1
首先，我想說我不太經驗Google Maps Javascript API v3（我唯一的經驗是最近3天）。我已成功地顯示與標記列表的地圖，並使用DirectionsService將它們連接起來，但有時我的名單是相當大的，我得到了以下錯誤：請求實體太大 - 谷歌地圖方向錯誤413
Failed to load resource: the server responded with a status of 413 (Request Entity Too Large)
這是我的代碼：
// List of all locations for device
var locations = [];
// example: locations = [
// {datetime: '2014/09/28 20:20', location: '41.99999 21.99999 30.0'},
// ... {...} ... may be more than 200 entries for locations
// {datetime: '2014/09/28 20:25', location: '41.99999 21.99999 30.0'}
// ]
var map;
var markers = [];
var bounds = new google.maps.LatLngBounds();
var pathPoints = [];
var infoWindow = new google.maps.InfoWindow();
var accuracy = new google.maps.Circle({
fillColor: '#ff4080',
fillOpacity: 0.5,
strokeOpacity: 0,
zIndex: 0
});
var path = new google.maps.Polyline(polyOptions);
var geocoder;
var directionsService = new google.maps.DirectionsService();
var directionsDisplay;
var polyOptions = {
geodesic: true,
strokeColor: '#28b8b8',
strokeOpacity: 1.0,
strokeWeight: 8,
zIndex: 1
}
function showInfoWindow(marker, datetime, acc){
geocoder = new google.maps.Geocoder();
geocoder.geocode({
'latLng': marker.getPosition()
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (results[1]) {
infoWindow.close();
var date = datetime.split(" ")[0];
var time = datetime.split(" ")[1];
var content = '<div class="infowindow">'
+ results[1].formatted_address.trim() + '<br />'
+ 'Date: ' + date + '<br />'
+ 'Time: ' + time + '<br />'
+ 'Accuracy: ' + acc + 'm'
+ '</div>';
infoWindow.setContent(content);
infoWindow.open(map, marker);
accuracy.setMap(null);
accuracy.setMap(map);
accuracy.setCenter(marker.getPosition());
accuracy.setRadius(acc/1.6);
} else {
// alert('No results found');
}
} else {
alert('Geocoder failed due to: ' + status);
}
});
}
function addMultiMarker(latLng, num, datetime, acc){
// Create marker at provided location
var marker = new google.maps.Marker({
position: latLng,
map: map,
icon: image_circle,
title: 'Location #' + num,
zIndex: num + 1
});
// On marker click center it inside map and show infoWindow
google.maps.event.addListener(marker, 'click', function() {
map.panTo(marker.getPosition());
showInfoWindow(marker, datetime, acc);
});
return marker;
}
function showRoute() {
var rendererOptions = {
draggable: false,
hideRouteList: true,
suppressMarkers: true,
infoWindow: infoWindow,
polylineOptions: polyOptions,
map: map
};
directionsDisplay = new google.maps.DirectionsRenderer(rendererOptions);
var len = markers.length;
var start = markers[0].getPosition();
var end = markers[len - 1].getPosition();
new google.maps.event.trigger(markers[len - 1], 'click');
var wayPts = [];
for(var i = 1; i < len - 1; i++){
wayPts.push({
location: markers[i].getPosition(),
stopover: true
});
}
var request = {
origin: start,
destination: end,
waypoints: wayPts,
optimizeWaypoints: true,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
}
});
}
function showMapPeriod(periodStart, periodEnd){
// Simple map options
var mapOptions = {
zoom: 15,
center: new google.maps.LatLng(41, 21),
mapTypeId : google.maps.MapTypeId.ROADMAP,
mapTypeControl: true,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
position: google.maps.ControlPosition.TOP_RIGHT
},
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.LARGE,
position: google.maps.ControlPosition.LEFT_CENTER
},
panControl: false,
streetViewControl: false
};
$("#map").html("");
// Create and show map
openMapContainer(); // just a function that shows the map <div> element
map = new google.maps.Map(document.getElementById('map'), mapOptions);
// Create and display markers
bounds = new google.maps.LatLngBounds();
markers = [];
var len = 0;
for(var i = periodStart; i <= periodEnd; i++, len++){
var loc_vals = locations[i].location.trim().split(" ");
var lat = parseFloat(loc_vals[0]);
var lng = parseFloat(loc_vals[1]);
var acc = parseFloat(loc_vals[2]);
// Create marker at provided location
var datetime = locations[i].datetime;
var latLng = new google.maps.LatLng(lat, lng);
markers[len] = addMultiMarker(latLng, len+1, datetime, acc);
bounds.extend(latLng);
}
showRoute();
map.fitBounds(bounds);
}
那麼我的代碼部分工作，如果有人可以幫助我消除這個問題，我將非常感激。爲了更好地解釋它，我需要某種解決方案來請求Directions提供很多（200+）路標或某種方式來連接路段中的位置（我並不真正需要路線，但我不想連接地理位置簡單Polyline）。
編輯：Here我已經提供了一個簡單的演示，看到在line 15只是取消註釋的問題。
請提供一個展示此問題的示例。 – geocodezip 2014-09-28 22:40:55
如何更改這些以展示此問題？ – geocodezip 2014-09-29 03:57:20
在這裏[小提琴]（http://jsfiddle.net/o3zqhsaz/6/），你可以看到點沒有連接 – kiko283 2014-09-30 06:55:10