arcgis 要素服务增删改查

两种方式：

第一种

要素服务的增删改操作,在ArcGIS API for JS中给我们提供了三个类用于要素的增Add,删Delete,改Update

添加draw和要素服务

//用于操作的要素图层，注意我们是操作的宿舍楼图层
                    var featureLayer = new FeatureLayer("http://localhost:6080/arcgis/rest/services/Test/ft/FeatureServer/1",
                         {
                            mode:FeatureLayer.MODE_SNAPSHOT,
                            outFields: ["*"]
                         });
                    //在添加要素时，利用Draw工具获得geometry对象
                    var d = new Draw(map, { showTooltips: true });
                    //要操作的graphic
                    var g;

   query("button").on("click",function(event){
                        //获得按钮的文本
                        var value=this.innerHTML; 
                        //根据文本绑定不同的事件
                        switch(value){
                            case "添加要素":
                                d.activate(Draw.POLYGON);
                                break;
                            case "删除要素":
                                //创建Graphic对象，删除OBJECTID为34的元素，
                                //因为OBJECTID是主键，所以只需要指定主键即可
                                g=new Graphic("","",{
                                    "OBJECTID":34
                                });
                                //创建删除对象
                                var de=new Delete({
                                    "featureLayer":featureLayer,
                                    "deletedGraphics":[g]
                                });
                                //执行删除结果
                                de.performRedo();
                                //刷新图层
                                layer.refresh();
                                break;
                            case "修改要素":
                                //用于修改要素的函数,查询更新为36的要素
                                updateFeature(36);
                                break;                          
                            case "查询要素":
                                //用于查询要素的函数，查询主键为36的要素
                                searchFeather(36);
                                break;
                        }
                    });

修改、更新：

var oldUpdateGrapgics;
var updateGrapgics;

var selectid = selectArray[0]["OBJECTID"];

var queryTask, query;
    queryTask = new esri.tasks.QueryTask(featureURL);
    //dojo.connect(queryTask, "onComplete", showResults);
    var queryWhere = "OBJECTID=" + selectid;
    //build query filter
    query = new esri.tasks.Query();
    query.returnGeometry = true;
    query.outFields = ["*"];
    query.where = queryWhere;
    queryTask.execute(query, queryUpdateResults);

    function queryUpdateResults(results) {
        var features = results.features;
        oldUpdateGrapgics = features[0];
        updateGrapgics = new esri.Graphic(oldUpdateGrapgics.toJson());
        //featureAttribution["OBJECTID"] = ;
        $("input[name='OBJECTID']").val(updateGrapgics.attributes["OBJECTID"]);
        $("input[name='ID']").val(updateGrapgics.attributes["ID"]);
        $("input[name='要素代码']").val(updateGrapgics.attributes["要素代码"]);
        $("input[name='图斑编号']").val(updateGrapgics.attributes["图斑编号"]);
        $("input[name='地类编码']").val(updateGrapgics.attributes["地类编码"]);
        $("input[name='城镇用地']").val(updateGrapgics.attributes["城镇用地"]);
    }

function saveUpdateClick() {
    require(["esri/map", "dojo/on",
            "esri/layers/FeatureLayer",
            "esri/graphic", "esri/dijit/editing/Add",
            "esri/dijit/editing/Delete", "esri/dijit/editing/Update", "esri/tasks/query", "dojo/json",
            "dojo/domReady!"
        ],
        function(Map, on, FeatureLayer, Graphic, Add, Delete, Update, Query, jsonUtil) {
            //console.log($("#attrForm").serialize());
            // attributes =$("#attrForm").serializeObject(); //将表单序列化为JSON对象   
            //console.log(attributes);
            // updateGrapgics.setAttributes(attributes);
            // editFeatureLayer.applyEdits(null, [updateGrapgics], null);
            updateGrapgics.attributes['要素代码'] = getValueOrNULL($("input[name='要素代码']").val());
            updateGrapgics.attributes['图斑编号'] = getValueOrNULL($("input[name='图斑编号']").val());            
            updateGrapgics.attributes['城镇用地'] = getValueOrNULL($("input[name='城镇用地']").val());

            var update = new Update({
                "featureLayer": editFeatureLayer,
                "postUpdatedGraphics": [updateGrapgics], //修改之后的要素
                "preUpdatedGraphics": [oldUpdateGrapgics] //修改之前的要素
            });

            update.performRedo();
            //刷新视图
            editFeatureLayer.refresh();
            alert("修改成功");
        });
}

删除

var selectid = selectArray[0].OBJECTID;
    var selectids = [];
    selectids.push(selectid);

    $("#table").bootstrapTable('remove', {
        field: 'OBJECTID',
        values: selectids
    });
    //queryFeaturesByWhere();
    var queryTask, query;
    queryTask = new esri.tasks.QueryTask(featureURL);
    //dojo.connect(queryTask, "onComplete", showResults);
    var queryWhere = "OBJECTID=" + selectid;
    //build query filter
    query = new esri.tasks.Query();
    query.returnGeometry = true;
    query.outFields = ["*"];
    query.where = queryWhere;
    queryTask.execute(query, deleteResults);

function deleteResults(results) {
    var gs = results.features;
    editFeatureLayer.applyEdits(null, null, gs, function(evt) {
        console.log(evt);
        // alert("删除成功");
    });
    // return features;
}

第二种：

FeatureLayer.applyEdits函数说明

applyEdits函数是FeatureLayer类中的一个方法，主要作用是修改featurelayer的要素，但仅对要素服务（feature service）

函数形式：applyEdits(adds?, updates?, deletes?, callback?, errback?)

返回类型：dojo.Deferred

参数表：

1）<Graphic[]> adds 可选项 要被添加到要素服务中的图层中的要素数组。新要素通常由Draw工具条创建。

2）<Graphic[]> updates 可选项 几何对象和属性有所改变的要素数组。要素必须有一个有效的OBJECTID。要素的几何对象通常由Edit工具条修改。属性使用Attribute Inspector修改。

3）<Graphic[]> deletes 可选项 待删除的要素数组，这些要素必须有有效的OBJECTID。

4）<Function> callback 可选项 当操作完成时本函数会被调用。传给本函数的参数和onEditsComplete事件中的一样。

5）<Function> callback 可选项 如果有错误发生将会返回一个错误对象。

例子：

//更新
require([
  "esri/layers/FeatureLayer", ... 
], function(FeatureLayer, ... ) {
  var firePerimeterFL = new FeatureLayer( ... );
  var targetGraphic = firePerimeterFL.getSelectedFeatures()[0].setGeometry(reshapedGeometry);
  firePerimeterFL.applyEdits(null, [targetGraphic], null);
  ...
});

//删除       
 function initSelectToolbar(evt) {
            var petroFieldsFL = evt.layers[0].layer;
 
            petroFieldsFL.on("dbl-click", function(evt) {          
                    event.stop(evt);
                    petroFieldsFL.applyEdits(null, null, [evt.graphic]);    
            });
 
        }