用openlayer加载arcgis发布的wmts图层

1. 通过wmts 确认发布的wmts是什么格式的。格分为4326，4490，还有可以是4490与4326的混合，归定义的是4490但用的是4320的分辨率。下图是4326格式与其对应的分辨率

下面是4490格式与其对应分辨率

2。对于4490格式，需要在网页里加载proj4js文件：  <script type=”text/javascript” src=”../libs/proj4js/2.5.0/proj4.js”></script>

3.   4490 projection定义：

openlayer2:   

 proj4.defs(“EPSG:4490″,”+proj=longlat +ellps=GRS80 +no_defs”); 
 var projection = new OpenLayers.Projection(‘EPSG:4490’);

openlayer 3:

    proj4.defs(“EPSG:4490”, “+proj=longlat +ellps=GRS80 +no_defs”);
    var projection = new ol.proj.get(‘EPSG:4490’);
    projection.setExtent([-180,-90,180,90]);

4. 代码实现，下面url中的{Style}与{TileMatrixSet}要被替换
openlayer2中用OpenLayers.Layer.XYZ，建图层：

url = “http://wmtsnetwf.com/services/QQ/WMTS/tile/1.0.0/CQMap_IMG/{Style}/{TileMatrixSet}/${z}/${y}/${z}”;

var wmtsXYZ2 = new OpenLayers.Layer.XYZ(
         “wmts”,
         url,
         {
        sphericalMercator: false,
        isBaseLayer: false,
        serverResolutions:titleresolutions4490
    });      

openlayer3中或ol.source.XYZ与ol.layer.Tile，建图层：

url = “http://wmtsnetwf.com/services/QQ/WMTS/tile/1.0.0/CQMap_IMG/{Style}/{TileMatrixSet}/{z}/{y}/{z}”;

var wmtsSouceXYZ = new ol.source.XYZ({
        attributions: “wmts”,
        maxZoom: 18,
        projection: projection,
        tileSize: [256, 256],
        //tileGrid: new ol.tilegrid.TileGrid({   //4490+4326
        //    tileSize:256,
        //    origin: vOrigin,
        //    resolutions: resolutions,
        //    matrixIds: matrixIds
        //}),
        tileUrlFunction: function (tileCoord) {

         var z = tileCoord[0]-1,  x =tileCoord[1], y = -tileCoord[2]-1; //4490
         // var z = tileCoord[0],x = tileCoord[1], y = -tileCoord[2]-1;   //4490+4326
          return url.replace(‘{z}’, (z).toString())
                            .replace(‘{x}’, (x).toString())
                            .replace(‘{y}’, (y).toString());
        }

      })

      var wmtsLayer = new ol.layer.Tile({
        opacity: 0.7,
        source:wmtsSouceXYZ
      });

转载自：https://blog.csdn.net/diaya/article/details/85342112