearch 来搜索所有给定的经纬度附近的所有位置，该纬度有两个单独的纬度和经度列。
这该怎么做

Answer 1

您将必须使用geoDistanceQuery。请在下面找到代码片段(使用Elasticsearch REST高级客户端以Java编写)。

仅供引用:在我的网站上可以找到完整的教程:www.ictdynamic.be-> ElasticSearch 6 –使用RestHighLevelClient和Java的空间查询–第1部分:geoDistanceQuery

    public Set<?> geoDistanceQuery(String index, String nameGeoPointField, double lat, double lon, double distance, EsQuery esQuery) throws IOException {
    Date startDate = new Date();

    Set<Object> objectsWithinDistance = new LinkedHashSet<>();
    SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();

    QueryBuilder geoDistanceQueryBuilder = QueryBuilders
            .geoDistanceQuery(nameGeoPointField)
            .point(lat, lon)
            .distance(distance, DistanceUnit.KILOMETERS);

    BoolQueryBuilder boolQuery = getBooleanQueryWithConditions(esQuery);

    QueryBuilder completeQuery = QueryBuilders
            .boolQuery()
            .must(boolQuery)
            .filter(geoDistanceQueryBuilder);

    sourceBuilder.query(completeQuery).size(SIZE_ES_QUERY);

    SearchRequest searchRequest = new SearchRequest(index)
            .source(sourceBuilder.sort(SortBuilders.geoDistanceSort(nameGeoPointField, lat, lon)
                    .order(SortOrder.ASC)
                    .unit(DistanceUnit.KILOMETERS)));

    SearchResponse searchResponse = restClient.search(searchRequest, RequestOptions.DEFAULT);

    SearchHits hits = searchResponse.getHits();

    for (SearchHit hit : hits.getHits()) {
        objectsWithinDistance.add(GeoService.getObjectFrom_ES_Hit(hit, nameGeoPointField));
    }

    return timedReturn(LOGGER, new Object() {}.getClass().getEnclosingMethod().getName(), startDate.getTime(), objectsWithinDistance);
}