Question

我从Google地理编码API获得“超过查询限制”。

如果可能的话，我想尝试解决它。该网页可从外界获得，因此我想每隔X分钟对所有用户执行一次“地理编码”功能。因此，如果任何新用户连接到网页，则“地理编码”不应再次运行。

我添加了“setInterval”选项，我想知道它是否能帮助我实现所需的结果。

<!DOCTYPE html>
<html>
  <head>
    <title>Simple Map</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <META HTTP-EQUIV="Refresh" CONTENT="420">
    <style type="text/css">
      html, body, #map-canvas {
        height: 100%;
        margin: 0px;
        padding: 0px
      }

       .labels {
     color: orange;
     background-color: black;
     font-family: "Lucida Grande", "Arial", sans-serif;
     font-size: 10px;
     font-weight: bold;
     text-align: center;
     width: 50px;     
     border: 2px solid black;
     white-space: nowrap;}
    </style>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script src="https://jquery-xml2json-plugin.googlecode.com/svn/trunk/jquery.xml2json.js" type="text/javascript" language="javascript"></script>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
    <script src="http://google-maps-utility-library-v3.googlecode.com/svn/tags/markerwithlabel/1.0.1/src/markerwithlabel.js"></script>
    <script>
var markers = [];
var map = null;

  $.get('Customers.xml', function(xml) {
      var jsonObj = $.xml2json(xml);
        $.each(jsonObj.Marker, function(){
            var stat = this.site_status == "Critical" ? "http://maps.google.com/mapfiles/ms/micons/red-dot.png" : "http://maps.google.com/mapfiles/ms/micons/green-dot.png";
                 var mark = {
                        title: this.title,
                        location: this.site_location,
                        icon: stat
                        }
                markers.push(mark);
        });
        for(var i=0; i< markers.length; i++){
          var maddress = markers[i].location;
          var image = markers[i].icon;
          var custname = markers[i].title;

          window.setInterval(function(){
             geocodeAddress(maddress, image, custname,map)}, 7500);
        } 
});     

function geocodeAddress(maddress, image, custname,map) {
  var geocoder = new google.maps.Geocoder();
  geocoder.geocode( { 'address': maddress}, function(results, status) { 
    if (status == google.maps.GeocoderStatus.OK) {   
      var myLatlng = new google.maps.LatLng(results[0].geometry.location.lat(),results[0].geometry.location.lng());
      var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/';
      var marker = new MarkerWithLabel({
      position: myLatlng, map:map, icon: image,labelContent: custname,
       labelAnchor: new google.maps.Point(22, 0),
       labelClass: "labels", // the CSS class for the label
       labelStyle: {opacity: 0.75}});
    } else {
      alert("Geocode was not successful for the following reason: " + status);
    }
  });
}

function initialize() {
    var chicago = new google.maps.LatLng(35.442579,-40.895920);
    var mapOptions = {
        zoom: 4,
        center: chicago,
        mapTypeId: google.maps.MapTypeId.ROADMAP
  }

  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
}
google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
     <div id="map-canvas"></div>
  </body>
</html>

提前致谢。

Answer 1

如果customers.xml很少更改，那么我会缓存lat / lng值并将它们添加到customers.xml文件中。谷歌允许缓存30天。在伪代码中：

If ( my customers.xml file changed || last_change > 30 days )
{
    re-execute google API reverse geocoding and save lat/lng results to customers.xml file
}
else
{
    use lat/lng from customers.xml file
}

Google地图超过查询限制

1 个答案: