python - geojson转换为Elasticsearch:无法解析类型为[geo_shape]的字段[geometry.coordinates]

Question

我正在尝试使用Python将geojson文件索引到elasticsearch(版本7.6.2)中。

这是我在elasticsearch中定义的映射。

'mappings': {
  "properties": {
    "geometry": {
      "properties": {
        "coordinates": {
          "type": "geo_shape"
        },
        "type": {
          "type": "text",
          "fields": {
            "keyword": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        }
      }
    },    
 }
}

geojson文件如下所示:

{
"type": "FeatureCollection",
"name": "testting",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
"features": [
{ "type": "Feature", "properties": { "LEGEND": "x_1", "THRESHOLD": -109, "COLOR": "0 0 255", "Prediction": "Coverage" }, "geometry": { "type": "MultiPolygon", "coordinates": [ [ [ [ 151.20061069847705, -33.886918725260998 ], [ 151.200620164862698, -33.886467994010133 ].....

但是，当我将文件写入Elasticsearch时，受到此链接的启发:

How to index geojson file in elasticsearch?

def geojson2es(gj):
    for feature in gj['features']:
        yield feature

with open(input_path+'/'+ data) as f:
    gj = json.load(f)

    es = Elasticsearch(hosts=[{'host': 'localhost', 'port': 9200}])

    k = [{
        "_index": "test",
        "_source": feature,
    } for feature in geojson2es(gj)]

    helpers.bulk(es, k)

我有这个错误:

{'type':'mapper_parsing_exception'，
'reason':'无法解析类型为[geo_shape]的字段[geometry.coordinates]'，'
cause_by':
{'type':'parse_exception'，'reason':'形状必须是由类型和坐标组成的对象'}}

有没有人遇到过类似的问题？我该如何解决？

Answer 1

您的映射不正确。 geo_shape type已经隐含了type和coordinates，因此您无需再次声明它们。

因此，您的映射应该是这样的，即每个功能都有一个type(例如Feature，properties的哈希值和geometry类型的geo_shape):

{
  "mappings": {
    "properties": {
      "type": {
        "type": "keyword"
      },
      "properties": {
        "type": "object"
      },
      "geometry": {
        "type": "geo_shape"
      }
    }
  }
}