ArcGIS Server 动态地图服务Query 请求问题小结

本文主要是介绍ArcGIS Server 动态地图服务Query 请求问题小结，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

在ArcGIS Server中对于MapServer查询可调用rest服务接口执行，但是又可以分为以下几种可能：

测试类型

可以在服务器Query功能后台进行测试：
在这里插入图片描述
其他参数可自行填写，可测试GET及POST请求：

参数注意JSON格式等的正确性，在后台此界面可以验证服务的可用性及查询参数的正确性。

JS发送请求

1. GET请求

通用URL方式发送Get请求
请求格式中有些格式需要转义，例如‘’ 、 [ ]等符号，具体可以参考官网示例，或在上面说的query面板中查看GET请求成功的URL具体格式。

例如：

http://IP:6080/arcgis/rest/services/xxx/xxx/MapServer/0/query?where=&text=&objectIds=&time=&geometry=%7B%27rings%27%3A%5B%5B%5B103.526673%2C31.460492%2C0%5D%2C%5B103.434909%2C31.459358%2C0%5D%2C%5B103.474442%2C31.521872%2C0%5D%2C%5B103.526673%2C31.460492%2C0%5D%5D%5D%7D&geometryType=esriGeometryPolygon&inSR=&spatialRel=esriSpatialRelIntersects&distance=&units=esriSRUnit_Meter&relationParam=&outFields=&returnGeometry=true&returnTrueCurves=false&maxAllowableOffset=&geometryPrecision=&outSR=&havingClause=&returnIdsOnly=false&returnCountOnly=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&returnZ=false&returnM=false&gdbVersion=&historicMoment=&returnDistinctValues=false&resultOffset=&resultRecordCount=&returnExtentOnly=false&datumTransformation=&parameterValues=&rangeValues=&quantizationParameters=&featureEncoding=esriDefault&f=pjson

使用ArcGIS API发送请求
使用API中的query接口实现，代码参考：

<html><head><meta charset="utf-8" /><metaname="viewport"content="initial-scale=1,maximum-scale=1,user-scalable=no"/><title>Intro to ImageryLayer | Sample | ArcGIS API for JavaScript 4.23</title><linkrel="stylesheet"href="https://js.arcgis.com/4.23/esri/themes/light/main.css"/><script src="https://js.arcgis.com/4.23/"></script><style>html,body,#viewDiv {padding: 0;margin: 0;height: 100%;width: 100%;}</style><script>require(["esri/Map", "esri/views/MapView", "esri/rest/query", "esri/rest/query/executeQueryJSON","esri/layers/ImageryLayer"], (Map,MapView,query, executeQueryJSON,ImageryLayer) => {// url to the layer of interest to querylet queryUrl = "http://IP:6080/arcgis/rest/services/xxx/xxx/MapServer/0";// create the Query objectquery.where = "1=1";query.outSpatialReference = { wkid:4326 };query.outFields = '*';query.spatialRel = 'esriSpatialRelIntersects';query.geometryType = 'esriGeometryPolygon';query.inSR = 4326;query.outSR = 4326;query.returnGeometry = true;query.geometry = {type: "polygon",rings: [[[x,y,z],[x,y,z],[x,y,z],[x,y,z]]]};/********************* Create image layer********************/const layer = new ImageryLayer({url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/NLCDLandCover2001/ImageServer",format: "jpgpng" // server exports in either jpg or png format});/*************************** Add image layer to map*************************/const map = new Map({basemap: "gray-vector",layers: [layer]});const view = new MapView({container: "viewDiv",map: map,center: [103.6, 31.5],zoom: 4});// call the executeQueryJSON() methodconst symbol = {type: 'simple-fill',color: [255, 0, 0, 0.9],style: 'solid',outline: {color: '#1bbbb4',width: 2,},};executeQueryJSON.executeQueryJSON(queryUrl, query).then(function(results){// results.graphics contains the graphics returned from queryconsole.log(results)view.graphics.add(results.features[0]); //array view.graphics.addMany(results.features);results.features[0].symbol=symbol;    //view.goTo(results.features);})});</script></head><body><div id="viewDiv"></div></body>
</html>

使用ArcGIS API发送请求，如果节点过多可参考博客：
https://www.cnblogs.com/gis-luq/p/4184038.html

POST 请求发送请求
如果多边形查询面的节点数目过多，GET方式查询可能会受限，需要使用POST方式。

通用URL方式发送POST请求
这里发送的参数不能再写JSON格式发送，在后台可视化界面测试也可发现，POST请求需以FormData表单形式发送数据。
代码可参考测试代码：

<html><head><meta charset="utf-8" /><metaname="viewport"content="initial-scale=1,maximum-scale=1,user-scalable=no"/><title>Intro to ImageryLayer | Sample | ArcGIS API for JavaScript 4.23</title><script src="https://code.jquery.com/jquery-3.0.0.min.js"></script><style>html,body,#viewDiv {padding: 0;margin: 0;height: 100%;width: 100%;}</style><script>let url = 'http://IP:6080/arcgis/rest/services/XXX/XXX/MapServer/0/query'let data = {};data.where = "";data.geometry = "{'rings' : [[[103.526673,31.460492,0],[103.434909,31.459358,0],[103.474442,31.521872,0],[103.526673,31.460492,0]]]}";data.geometryType = "esriGeometryPolygon";data.spatialRel = "esriSpatialRelIntersects";data.units = "esriSRUnit_Meter";data.returnGeometry = true;data.f = "pjson";data.outFields = "*";console.log(data);$(document).ready(function(){$.ajax({type:'post',url:url,async:false, dataType:'jsonp',contentType: 'application/x-www-form-urlencoded; charset=UTF-8',data:data,success:function(resData){let tmpData=resData;alert("请求数据成功");console.log(tmpData);},error:function (jqXHR, textStatus, errorThrown) {console.log("连接数据的时候出现了："+textStatus);}})})</script></head><body><div id="viewDiv"></div></body>
</html>