Question

如何查询某一个图层里面的数据

Answer 1

您好，如果想要使用sql查询可以参考范例：http://support.supermap.com.cn:8090/webgl/examples/webgl/editor.html#getFeatureBySQL

使用点击查询可以参考：http://support.supermap.com.cn:8090/webgl/examples/webgl/editor.html#S3MTiles

Comments

有这方面相关是学习视频嘛？这样看有点不太懂

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学习视频暂时没有

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featureResults资源里面查询的话怎么使用呢？带查询数据集那些分别表示什么意思呢，麻烦啦 谢谢

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var sqlParameter = {
                "datasetNames": ["二维数据:Building"],
                getFeatureMode: "SQL",
                queryParameter: {
                    attributeFilter: sqlStr
                }
            };
            var url = "http://www.supermapol.com/realspace/services/data-cbd/rest/data/featureResults.rjson?returnContent=true";
            var queryData = JSON.stringify(sqlParameter);

            $.ajax({
                type: "post",
                url: url,
                data: queryData,
                success: function (result) {
                    var resultObj = JSON.parse(result);
                    console.log(resultObj);
                    if (resultObj.featureCount > 0) {
                        onQueryComplete(resultObj.features);
                    }
                },
                error: function (msg) {
                    console.log(msg);
                },
                // complete: function () {
                //     console.log("complete");
                // }
            })

sql查询参照这个查询方式去写

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好 谢谢