Question

我知道place_id，我需要知道它的坐标。

我可以GET https://maps.googleapis.com/maps/api/geocode/json?place_id=ChIJOwE7_GTtwokRFq0uOwLSE9g&key=KEY_GOES_HERE

给了我类似的东西：

```   "results" : [
      {
         "address_components" : [...],
         "formatted_address" : "New York County, NY, USA",
         "geometry" : {
            "bounds" : {...},
            "location" : {
               "lat" : 40.7830603,
               "lng" : -73.9712488
            },
            "location_type" : "APPROXIMATE",
            "viewport" : {...}
         },
         "partial_match" : true,
         "place_id" : "ChIJOwE7_GTtwokRFq0uOwLSE9g",
         "types" : [...]
      }
   ],
   "status" : "OK"
```

但我需要通过javascript api。

我的页面上没有任何地图，只需要获取坐标。

Answer 1

来自the example in the Google Maps Javascript API v3 documentation（使用您的place_id）：

var infowindow = new google.maps.InfoWindow();
var service = new google.maps.places.PlacesService(map);

service.getDetails(request, function(place, status) {
  if (status == google.maps.places.PlacesServiceStatus.OK) {
    var marker = new google.maps.Marker({
      map: map,
      position: place.geometry.location
    });
    google.maps.event.addListener(marker, 'click', function() {
      infowindow.setContent(place.name);
      infowindow.open(map, this);
    });
    map.fitBounds(place.geometry.viewport);
  }
});

working fiddle

代码段：

＆＃13;

var geocoder;
var map;

function initialize() {
  var map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  var request = {
    placeId: 'ChIJOwE7_GTtwokRFq0uOwLSE9g'
  };

  var infowindow = new google.maps.InfoWindow();
  var service = new google.maps.places.PlacesService(map);

  service.getDetails(request, function(place, status) {
    if (status == google.maps.places.PlacesServiceStatus.OK) {
      var marker = new google.maps.Marker({
        map: map,
        position: place.geometry.location
      });
      google.maps.event.addListener(marker, 'click', function() {
        infowindow.setContent(place.name);
        infowindow.open(map, this);
      });
      map.fitBounds(place.geometry.viewport);
    }
  });

}
google.maps.event.addDomListener(window, "load", initialize);

＆＃13;

html,
body,
#map_canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

＆＃13;

<script src="https://maps.googleapis.com/maps/api/js?libraries=places"></script>
<div id="map_canvas" style="border: 2px solid #3872ac;"></div>

＆＃13;

Answer 2

你不需要地图。它是一个Restful Web服务，它返回一个JSON字符串。在您的应用程序中，您只需要向

发送HTTP请求

获取https://maps.googleapis.com/maps/api/geocode/json?place_id=ChIJOwE7_GTtwokRFq0uOwLSE9g&key=KEY_GOES_HERE

然后解析返回的JSON字符串，并检索里面的latlng。

如果您在网络应用中使用Jquery，则可以

    $.ajax({
            type: "GET",
            url: "https://maps.googleapis.com/maps/api/geocode/json?place_id=ChIJOwE7_GTtwokRFq0uOwLSE9g&key=KEY_GOES_HERE",
            dataType: "text", 
            success: function (yourJSONstring){
                var respJson = $.parseJSON(yourJSONstring);  

            // then something like ... 
            // respJson.results[0].geometry.location.lat;
            // respJson.results[0].geometry.location.lng; 


            },
            error: function (xhr) {
            }
        });

Answer 3

它正在发生，因为location属性的类型为google.maps.LatLng。

为了获得lat和lng，可以使用以下函数：例如：

place.geometry.location.any_function_below()

1. toString():  Converts to string representation.eg ((37.8042802, -122.41364429999999))
2. lat(): Returns the latitude in degrees.
3. lng(): Returns the longitude in degrees.
4. toJSON(): Converts to JSON representation ({lat: "", lng: ""}).
5. toUrlValue(precision?:number): Returns a string of the form "lat,lng" for this LatLng. We round the lat/lng values to 6 decimal places by default.

你可以在这里阅读更多内容：https://developers.google.com/maps/documentation/javascript/3.exp/reference#LatLng。

Answer 4

`//only add these line under function`
autocomplete.addListener('place_changed', function() {
var place = autocomplete.getPlace();
autocomplete.setFields(['place_id', 'geometry', 'name', 'formatted_address']);
var lng = place.geometry.location.lng();
var lat = place.geometry.location.lat();
var latlng = {lat , lng};
console.log(latlng);

}）;

Answer 5

您可以像这样检索它的位置

var obj = JSON.parse(yourJSONstring);


obj.results[0].geometry.location.lat;
obj.results[0].geometry.location.lng;

如何通过google javascript api获取知道place_id的位置坐标

5 个答案: