我正在使用 Python 和 Flask 构建一个网络应用程序，并将 flask-googlemaps 作为我的最后一页。至于最后一页，我需要获取用户当前位置的经纬度。
这是我的run.py，
# coding: utf-8
from flask import Flask, render_template
from flask_googlemaps import GoogleMaps
from flask_googlemaps import Map, icons
import webbrowser
app = Flask(__name__, template_folder="templates")
GoogleMaps(app, key="my-key")
@app.route('/')
def mymap():
mymap = Map(
identifier="view-side",
varname="mymap",
style="height:720px;width:1100px;margin:0;", # hardcoded!
lat=37.4419, # hardcoded!
lng=-122.1419, # hardcoded!
zoom=15,
markers=[(37.4419, -122.1419)] # hardcoded!
)
return render_template('example_mymap.html', mymap=mymap)
if __name__ == "__main__":
webbrowser.open('http://127.0.0.1:5000')
app.run(debug=True, use_reloader=True)
这是我的example_mymap.html，
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Flask Google Maps Example</title>
<link rel="stylesheet" href="/static/css/bootstrap.min.css">
{{mymap.js}}
</head>
<body>
<div class="container">
<h1>Flask Google Maps Example</h1><hr>
{{ mymap.html }}
</div>
</body>
</html>
尝试搜索并得到很少的解决方案。试过这个，https://developers.google.com/maps/documentation/javascript/examples/map-geolocation但它没有用。在我的模板主体中添加以下脚本，没有任何结果。
<script>
// Note: This example requires that you consent to location sharing when
// prompted by your browser. If you see the error "The Geolocation service
// failed.", it means you probably did not give permission for the browser to
// locate you.
var map, infoWindow;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -34.397, lng: 150.644},
zoom: 6
});
infoWindow = new google.maps.InfoWindow;
// Try HTML5 geolocation.
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = {
lat: position.coords.latitude,
lng: position.coords.longitude
};
infoWindow.setPosition(pos);
infoWindow.setContent('Location found.');
infoWindow.open(map);
map.setCenter(pos);
}, function() {
handleLocationError(true, infoWindow, map.getCenter());
});
} else {
// Browser doesn't support Geolocation
handleLocationError(false, infoWindow, map.getCenter());
}
}
function handleLocationError(browserHasGeolocation, infoWindow, pos) {
infoWindow.setPosition(pos);
infoWindow.setContent(browserHasGeolocation ?
'Error: The Geolocation service failed.' :
'Error: Your browser doesn\'t support geolocation.');
infoWindow.open(map);
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
</script>
尝试了这个线程的解决方案，Getting map location Python , 但是，效果不佳。它给了我一条错误消息，说这段代码 latlon = re.search("GPoint\(([^)]+)\)",raw).groups(0) 是 无。这是确切的错误消息，AttributeError: 'NoneType' object has no attribute 'groups'
# coding: utf-8
from flask import Flask, render_template
from flask_googlemaps import GoogleMaps
from flask_googlemaps import Map, icons
import webbrowser
app = Flask(__name__, template_folder="templates")
GoogleMaps(app, key="my-key")
def get_current_location_lat_and_long(url):
import re, requests
raw = requests.get(url).text
latlon = re.search("GPoint\(([^)]+)\)",raw).groups(0)
lat,lon = map(float,latlon[0].split(","))
return lat,lon
@app.route('/')
def mymap():
cur_lat, cur_lng = get_current_location_lat_and_long(url='http://www.geoiptool.com/')
mymap = Map(
identifier="view-side",
varname="mymap",
style="height:720px;width:1100px;margin:0;", # hardcoded!
lat=cur_lat,
lng=cur_lng,
zoom=15,
markers=[(cur_lat,cur_lng)]
)
return render_template('example_mymap.html', mymap=mymap)
if __name__ == "__main__":
webbrowser.open('http://127.0.0.1:5000')
app.run(debug=True, use_reloader=True)
有人可以建议我另一种解决方案吗？任何建议将不胜感激。非常感谢。
请您参考如下方法:
我也在尝试创建网络应用程序，所以我被困在“知道你的位置”看到你的代码能够修改，猜猜它是什么工作!!
你修改后的py文件
from flask import Flask, render_template
from flask_googlemaps import GoogleMaps
from flask_googlemaps import Map
app = Flask(__name__)
GoogleMaps(app, key="my-key")
@app.route('/', methods=["GET"])
def my_map():
mymap = Map(
identifier="view-side",
varname="mymap",
style="height:720px;width:1100px;margin:0;", # hardcoded!
lat=37.4419, # hardcoded!
lng=-122.1419, # hardcoded!
zoom=15,
markers=[(37.4419, -122.1419)] # hardcoded!
)
return render_template('example.html', mymap=mymap)
if __name__ == "__main__":
app.run(debug=True, use_reloader=True)
修改后的 HTML
<!DOCTYPE html>
<html>
<head>
<title>Geolocation</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
// Note: This example requires that you consent to location sharing when
// prompted by your browser. If you see the error "The Geolocation service
// failed.", it means you probably did not give permission for the browser to
// locate you.
var map, infoWindow;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -34.397, lng: 150.644},
zoom: 6
});
infoWindow = new google.maps.InfoWindow;
// Try HTML5 geolocation.
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = {
lat: position.coords.latitude,
lng: position.coords.longitude
};
infoWindow.setPosition(pos);
infoWindow.setContent('Location found.');
infoWindow.open(map);
map.setCenter(pos);
}, function() {
handleLocationError(true, infoWindow, map.getCenter());
});
} else {
// Browser doesn't support Geolocation
handleLocationError(false, infoWindow, map.getCenter());
}
}
function handleLocationError(browserHasGeolocation, infoWindow, pos) {
infoWindow.setPosition(pos);
infoWindow.setContent(browserHasGeolocation ?
'Error: The Geolocation service failed.' :
'Error: Your browser doesn\'t support geolocation.');
infoWindow.open(map);
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=YOURAPIKEY&callback=initMap">
</script>
<body>
<div class="container">
<h1>Flask Google Maps Example</h1><hr>
{{ mymap.html }}
</div>
</body>
</html>
