我有执行地理编码和显示图层的代码。现在我想添加KML文件显示功能.openlayers库中有用于此的代码。我合并了代码，但没有答案。请指导我。问题似乎出在以下代码中：
interactions：ol.interaction.defaultInteractions（）。extend（[dragAndDropInteraction]） 互动：ol.interaction.defaults（{altShiftDragRotate：false，pinchRotate：false}）
这是我的代码：
<!DOCTYPE html>
<html>
<head>
<title>Bing Maps</title>
<link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/css/ol.css" type="text/css">
<link rel="stylesheet" href="https://openlayers.org/en/v4.6.5/css/ol.css" type="text/css">
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
<script src="https://openlayers.org/en/v4.6.5/build/ol.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="description" content="Control to add a grid reference to a map." />
<meta name="keywords" content="ol3, control, search, BAN, french, places, autocomplete" />
<!-- FontAwesome -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<!-- jQuery -->
<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>
<!-- IE 9 bug on ajax tranport -->
<!--[if lte IE 9]>
<script type='text/javascript' src='//cdnjs.cloudflare.com/ajax/libs/jquery-ajaxtransport-xdomainrequest/1.0.3/jquery.xdomainrequest.min.js'></script>
<![endif]-->
<!-- Openlayers -->
<link rel="stylesheet" href="https://openlayers.org/en/latest/css/ol.css" />
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL,Object.assign"></script>
<!-- ol-ext -->
<link rel="stylesheet" href="http://viglino.github.io/ol-ext/dist/ol-ext.css" />
<script type="text/javascript" src="http://viglino.github.io/ol-ext/dist/ol-ext.js"></script>
<link rel="stylesheet" href="../style.css"/>
<style>
.ol-search ul {
color: #333;
font-size:0.85em;
max-width: 21em;
}
.ol-search ul i {
display: block;
color: #333;
font-size:0.85em;
}
.info {
display: inline-block;
width: 100%;
}
.info a img {
height: 100px;
margin-right: .5em;
float: left;
}
</style>
<style>
html, body {
height: 100%;
width: 100%;
padding: 0px;
margin: 0px;
}
.map {
height: 90%;
width: 100%;
}
</style>
<style>
.tooltip {
position: relative;
background: rgba(0, 0, 0, 0.5);
border-radius: 4px;
color: white;
padding: 4px 8px;
opacity: 0.7;
white-space: nowrap;
}
.tooltip-measure {
opacity: 1;
font-weight: bold;
}
.tooltip-static {
background-color: #ffcc33;
color: black;
border: 1px solid white;
}
.tooltip-measure:before,
.tooltip-static:before {
border-top: 6px solid rgba(0, 0, 0, 0.5);
border-right: 6px solid transparent;
border-left: 6px solid transparent;
content: "";
position: absolute;
bottom: -6px;
margin-left: -7px;
left: 50%;
}
.tooltip-static:before {
border-top-color: #ffcc33;
}
.map {
height: 50%;
width: 70%;
}
</style>
</head>
<body>
<div id="map" class="map"></div>
<div id="info"> </div>
<div>
<label>Map or Arial picture: </label>
<select id="layer-select">
<option value="AerialWithLabels" selected>Arial picture</option>
<option value="osmmap">Map </option>
</select>
</div>
<script>
var source = new ol.source.Vector();
var vector = new ol.layer.Vector({
source: source,
style: new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.2)'
}),
stroke: new ol.style.Stroke({
color: '#ffcc33',
width: 2
}),
image: new ol.style.Circle({
radius: 7,
fill: new ol.style.Fill({
color: '#ffcc33'
})
})
})
});
/**
* Currently drawn feature.
* @type {ol.Feature}
*/
var sketch;
/**
* The help tooltip element.
* @type {Element}
*/
var helpTooltipElement;
/**
* Overlay to show the help messages.
* @type {ol.Overlay}
*/
var helpTooltip;
/**
* The measure tooltip element.
* @type {Element}
*/
var measureTooltipElement;
/**
* Overlay to show the measurement.
* @type {ol.Overlay}
*/
var measureTooltip;
/**
* Message to show when the user is drawing a polygon.
* @type {string}
*/
var continuePolygonMsg = 'Click to continue drawing the polygon';
/**
* Message to show when the user is drawing a line.
* @type {string}
*/
var continueLineMsg = 'Click to continue drawing the line';
/**
* Handle pointer move.
* @param {ol.MapBrowserEvent} evt The event.
*/
var pointerMoveHandler = function(evt) {
if (evt.dragging) {
return;
}
/** @type {string} */
var helpMsg = 'برای اندازه گیری کلیک کنید';
if (sketch) {
var geom = (sketch.getGeometry());
if (geom instanceof ol.geom.Polygon) {
helpMsg = continuePolygonMsg;
} else if (geom instanceof ol.geom.LineString) {
helpMsg = continueLineMsg;
}
}
helpTooltipElement.innerHTML = helpMsg;
helpTooltip.setPosition(evt.coordinate);
helpTooltipElement.classList.remove('hidden');
};
var styles = [
'AerialWithLabels',
'osmmap'
];
var layers = [];
var i, ii;
for (i = 0, ii = styles.length; i < ii-1; ++i) {
layers.push(new ol.layer.Tile({
visible: false,
preload: Infinity,
source: new ol.source.BingMaps({
key: 'Ar3HbeAWJ2BNWw49Jnce_gbrbyqiPSBFuci9N4942gLNyBZgfzFPYn0d4QvpH06G ',
imagerySet: styles[i]
// use maxZoom 19 to see stretched tiles instead of the BingMaps
// "no photos at this zoom level" tiles
// maxZoom: 19
})
}));
}
layers.push(new ol.layer.Tile({
visible: false,
preload: Infinity,
source: new ol.source.OSM({
imagerySet: styles[1]
// use maxZoom 19 to see stretched tiles instead of the BingMaps
// "no photos at this zoom level" tiles
// maxZoom: 19
})
}));
layers.push(vector);
// kml
var dragAndDropInteraction = new ol.interaction.DragAndDrop({
formatConstructors: [
ol.format.GPX,
ol.format.GeoJSON,
ol.format.IGC,
ol.format.KML,
ol.format.TopoJSON
]
});
//end kml
var map = new ol.Map({
layers: layers,
// Improve user experience by loading tiles while dragging/zooming. Will make
// zooming choppy on mobile or slow devices.
loadTilesWhileInteracting: true,
target: 'map',
view: new ol.View({
center: ol.proj.fromLonLat([51.39, 35.70]),
zoom: 10
}),
interactions:ol.interaction.defaultInteractions().extend([dragAndDropInteraction])
});
var select = document.getElementById('layer-select');
function onChange() {
var style = select.value;
for (var i = 0, ii = layers.length; i < ii; ++i) {
layers[i].setVisible(styles[i] === style);
}
}
select.addEventListener('change', onChange);
onChange();
map.on('pointermove', pointerMoveHandler);
map.getViewport().addEventListener('mouseout', function() {
helpTooltipElement.classList.add('hidden');
});
// Current selection
var sLayer = new ol.layer.Vector({
source: new ol.source.Vector(),
style: new ol.style.Style({
image: new ol.style.Circle({
radius: 5,
stroke: new ol.style.Stroke ({
color: 'rgb(255,165,0)',
width: 3
}),
fill: new ol.style.Fill({
color: 'rgba(255,165,0,.3)'
})
}),
stroke: new ol.style.Stroke ({
color: 'rgb(255,165,0)',
width: 3
}),
fill: new ol.style.Fill({
color: 'rgba(255,165,0,.3)'
})
})
});
map.addLayer(sLayer);
// Set the search control
var search = new ol.control.SearchNominatim (
{ //target: $(".options").get(0),
polygon: $("#polygon").prop("checked"),
position: true // Search, with priority to geo position
});
map.addControl (search);
// Select feature when click on the reference index
search.on('select', function(e)
{ // console.log(e);
sLayer.getSource().clear();
// Check if we get a geojson to describe the search
if (e.search.geojson) {
var format = new ol.format.GeoJSON();
var f = format.readFeature(e.search.geojson, { dataProjection: "EPSG:4326", featureProjection: map.getView().getProjection() });
sLayer.getSource().addFeature(f);
var view = map.getView();
var resolution = view.getResolutionForExtent(f.getGeometry().getExtent(), map.getSize());
var zoom = view.getZoomForResolution(resolution);
var center = ol.extent.getCenter(f.getGeometry().getExtent());
// redraw before zoom
setTimeout(function(){
view.animate({
center: center,
zoom: Math.min (zoom, 16)
});
}, 100);
}
else {
map.getView().animate({
center:e.coordinate,
zoom: Math.max (map.getView().getZoom(),16)
});
}
});
//kml
dragAndDropInteraction.on('addfeatures', function(event) {
var vectorSource = new ol.source.VectorSource({
features: event.features
});
map.addLayer(new ol.layer.VectorLayer({
source: vectorSource
}));
map.getView().fit(vectorSource.getExtent());
});
//
var displayFeatureInfo = function(pixel) {
var features = [];
map.forEachFeatureAtPixel(pixel, function(feature) {
features.push(feature);
});
if (features.length > 0) {
var info = [];
var i, ii;
for (i = 0, ii = features.length; i < ii; ++i) {
info.push(features[i].get('name'));
}
document.getElementById('info').innerHTML = info.join(', ') || ' ';
} else {
document.getElementById('info').innerHTML = ' ';
}
};
//
map.on('pointermove', function(evt) {
if (evt.dragging) {
return;
}
var pixel = map.getEventPixel(evt.originalEvent);
displayFeatureInfo(pixel);
});
map.on('click', function(evt) {
displayFeatureInfo(evt.pixel);
});
//end kml
</script>
</body>
</html>
答案 0 :(得分：1)
您的代码中有些错误，您已从模块更改为完整的构建语法
interactions:ol.interaction.defaultInteractions().extend([dragAndDropInteraction])
var vectorSource = new ol.source.VectorSource({
map.addLayer(new ol.layer.VectorLayer({
应该是
interactions:ol.interaction.defaults().extend([dragAndDropInteraction])
var vectorSource = new ol.source.Vector({
map.addLayer(new ol.layer.Vector({