ArcGisMapServerImageryProvider
来调用，但切片服务不能用此方法调用
代码如下
//加载arcgis 动态服务 var dylayer = new Cesium.ArcGisMapServerImageryProvider({url:"http://localhost:6080/arcgis/rest/services/test/test4526img/MapServer"}); viewer.imageryLayers.addImageryProvider(dylayer);