openlayers3.0叠加天地图底图及注记后再叠加geoserverWMS服务
OpenLayers + 天地图矢量地图 + 天地图矢量注记 + Geoserver WMS服务
1：代码
<!DOCTYPE html>
<html lang=“en”>
<head>
<meta charset=“UTF-8”>
<meta name=“viewport” content=“width=device-width, initial-scale=1.0”>
<meta http-equiv=“X-UA-Compatible” content=“ie=edge”>
<title>openlayers</title>
<link rel=“stylesheet” href=“https://openlayers.org/en/v4.6.5/css/ol.css” type=“text/css”>
<script src=“https://openlayers.org/en/v4.6.5/build/ol.js” type=“text/javascript”></script>
<style>
.map {
position: absolute; width: 100%; height: 100%;
}
</style>
<script>
function onLoad() {
var layers = [
new ol.layer.Tile({
title: “天地图矢量经纬度底图”,
source: new ol.source.XYZ({
url: “http://t0.tianditu.com/DataServer?T=vec_c&x={x}&y={y}&l={z}”
})
})
];
var map = new ol.Map({
layers: layers,
target: ‘map’,
view: new ol.View({
projection: ‘EPSG:4326’,
center: [116.38,39.93],
zoom: 5
}),
controls: ol.control.defaults({
attributionOptions: {
collapsible: false
}
})
});
var tianditu_cva_c = new ol.layer.Tile({
title: “天地图经纬度矢量注记”,
source: new ol.source.XYZ({
url: ‘http://t0.tianditu.com/DataServer?T=cva_c&x={x}&y={y}&l={z}’
})
});
map.addLayer(tianditu_cva_c);
var geoserver_wms = new ol.layer.Tile({
source: new ol.source.TileWMS({
url: ‘http://192.9.104.68:8080/geoserver/test/wms’,
params: {
‘LAYERS’: ‘test:shengjie’, //此处可以是单个图层名称，也可以是图层组名称，或多个图层名称
‘TILED’: false
},
serverType: ‘geoserver’ //服务器类型
})
});
map.addLayer(geoserver_wms);
}
</script>
</head>
<body onload=‘onLoad()’>
<div id=‘map’></div>
</body>
</html>
2：效果展示
3：备注
1).基于OpenLayers前端框架，首先添加天地图矢量地图及矢量注记，然后再叠加geoserverWMS服务
2).考虑到图层的覆盖问题，应注意图层的叠加顺序，天地图矢量地图-天地图矢量注记-geoserverWMS服务
3).此处天地图瓦片及geoserverWMS服务坐标系为EPSG:4326与openlayers不同，所以此处效果图位置有偏移。
转载自：https://blog.csdn.net/qq_34870529/article/details/80323587
