arcgis api 3.x for js 入門開發系列十九圖層在線編輯

前言

關於本篇功能實現用到的 api 涉及類看不懂的，請參照 esri 官網的 arcgis api 3.x for js：esri 官網 api，里面詳細的介紹 arcgis api 3.x 各個類的介紹，還有就是在線例子：esri 官網在線例子，這個也是學習 arcgis api 3.x 的好素材。

本篇主要講述的是利用 arcgis api 3.x 實現圖層在線編輯功能模塊，效果圖如下：

 

實現思路

• arcgis serve r發布的 FeatureServer 服務提供的圖層在線編輯能力
  
• 實現的在線編輯（增刪改），主要是通過前端 ajax 請求后台 FeatureServer 服務來實現的

1. http://120.199.78.138:6080/arcgis/rest/services/dlsde/FeatureServer/0/updateFeatures

public void ProcessRequest (HttpContext context) {
string featureserverurl = context.Request.Params["featureserverurl"];
string features = context.Request.Params["features"];
string param = "features=" + features + "&f=json";
string url = featureserverurl + "/updateFeatures";
string ret = PostDataToUrl(param, url, "application/x-www-form-urlencoded");
 
context.Response.Write(ret);
}

1. http://120.199.78.138:6080/arcgis/rest/services/dlsde/FeatureServer/0/addFeatures

public void ProcessRequest (HttpContext context) {
string featureserverurl = context.Request.Params["featureserverurl"];
string features = context.Request.Params["features"];
string param = "features=" + features + "&f=json";
string url = featureserverurl + "/addFeatures";
string ret = PostDataToUrl(param, url, "application/x-www-form-urlencoded");
 
context.Response.Write(ret);
}

1. http://120.199.78.138:6080/arcgis/rest/services/dlsde/FeatureServer/0/deleteFeatures

public void ProcessRequest (HttpContext context) {
string featureserverurl = context.Request.Params["featureserverurl"];
string id = context.Request.Params["OBJECTID"];
string param = "where=OBJECTID=" + id + "&f=json";
string url = featureserverurl + "/deleteFeatures";
string ret = PostDataToUrl(param, url, "application/x-www-form-urlencoded");
 
context.Response.Write(ret);
context.Response.End();
}

• 前端 ajax 請求

更多的詳情見：GIS之家小專欄

對本專欄感興趣的話，可以關注一波