Elasticsearch-多边形范围查询(8.x)

一、字段设计

java 复制代码

PUT /aoi_points
{
  "mappings": {
    "properties": {
      "location": {
        "type": "geo_shape"
      }
    }
  }
}

aoi_points是索引名称，location是字段名称，它将存储地理形状数据

二、数据录入

java 复制代码

POST /aoi_points/_doc
{
  "location": {
    "type": "point",
    "coordinates": [-74.0060, 40.7128]
  }
}

三、查询语句

java 复制代码

GET /aoi_points/_search
{
  "query": {
    "bool": {
      "filter": {
        "geo_shape": {
          "location": {
            "shape": {
              "type": "polygon",
              "coordinates": [
                [
                  [-74.02, 40.715],
                  [-73.99, 40.715],
                  [-73.99, 40.705],
                  [-74.02, 40.705],
                  [-74.02, 40.715]
                ]
              ]
            },
            "relation": "within"
          }
        }
      }
    }
  }
}

location是存储地理位置的字段
shape定义了一个多边形区域，coordinates是一个数组，包含多边形顶点的坐标
relation指定了查询的地理空间关系，这里是within，表示查询多边形内部的点
多边形的坐标点需要按顺序（通常是顺时针或逆时针）排列，形成一个闭合的多边形

四、Java代码实现

具体查询对象，可自行定义，本方法只提供思路，莫直接粘贴使用

java 复制代码

        // 封装ES查询参数
        BoolQuery.Builder boolQueryBuilder = new BoolQuery.Builder();
        // AOI范围查询
        ShapePO shapePo =
                    new ShapePO().setType(GeographyType.POLYGON.getValue()).setCoordinates(poi.getAoi().getCoordinates());
        // 多边形查询
        GeoShapeQuery geoShapeQuery =
            GeoShapeQuery.of(geoShape -> geoShape.field(PoiIndexConstant.LOCATION)
                    .shape(s -> s.shape(JsonData.fromJson(JSONUtil.toJsonStr(shapePo))).relation(GeoShapeRelation.Within)))._toQuery().geoShape();
        boolQueryBuilder.filter(f -> f.geoShape(geoShapeQuery));
        int size = poi.getAoi().getCoordinates().get(0).size();

        SearchRequest.Builder searchRequestBuilder = new SearchRequest.Builder();
        searchRequestBuilder.index(esIndexProperties.getPoiIndexRead())
                .query(query -> query.bool(boolQueryBuilder.build()))
                .size(size);

        // ES查询
        SearchRequest searchRequest = searchRequestBuilder.build();
        log.info("getSmallAttractionByPoiId query:{}", searchRequest.toString());
        SearchResponse<PoiIndex> searchResponse = esUtil.queryDocument(searchRequest, PoiIndex.class);

        if (searchResponse.hits().hits().isEmpty()) {
            return List.of();
        }
        List<SmallAttractionDTO> smallAttractionDtoList = new ArrayList<>();
        for (Hit<PoiIndex> hit : searchResponse.hits().hits()) {
            // 业务处理
        }