在ArcGIS API 中给我们提供了一个类叫做ArcGISDynamicMapServiceLayer利用这个类，我们可以获得发布的地图服务。调用动态地图服务一般只需要两步：
- 通过地图服务的URL创建一个
ArcGISDynamicMapServiceLayer对象 - 将动态地图服务的对象添加到地图容器中
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hello World</title>
<link rel="stylesheet" type="text/css" href="http://59.110.141.181/arcgis_js_api/library/3.17/3.17/dijit/themes/tundra/tundra.css" />
<link rel="stylesheet" type="text/css" href="http://59.110.141.181/arcgis_js_api/library/3.17/3.17/esri/css/esri.css" />
<script type="text/javascript" src="http://59.110.141.181/arcgis_js_api/library/3.17/3.17/init.js"></script>
<script>
require(["esri/map", "esri/layers/ArcGISDynamicMapServiceLayer",
"dojo/domReady!"],
function (Map, ArcGISDynamicMapServiceLayer) {
var map = new Map("mapDiv");
//利用url创建一个动态地图服务对象
var layer = new ArcGISDynamicMapServiceLayer("http://59.110.141.181:6080/arcgis/rest/services/SampleWorldCities/MapServer");
//将地图服务对象添加到地图容器中
map.addLayer(layer);
})
</script>
</head>
<body class="tundra">
<div id="mapDiv" style="width: 900px; height: 600px; border: 1px solid #000;"></div>
</body>
</html>
运行效果：
设置定义表达式
var layerDefinitions = []; layerDefinitions[0] = "POPULATION > 5000000"; layerDefinitions[5] = "AREA > 100000"; dynamicMapServiceLayer.setLayerDefinitions(layerDefinitions);
设置可见图层
require([
"esri/layers/ArcGISDynamicMapServiceLayer" ,"dojo/query", ...
], function(ArcGISDynamicMapServiceLayer, query, ... ) {
var layer = new ArcGISDynamicMapServiceLayer( ... );
var inputs = query(".list_item"), input;
visible = [];
for (var i=0, il=inputs.length; i< il; i++) {
if (inputs[i].checked) {
visible.push(inputs[i].id);
}
}
layer.setVisibleLayers(visible);
...
});
时间： 2024-08-09 10:43:39