ArcGIS API for JavaScript加载百度地图历史路况切片

1.获取历史路况切片地址

通过F12随意互获取一条url

http://its.map.baidu.com:8002/traffic/TrafficTileService?level=12&x=791&y=295&time=1537268868766

time的值是时间戳，你可以根据需要转成自己需要的时间

2.写road.js

这里最坑爹的是，百度的历史路况切片竟然没有使用自己百度地图的切片规律，而是使用了谷歌的切片规律，真是让人大跌眼镜

define(["dojo/_base/declare", "esri/layers/TiledMapServiceLayer", "esri/geometry/Extent", "esri/SpatialReference", "esri/layers/TileInfo"],
    function (declare, TiledMapServiceLayer, Extent, SpatialReference, TileInfo) {
        return declare(TiledMapServiceLayer, {
            // 构造函数
            constructor: function (properties) {
                this.spatialReference = new SpatialReference({
                    wkid:102113
                });

                // 图层提供的起始显示范围以及整个图层的地理范围
                this.fullExtent = new Extent(-20037508.342787, -20037508.342787, 20037508.342787, 20037508.342787, this.spatialReference);
                this.initialExtent = new Extent(5916776.8, 1877209.3, 19242502.6, 7620381.8, this.spatialReference);
                // 图层提供的切片信息
                this.tileInfo = new TileInfo({
                    "rows": 256,
                    "cols": 256,
                    "compressionQuality": 0,
                    "origin": {
                        "x": -20037508.342787,
                        "y": 20037508.342787
                    },
                    "spatialReference": {
                        "wkid": 102113
                    },
                    "lods": [
                        { "level": 0, "resolution": 156543.033928, "scale": 591657527.591555 },
                        { "level": 1, "resolution": 78271.5169639999, "scale": 295828763.795777 },
                        { "level": 2, "resolution": 39135.7584820001, "scale": 147914381.897889 },
                        { "level": 3, "resolution": 19567.8792409999, "scale": 73957190.948944 },
                        { "level": 4, "resolution": 9783.93962049996, "scale": 36978595.474472 },
                        { "level": 5, "resolution": 4891.96981024998, "scale": 18489297.737236 },
                        { "level": 6, "resolution": 2445.98490512499, "scale": 9244648.868618 },
                        { "level": 7, "resolution": 1222.99245256249, "scale": 4622324.434309 },
                        { "level": 8, "resolution": 611.49622628138, "scale": 2311162.217155 },
                        { "level": 9, "resolution": 305.748113140558, "scale": 1155581.108577 },
                        { "level": 10, "resolution": 152.874056570411, "scale": 577790.554289 },
                        { "level": 11, "resolution": 76.4370282850732, "scale": 288895.277144 },
                        { "level": 12, "resolution": 38.2185141425366, "scale": 144447.638572 },
                        { "level": 13, "resolution": 19.1092570712683, "scale": 72223.819286 },
                        { "level": 14, "resolution": 9.55462853563415, "scale": 36111.909643 },
                        { "level": 15, "resolution": 4.77731426794937, "scale": 18055.954822 },
                        { "level": 16, "resolution": 2.38865713397468, "scale": 9027.977411 },
                        { "level": 17, "resolution": 1.19432856685505, "scale": 4513.988705 },
                        { "level": 18, "resolution": 0.597164283559817, "scale": 2256.994353 },
                        { "level": 19, "resolution": 0.298582141647617, "scale": 1128.497176 }
                    ]
                });

                // 设置图层的loaded属性，并触发onLoad事件
                this.loaded = true;
                this.onLoad(this);
            },

            getTileUrl: function (level, row, col) {
                var zoom = level - 1;
                var offsetX = Math.pow(2, zoom);
                var offsetY = offsetX - 1;
                var numX = col - offsetX;
                var numY = (-row) + offsetY;
                zoom = level + 1;
                var num = (col + row) % 8 + 1;
                var url = "http://its.map.baidu.com:8002/traffic/TrafficTileService?level="+zoom+"&x="+numX+"&y="+numY+"&time=1537261665762";
                return url;
            }
        });
    }
)

放到合适的地方，例如离线api下，新建bism文件夹下

3.主页代码

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>访问百度地图</title>
    <link rel="stylesheet" href="http://localhost/arcgis_js_api/library/3.17/3.17/esri/css/esri.css">
    <style>
        html, body, #map {
            padding:0;
            margin:0;
            height:100%;
            width:100%;
        }
    </style>
    <script src="http://localhost/arcgis_js_api/library/3.17/3.17/init.js"></script>
    <script type="text/javascript">
        var map;

        require([
            "esri/map",
            "bism/road",
            "dojo/domReady!"
        ], function (
            Map, road
        ) {
            var layer = new road();
            map = new Map("map", {
             logo: false,
             center: [107.9, 34.7],
             zoom: 4
        });
            map.addLayer(layer);
        });
    </script>
</head>
<body class="tundra">
    <div id="map">
    </div>
</body>
</html>

4.结果图，放大后还挺详细的