ArcGIS 发布服务并在API4.x中调用实现最短路径
环境：Win10
软件版本：ArcGIS Desktop10.7 Enterprise10.7
目的：自己尝试发布一个服务,用来实现最短路径分析操作。
数据：某市路网图
参考：ArcGIS API for JavaScript 4.12 Demo——RouteTask
操作步骤
1.在ArcMap中添加矢量格式的路网数据。
2.为此数据建立网络数据集 注意：我的连通性选的是Any Vertex（任意节点），老师在讲网络分析的时候讲过，不细说了。
3.打开Network模块和Network工具条。
4.在工具条中点击New Route，此处可建立stop（停靠点）测试一下最短路径的效果。
5.File-->Share as-->Service,点击Publish a Service，之后确定服务的名称和存储文件夹。
6.进入Service Editor，在Capabilities选项卡中打开Network Analyst
7.点击分析，一般会有十几个警告，只要不报错就没事，之后发布。发布过程中会跳出一个确定复制数据的窗口，点击ok后继续发布。
8.发布成功会弹出窗口提示“服务已成功发布” 我们就可以在ArcGIS server Manager中查看。
9.在ArcGIS中找到GIS Servers在“发布者”中找到你发布的服务，右键服务属性，进入Service Editor
10.在Service Editor中打到Network Analyst选项卡，将REST URL复制下来。在浏览器中打开即可查看发布信息的属性内容。
我复制下来的REST URL是：
https://localhost:6443/arcgis/rest/services/NT/Net720/MapServer/NAServer
在API中调用
拿API4.12中的RouteTask为例（3版本API估计调用方式大差不离，因为4版本是未来的趋势，所以3版本自己看看吧）。
我们要调用的RouteTask url需要将上文中的REST URL做一定的调整方可调用成功。
需要调整的地方
- 将localhost改正为你的计算机机器名或IP，计算机的机器名可以在Server中站点-->计算机中找到
- 将上文中的REST URL中的MapServer删除
- 将上文中的REST URL中NAServer后加上你建立的最短路径图层的名字，若不做改动在10.7英文版中为“Route”,大小写没有影响。
所以，经过调整之后的URL为：
https://我的机器名:6443/arcgis/rest/services/NT/Net720/NAServer/Route
在此附上API4.12版本的RouteTask
（别想直接用，改改你的JS和CSS引用路径先！）
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta
name="viewport"
content="initial-scale=1,maximum-scale=1,user-scalable=no"
/>
<title>RouteTask - 4.12</title>
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
#paneDiv {
position: absolute;
top: 10px;
left: 62px;
padding: 0 12px 0 12px;
background-color: rgba(0, 0, 0, 0.5);
color: white;
}
</style>
<link
rel="stylesheet"
href="http://localhost/arcgis_js_api/library/4.12/esri/css/main.css"
/>
<script src="http://localhost/arcgis_js_api/library/4.12/init.js"></script>
<script>
//官方demo
require([
"esri/Map",
"esri/views/MapView",
"esri/Graphic",
"esri/layers/GraphicsLayer",
"esri/tasks/RouteTask",
"esri/tasks/support/RouteParameters",
"esri/tasks/support/FeatureSet",
// "esri/config"
], function(
Map,
MapView,
Graphic,
GraphicsLayer,
RouteTask,
RouteParameters,
FeatureSet
//esriConfig
) {
// esriConfig.portalUrl = "https://trail.arcgisonline.cn/portal";
// Point the URL to a valid route service that uses an
// ArcGIS Online hosted service proxy
var routeTask = new RouteTask({
url:
"https://desktop-7gg1hoi:6443/arcgis/rest/services/NT/Net720/NAServer/Route"
// "https://desktop-7gg1hoi:6443/arcgis/rest/services/NT/lcnet/NAServer/Route"
//GIS is not a simply tool but a way to exploring the unknown.
});
// The stops and route result will be stored in this layer
var routeLayer = new GraphicsLayer();
// Setup the route parameters
var routeParams = new RouteParameters({
stops: new FeatureSet(),
outSpatialReference: {
wkid: 3857
}
});
// Define the symbology used to display the stops
var stopSymbol = {
type: "simple-marker", // autocasts as new SimpleMarkerSymbol()
style: "cross",
size: 15,
outline: {
// autocasts as new SimpleLineSymbol()
width: 4
}
};
// Define the symbology used to display the route
var routeSymbol = {
type: "simple-line", // autocasts as SimpleLineSymbol()
color: [0, 0, 255, 0.5],
width: 5
};
var map = new Map({
basemap: "streets",
layers: [routeLayer] // Add the route layer to the map
});
var view = new MapView({
container: "viewDiv", // Reference to the scene div created in step 5
map: map, // Reference to the map object created before the scene
center: [115.976491,36.46233],
zoom: 14
});
// Adds a graphic when the user clicks the map. If 2 or more points exist, route is solved.
view.on("click", addStop);
function addStop(event) {
// Add a point at the location of the map click
var stop = new Graphic({
geometry: event.mapPoint,
symbol: stopSymbol
});
routeLayer.add(stop);
// Execute the route task if 2 or more stops are input
routeParams.stops.features.push(stop);
if (routeParams.stops.features.length >= 2) {
routeTask.solve(routeParams).then(showRoute);
}
}
// Adds the solved route to the map as a graphic
function showRoute(data) {
var routeResult = data.routeResults[0].route;
routeResult.symbol = routeSymbol;
routeLayer.add(routeResult);
}
});
</script>
</head>
<body>
<div id="viewDiv"></div>
<div id="paneDiv" class="esri-widget">
<div>
<p>
Click on the map to add stops to the route. The route from the last
stop to the newly added stop is calculated. If a stop is not
reachable, it is removed and the last valid point is set as the
starting point.
</p>
</div>
</div>
</body>
</html>
本文完。
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