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WFS - GetFeature

Example of making a WFS GetFeature request with a filter.

This example generates a GetFeature request which uses a PropertyIsEqualTo and a PropertyIsLike filter, and then posts the request to load the features that match the query.

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index.html<!DOCTYPE html>
<html lang="en">
  <head>
    <title>WFS - GetFeature</title>
    <!-- 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>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
    </style>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script src="index.js"></script>
  </body>
</html>
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index.jsimport 'ol/ol.css';
import Map from 'ol/Map';
import View from 'ol/View';
import {
  equalTo as equalToFilter,
  like as likeFilter,
  and as andFilter
} from 'ol/format/filter';
import {WFS, GeoJSON} from 'ol/format';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer';
import BingMaps from 'ol/source/BingMaps';
import VectorSource from 'ol/source/Vector';
import {Stroke, Style} from 'ol/style';


var vectorSource = new VectorSource();
var vector = new VectorLayer({
  source: vectorSource,
  style: new Style({
    stroke: new Stroke({
      color: 'rgba(0, 0, 255, 1.0)',
      width: 2
    })
  })
});

var raster = new TileLayer({
  source: new BingMaps({
    imagerySet: 'Aerial',
    key: 'Your Bing Maps Key from http://www.bingmapsportal.com/ here'
  })
});

var map = new Map({
  layers: [raster, vector],
  target: document.getElementById('map'),
  view: new View({
    center: [-8908887.277395891, 5381918.072437216],
    maxZoom: 19,
    zoom: 12
  })
});

// generate a GetFeature request
var featureRequest = new WFS().writeGetFeature({
  srsName: 'EPSG:3857',
  featureNS: 'http://openstreemap.org',
  featurePrefix: 'osm',
  featureTypes: ['water_areas'],
  outputFormat: 'application/json',
  filter: andFilter(
    likeFilter('name', 'Mississippi*'),
    equalToFilter('waterway', 'riverbank')
  )
});

// then post the request and add the received features to a layer
fetch('https://ahocevar.com/geoserver/wfs', {
  method: 'POST',
  body: new XMLSerializer().serializeToString(featureRequest)
}).then(function(response) {
  return response.json();
}).then(function(json) {
  var features = new GeoJSON().readFeatures(json);
  vectorSource.addFeatures(features);
  map.getView().fit(vectorSource.getExtent());
});
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package.json{
  "name": "vector-wfs-getfeature",
  "dependencies": {
    "ol": "6.1.1"
  },
  "devDependencies": {
    "parcel": "1.11.0"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --experimental-scope-hoisting --public-url . index.html"
  }
}