Openlayers3调用Geoserver的切片

一、查看Geoserver，是否已经把相应图层生成瓦片

      一般情况下，切好的瓦片放在C:\Program Files (x86)\GeoServer 2.11.1\data_dir\gwc\这个文件夹下，
 在这个目录中找我们生成瓦片的图层，例如我切了图层topp:states，就可以在
C:\Program Files (x86)\GeoServer 2.11.1\data_dir\gwc\topp_states文件夹下找到如下图所示的切片。

二、用Openlayers加载Geoserver中的切片

  var layer = new ol.layer.Tile({
        source: new ol.source.XYZ({
            url: 'http://www.google.cn/maps/vt?pb=!1m5!1m4!1i{z}!2i{x}!3i{y}!4i256!2m3!1e0!2sm!3i342009817!3m9!2szh-CN!3sCN!5e18!12m1!1e47!12m3!1e37!2m1!1ssmartmaps!4e0&token=32965'
        })
    });
    var vector = new ol.layer.Vector({
        source: new ol.source.Vector()
    });
    var view = new ol.View({
        center: [-93, 40],
        zoom: 7,
        projection: "EPSG:4326"
    });
    var tiled = new ol.layer.Tile({
        source: new ol.source.TileWMS({
            url: 'http://localhost:8081/geoserver/gwc/service/wms?',
            params: {
                'FORMAT': "image/png",
                'VERSION': '1.1.1',
                tiled: true,
                STYLES: '',
                LAYERS: 'topp:states',
                //tilesOrigin: -124.73142200000001 + "," + 24.955967
            }
        })
    });
    var map = new ol.Map({
        layers: [tiled],
        view: view,
        target: "map",
        logo: false
    });