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openlayer載入WMS圖層例子(LAYERS對應值填的是name屬性)

<!DOCTYPE html>
<html>
  <head>
    <title>Tiled WMS</title>
    <link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/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/v4.0.1/build/ol.js"></script>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script>
        var layers = [
          new ol.layer.Tile({
              source: new ol.source.XYZ({
                    url: 'http://t3.tianditu.com/DataServer?T=vec_c&x={x}&y={y}&l={z}',
                projection:"EPSG:4326"
              })
          }),
          new ol.layer.Tile({
              //extent: [117.909832, 24.427347, 118.346327, 24.792678],
              source: new ol.source.TileWMS({

                  url: 'http://192.168.202.63:6080/arcgis/services/XFZDFHDW/MapServer/WMSServer',
                  params: { 'LAYERS': '0', 'singleTile': true }
                 
              })
          })
        ];
        var map = new ol.Map({
            layers: layers,
            target: 'map',
            view: new ol.View({
                center: [118, 24.5],
                zoom: 12,
                projection: "EPSG:4326"
            })
        });
    </script>
  </body>
</html>