我正在使用Elastic的JAVA高级REST客户端从Java中搜索弹性搜索索引。
我的回复看起来像这样...
{
"took": 25,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 10000,
"relation": "gte"
},
"max_score": 2,
"hits": [
{
"_index": "contacts_1_rvmmtqnnlh",
"_type": "_doc",
"_id": "1",
"_score": 2,
"_source": {
"location": {
"lon": -71.34,
"lat": 41.12
}
}
},
{
"_index": "contacts_1_rvmmtqnnlh",
"_type": "_doc",
"_id": "5291485",
"_score": 2,
"_source": {
"home_address1": "208 E Main ST Ste 230",
"firstname": "Geri",
"home_city": "Belleville",
"location": "39.919499456869055,-89.08605153191894",
"lastname": "Boyer"
}
},
...
{
"_index": "contacts_1_rvmmtqnnlh",
"_type": "_doc",
"_id": "5291492",
"_score": 2,
"_source": {
"home_address1": "620 W High ST",
"firstname": "Edna",
"home_city": "Nashville",
"location": "40.55917440131824,-89.24254785283054",
"lastname": "Willis"
}
}
]
}
}
如何解析每个文档的经度和纬度?纬度和经度存储在名为“位置”的字段中,该字段的类型为GeoPoint
这是我尝试过的...
SearchHit[] hits = searchResponse.getHits().getHits();
for (SearchHit hit : hits) {
Map<String, Object> contactMap = hit.getSourceAsMap();
LinkedHashMap<String, Object> contactLHM = new LinkedHashMap<>(contactMap);
Object coordinate = contactLHM.get("location");
location.latitude = ??????
location.longitude = ?????
}
鉴于坐标变量的值为,我该如何解析经度和纬度
{lon = -71.34,lat = 41.12}
顺便说一下,这是位置类定义:
public static class Location{
public Double latitude;
public Double longitude;
}
这里的来源表示您使用不同的_source保存了文档。您可以使用geo_point type进行此操作,当然也可以使用相同的查询进行查询。基本上,elasticsearch会理解这两种格式并将其分析为相同的结构(纬度,经度),但这并不意味着它将更改您的源(正是您保存的数据)。
首先,如果这是一个选项,则只需用一种方法保存数据,因此_source总是相同的。如果这不是一个选择,则您需要处理两种格式(位置作为字符串,位置作为lat和lon对象)。此外,您可以通过脚本更新_source。
https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-update-by-query.html