地理编码时如何获取城市名称?

Question

我正在使用 Mapbox 地理编码 API 来查找用户输入提供的地点的纬度和经度。这很好用。我还想显示此位置的城市名称。

这是一个示例请求，用于搜索"70176"(德国的邮政编码(：

https://api.mapbox.com/geocoding/v5/mapbox.places/70176.json?fuzzyMatch=true&language=en&access_token=redacted

答案如下：

{
"type":"FeatureCollection",
"query":[
"70176"
],
"features":[
{
"id":"postcode.12480061547829920",
"type":"Feature",
"place_type":[
"postcode"
],
"relevance":1,
"properties":{
},
"text_en":"70176",
"place_name_en":"70176, Stuttgart, Baden-Württemberg, Germany",
"text":"70176",
"place_name":"70176, Stuttgart, Baden-Württemberg, Germany",
[...]
}

如您所见，它确实提供了包括城市("斯图加特"(的完整地址，但它没有分开。您可以通过在查询中包含&types=place来指定仅查找城市，但随后它也只接受城市名称作为输入。

如何在不进行两次 API 调用的情况下获取纬度、经度和城市名称？

Answer 1

您实际上从您发出的请求中获取了所有这些信息：

边界框中心的坐标，装箱城市在要素 JSON 对象的"中心"项中返回。从要素对象的"place_name"项获取的城市名称。您必须解析字符串并用逗号将其拆分，然后选择返回数组的第二项以获取城市名称。

{
"type": "FeatureCollection",
"query": [
"70176"
],
"features": [
{
"id": "postcode.12480061547829920",
"type": "Feature",
"place_type": [
"postcode"
],
"relevance": 1,
"properties": {},
"text_en": "70176",
"place_name_en": "70176, Stuttgart, Baden-Württemberg, Germany",
"text": "70176",
"place_name": "70176, Stuttgart, Baden-Württemberg, Germany",
"bbox": [
9.155781,
48.77099,
9.169018,
48.784448
],
"center": [
9.16,
48.78
],
"geometry": {
"type": "Point",
"coordinates": [
9.16,
48.78
]
},
"context": [
{
"id": "place.5443458428087800",
"wikidata": "Q1022",
"text_en": "Stuttgart",
"language_en": "en",
"text": "Stuttgart",
"language": "en"
},
{
"id": "region.10788925313210430",
"short_code": "DE-BW",
"wikidata": "Q985",
"text_en": "Baden-Württemberg",
"language_en": "en",
"text": "Baden-Württemberg",
"language": "en"
},
{
"id": "country.10743216036480410",
"short_code": "de",
"wikidata": "Q183",
"text_en": "Germany",
"language_en": "en",
"text": "Germany",
"language": "en"
}
]
},