具有Java经验的人可以帮助我使用Java在这个地图上画一个圆圈或添加其他标记图标(带有弹出消息)吗?
<html>
<head>
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
</head>
<body>
<div id="mapdiv"></div>
<script>
map = new OpenLayers.Map("mapdiv");
map.addLayer(new OpenLayers.Layer.OSM());
var lonLat = new OpenLayers.LonLat( -78.6608, 35.7757 ) .transform(new OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
var zoom=11;
map.setCenter (lonLat, zoom);
</script>
</body>
</html>