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OpenLayers添加点【php请求MySQL数据库返回GeoJSON数据】

php请求MySQL数据库返回GeoJSON数据的实现方法请参见：

http://www.cnblogs.com/marost/p/6234514.html

OpenLayers【v3.19.1-dist】添加GeoJSON数据源图层

<!doctype html>
<html lang="en">
  <head>
    <link rel='stylesheet' href='ol.css'>
    <style>
      #map {
        height: 100%;
        width: 100%;
      }
    </style>
    <title>OpenLayers 3 example</title>
    <script src="ol.js" type="text/javascript"></script>
  </head>
  <body>
    <h1>My Map</h1>
    <div id="map"></div>
    <script type="text/javascript">
      var raster = new ol.layer.Tile({
        source: new ol.source.OSM()
      });

      var vector = new ol.layer.Vector({
        source: new ol.source.Vector({
          url: 'http://yourip/getPosition.php',
          format: new ol.format.GeoJSON()
        })
      });

      var map = new ol.Map({
        layers: [raster, vector],
        target: 'map',
        view: new ol.View({
          center: [0, 0],
          zoom: 2
        })
      });
    </script>
  </body>
</html>

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原文地址：https://www.cnblogs.com/marost/p/6235379.html