OpenLayers重新加载图层数据

OpenLayers重新加载图层数据

var now = Date.now(); var format = selectedLayerSource.getFormat(); var url = selectedLayerSource.getUrl(); url = url + '?t=' + now; //make AJAX request to source url $.ajax({ url: url, success: function (result) { //manually remove features from the source selectedLayerSource.forEachFeature(function (feature) { selectedLayerSource.removeFeature(feature); }); //create features from AJAX results var features = format.readFeatures(result, { featureProjection: 'EPSG:3857' }); //add features to the source selectedLayerSource.addFeatures(features); }, error: function (err) { alert("Could not load features from " + selectedLayerName + " at " + url + " error code: " + err.status); } });

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