IdentifyTask查询（附样例源码）

留言

效果图

1. 空间查询触发事件
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query("button").on("click", function (event) {
                 map.graphics.clear();
                 var value = this.innerHTML;
                 switch (value) {
                     case "点": {
                         toolbar.activate(Draw.POINT, {
                             showTooltips: true
                         })
                         break;
                     }
                     case "线": {
                         toolbar.activate(Draw.POLYLINE, {
                             showTooltips: true
                         })
                         break;
                     }
                     case "面": {
                         toolbar.activate(Draw.POLYGON, {
                             showTooltips: true
                         })
                         break;
                     }
                     case "X": {
                         toolbar.deactivate();
                         break;
                     }
                 }
             })
2. 绘图事件
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on(toolbar, "draw-complete", function (result) {
                toolbar.deactivate();
                var params = new IdentifyParameters();
                params.geometry = result.geometry;
                identifytask.execute(setParams(params), showIdentifyResult)
            });
3. 设置参数
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function setParams(params) {
                params.returnGeometry = true;
                params.tolerance = 3;
                params.layerIds = [0, 1];
                params.mapExtent = map.extent;
                params.layerOption = IdentifyParameters.LAYER_OPTION_ALL;
                return params;
            }
4. 显示
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function showIdentifyResult(res) {
                console.log(res)
                if (res.length <= 0) {
                    alert("未检测到")
                } else {
                    var features = [];
                    for (var i = 0; i < res.length; i++) {
                        //此例中res[0]是建筑图层,res[1]是行政区图层
                        features[i] = res[i].feature;
                        features[i].setInfoTemplate(new InfoTemplate({ "title": "", "content": "${*}" }));
                    }
                    //设置弹出窗口，map有自带infoWindow属性
                    map.infoWindow.setFeatures(features);
                    map.infoWindow.show(enevt.mapPoint);
                }
            }

源码