Google Maps API v3 中的 OVER_QUERY_LIMIT:如何在 Javascript 中暂停/延迟以减慢速度? [英] OVER_QUERY_LIMIT in Google Maps API v3: How do I pause/delay in Javascript to slow it down?
问题描述
我遇到了一个在这些论坛中讨论得很好的问题，但似乎没有任何建议对我有用，所以我正在寻找一些完整的 javascript，它可以在另存为 html 文件时工作.
I'm hitting an issue that is WELL discussed in these forums, but none of the recommendations seem to be working for me so I'm looking for some full javascript that works when saved as an html file.
问题是当我尝试使用 Javascript 调用的 V3 API 对 Google 地图上的 > 11 个位置进行地理编码时，我一直遇到 OVER_QUERY_LIMIT 错误.我知道您可以调用地理编码器的速率有限制(以及总体积的每日限制)，因此我需要在数组中的每个结果之间引入暂停.
The issue is I keep hitting the OVER_QUERY_LIMIT error when trying to geocode > 11 locations on a Google Map using the V3 APIs called by Javascript. I understand that there is a limit to the rate at which you can call the geocoder (as well as the daily limit on total volume), so I need to introduce a pause in between each result in the array.
非常感谢任何帮助.
这是我的代码:
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var geocoder;
var map;
var wait = false;
function initialize() {
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(51.32, 0.5);
var myOptions = {
zoom: 8,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
codeAddress('KT16 8LA' + ', UK');
codeAddress('LS8 2LQ' + ', UK');
codeAddress('NE13 8AF' + ', UK');
codeAddress('KT12 2BE' + ', UK');
codeAddress('W1W 8AN' + ', UK');
codeAddress('EC3N 2LS' + ', UK');
codeAddress('BS9 3BH' + ', UK');
codeAddress('KA10 6LZ' + ', UK');
codeAddress('EC1V 9BW' + ', UK');
codeAddress('WD18 8YN' + ', UK');
codeAddress('HA3 6DQ' + ', UK');
codeAddress('W1U 3PL' + ', UK');
codeAddress('W1T 7QL' + ', UK');
codeAddress('W1S 1TD' + ', UK');
codeAddress('SW1X 8NX' + ', UK');
codeAddress('LE2 8ET' + ', UK');
codeAddress('BA3 4BH' + ', UK');
codeAddress('AL3 8JP' + ', UK');
codeAddress('DE55 4QJ' + ', UK');
codeAddress('W6 0QT' + ', UK');
codeAddress('LA1 1PP' + ', UK');
codeAddress('SW16 4DH' + ', UK');
codeAddress('WC2N 6DF' + ', UK');
codeAddress('RM6 6LS' + ', UK');
codeAddress('S25 3QZ' + ', UK');
codeAddress('WC2H 7LR' + ', UK');
codeAddress('BH24 1DW' + ', UK');
codeAddress('EC2N 6AR' + ', UK');
codeAddress('W1U 2FA' + ', UK');
codeAddress('B60 3DX' + ', UK');
}
function codeAddress(vPostCode) {
if (geocoder) {
geocoder.geocode( { 'address': "'" + vPostCode + "'"}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
} else {
alert("Geocode was not successful for the following reason: " + status);
}
});
}
}
</script>
<body style="margin:0px; padding:0px;" onload="initialize()">
<div id="map_canvas" style="width:100%; height:90%"></div>
</body>
这是我试图让它在相关部分暂停/等待的方法，但它没有做任何事情:
This is what I've tried to do to get it to pause/wait in the relevant section, but it doesn't do anything:
function codeAddress(vPostCode) {
if (geocoder) {
while (wait) { /* Just wait. */ };
geocoder.geocode( { 'address': "'" + vPostCode + "'"}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
/* When geocoding "fails", see if it was because of over quota error: */
} else if (status == google.maps.GeocoderStatus.OVER_QUERY_LIMIT) {
wait = true;
setTimeout("wait = true", 2000);
//alert("OQL: " + status);
} else {
alert("Geocode was not successful for the following reason: " + status);
}
});
}
}
推荐答案
Mike Williams 的教程中没有像这两行那样出现:
Nothing like these two lines appears in Mike Williams' tutorial:
wait = true;
setTimeout("wait = true", 2000);
这是第 3 版端口:
http://acleach.me.uk/gmaps/v3/plotaddresses.htm
相关的代码是
// ====== Geocoding ======
function getAddress(search, next) {
geo.geocode({address:search}, function (results,status)
{
// If that was successful
if (status == google.maps.GeocoderStatus.OK) {
// Lets assume that the first marker is the one we want
var p = results[0].geometry.location;
var lat=p.lat();
var lng=p.lng();
// Output the data
var msg = 'address="' + search + '" lat=' +lat+ ' lng=' +lng+ '(delay='+delay+'ms)<br>';
document.getElementById("messages").innerHTML += msg;
// Create a marker
createMarker(search,lat,lng);
}
// ====== Decode the error status ======
else {
// === if we were sending the requests to fast, try this one again and increase the delay
if (status == google.maps.GeocoderStatus.OVER_QUERY_LIMIT) {
nextAddress--;
delay++;
} else {
var reason="Code "+status;
var msg = 'address="' + search + '" error=' +reason+ '(delay='+delay+'ms)<br>';
document.getElementById("messages").innerHTML += msg;
}
}
next();
}
);
}
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