写在前面的话：
1.百度地图是自己定义的坐标系统，wkid=102100.百度地图数据是加密的产物。下文将附上百度坐标与WGS84，谷歌等坐标系统转换方法（地理-地理），此方法并未亲测，据说准
2.百度地图可以直接加载经纬度坐标
3.百度地图如果加载的arcgis api中会出现坐标偏移，1.中已经解决了地理坐标转换，那么找到百度投影-地理坐标的转换方式，则arcgis就可以直接无偏加载了，网上很多方法，但是亲测不行。
4.天地图不是涉密数据，根据本文提供的类库,arcgis api for js可以直接加载。但是数据有略微的偏移
天地图的切片地图可以通过esri.layers.TiledMapServiceLayer来加载，在此将之进行了一定的封装，如下：
1、切片线划图——TDTLayer.js
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2、切片标注——TDTAnnoLayer.js
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封装好之后就可以在页面调用了，调用的时候需要导入这些自定义的图层，导入方式为：
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BDAnoLayer.js
[javascript]view plaincopy print? define(["dojo/_base/declare","esri/layers/tiled"],function(declare){returndeclare(esri.layers.TiledMapServiceLayer,{constructor:function(){this.spatialReference=newesri.SpatialReference({wkid:102100});this.initialExtent=(this.fullExtent=newesri.geometry.Extent(-7508.3427892,-7508.3427892,7508.3427892,7508.3427892,this.spatialReference));this.scale=[591657527.591555,295828763.795777,147914381.897889,73957190.948944,36978595.474472,18489297.737236,9244648.868618,4622324.434309,2311162.217155,1155581.108577,577790.554289,288895.277144,144447.638572,72223.819286,36111.9096437,18055.9548224,9027.977411,4513.988705,2256.994353,1128.497176];this.resolution=[156543.033928,78271.5169639999,39135.7584820001,19567.8792409999,9783.93962049996,4891.96981024998,2445.98490512499,1222.99245256249,611.49622628138,305.748113140558,152.874056570411,76.4370282850732,38.2185141425366,19.1092570712683,9.55462853563415,4.77731426794937,2.38865713397468,1.19432856685505,0.597164283559817,0.298582141647617];this.tileInfo=newesri.layers.TileInfo({"rows":256,"cols":256,"compressionQuality":90,"origin":{"x":-7508.3427892,"y":7508.3427892},"spatialReference":this.spatialReference,"lods":[{"level":0,"resolution":this.resolution[0],"scale":this.scale[0]},{"level":1,"resolution":this.resolution[1],"scale":this.scale[1]},{"level":2,"resolution":this.resolution[2],"scale":this.scale[2]},{"level":3,"resolution":this.resolution[3],"scale":this.scale[3]},{"level":4,"resolution":this.resolution[4],"scale":this.scale[4]},{"level":5,"resolution":this.resolution[5],"scale":this.scale[5]},{"level":6,"resolution":this.resolution[6],"scale":this.scale[6]},{"level":7,"resolution":this.resolution[7],"scale":this.scale[7]},{"level":8,"resolution":this.resolution[8],"scale":this.scale[8]},{"level":9,"resolution":this.resolution[9],"scale":this.scale[9]},{"level":10,"resolution":this.resolution[10],"scale":this.scale[10]},{"level":11,"resolution":this.resolution[11],"scale":this.scale[11]},{"level":12,"resolution":this.resolution[12],"scale":this.scale[12]},{"level":13,"resolution":this.resolution[13],"scale":this.scale[13]},{"level":14,"resolution":this.resolution[14],"scale":this.scale[14]},{"level":15,"resolution":this.resolution[15],"scale":this.scale[15]},{"level":16,"resolution":this.resolution[16],"scale":this.scale[16]},{"level":17,"resolution":this.resolution[17],"scale":this.scale[17]},{"level":18,"resolution":this.resolution[18],"scale":this.scale[18]},{"level":19,"resolution":this.resolution[19],"scale":this.scale[19]}]});this.loaded=true;this.onLoad(this);},getTileUrl:function(level,row,col){varzoom=level-1;varoffsetX=parseInt(Math.pow(2,zoom));varoffsetY=offsetX-1;varnumX=col-offsetX,numY=(-row)+offsetY;varnum=(col+row)%8+1;return"http://online"+num+"./tile/?qt=tile&x="+numX+"&y="+numY+"&z="+level+"&styles=sl&udt=1015";}});});
BDVecLayer.js
[javascript]view plaincopy print? define(["dojo/_base/declare","esri/layers/tiled"],function(declare){returndeclare(esri.layers.TiledMapServiceLayer,{constructor:function(){this.spatialReference=newesri.SpatialReference({wkid:102100});this.initialExtent=(this.fullExtent=newesri.geometry.Extent(-7508.3427892,-7508.3427892,7508.3427892,7508.3427892,this.spatialReference));this.scale=[591657527.591555,295828763.795777,147914381.897889,73957190.948944,36978595.474472,18489297.737236,9244648.868618,4622324.434309,2311162.217155,1155581.108577,577790.554289,288895.277144,144447.638572,72223.819286,36111.9096437,18055.9548224,9027.977411,4513.988705,2256.994353,1128.497176];this.resolution=[156543.033928,78271.5169639999,39135.7584820001,19567.8792409999,9783.93962049996,4891.96981024998,2445.98490512499,1222.99245256249,611.49622628138,305.748113140558,152.874056570411,76.4370282850732,38.2185141425366,19.1092570712683,9.55462853563415,4.77731426794937,2.38865713397468,1.19432856685505,0.597164283559817,0.298582141647617];this.tileInfo=newesri.layers.TileInfo({"rows":256,"cols":256,"compressionQuality":90,"origin":{"x":-7508.3427892,"y":7508.3427892},"spatialReference":this.spatialReference,"lods":[{"level":0,"resolution":this.resolution[0],"scale":this.scale[0]},{"level":1,"resolution":this.resolution[1],"scale":this.scale[1]},{"level":2,"resolution":this.resolution[2],"scale":this.scale[2]},{"level":3,"resolution":this.resolution[3],"scale":this.scale[3]},{"level":4,"resolution":this.resolution[4],"scale":this.scale[4]},{"level":5,"resolution":this.resolution[5],"scale":this.scale[5]},{"level":6,"resolution":this.resolution[6],"scale":this.scale[6]},{"level":7,"resolution":this.resolution[7],"scale":this.scale[7]},{"level":8,"resolution":this.resolution[8],"scale":this.scale[8]},{"level":9,"resolution":this.resolution[9],"scale":this.scale[9]},{"level":10,"resolution":this.resolution[10],"scale":this.scale[10]},{"level":11,"resolution":this.resolution[11],"scale":this.scale[11]},{"level":12,"resolution":this.resolution[12],"scale":this.scale[12]},{"level":13,"resolution":this.resolution[13],"scale":this.scale[13]},{"level":14,"resolution":this.resolution[14],"scale":this.scale[14]},{"level":15,"resolution":this.resolution[15],"scale":this.scale[15]},{"level":16,"resolution":this.resolution[16],"scale":this.scale[16]},{"level":17,"resolution":this.resolution[17],"scale":this.scale[17]},{"level":18,"resolution":this.resolution[18],"scale":this.scale[18]},{"level":19,"resolution":this.resolution[19],"scale":this.scale[19]}]});this.loaded=true;this.onLoad(this);},getTileUrl:function(level,row,col){varzoom=level-1;varoffsetX=parseInt(Math.pow(2,zoom));varoffsetY=offsetX-1;varnumX=col-offsetX,numY=(-row)+offsetY;varnum=(col+row)%8+1;return"http://online"+num+"./tile/?qt=tile&x="+numX+"&y="+numY+"&z="+level+"&styles=pl&scaler=1&udt=1103";}});});
BDimgLayer.js
[javascript]view plain copy print?define(["dojo/_base/declare","esri/layers/tiled"],function(declare){returndeclare(esri.layers.TiledMapServiceLayer,{constructor:function(){this.spatialReference=newesri.SpatialReference({wkid:102100});this.initialExtent=(this.fullExtent=newesri.geometry.Extent(-7508.3427892,-7508.3427892,7508.3427892,7508.3427892,this.spatialReference));this.scale=[591657527.591555,295828763.795777,147914381.897889,73957190.948944,36978595.474472,18489297.737236,9244648.868618,4622324.434309,2311162.217155,1155581.108577,577790.554289,288895.277144,144447.638572,72223.819286,36111.9096437,18055.9548224,9027.977411,4513.988705,2256.994353,1128.497176];this.resolution=[156543.033928,78271.5169639999,39135.7584820001,19567.8792409999,9783.93962049996,4891.96981024998,2445.98490512499,1222.99245256249,611.49622628138,305.748113140558,152.874056570411,76.4370282850732,38.2185141425366,19.1092570712683,9.55462853563415,4.77731426794937,2.38865713397468,1.19432856685505,0.597164283559817,0.298582141647617];this.tileInfo=newesri.layers.TileInfo({"rows":256,"cols":256,"compressionQuality":90,"origin":{"x":-7508.3427892,"y":7508.3427892},"spatialReference":this.spatialReference,"lods":[{"level":0,"resolution":this.resolution[0],"scale":this.scale[0]},{"level":1,"resolution":this.resolution[1],"scale":this.scale[1]},{"level":2,"resolution":this.resolution[2],"scale":this.scale[2]},{"level":3,"resolution":this.resolution[3],"scale":this.scale[3]},{"level":4,"resolution":this.resolution[4],"scale":this.scale[4]},{"level":5,"resolution":this.resolution[5],"scale":this.scale[5]},{"level":6,"resolution":this.resolution[6],"scale":this.scale[6]},{"level":7,"resolution":this.resolution[7],"scale":this.scale[7]},{"level":8,"resolution":this.resolution[8],"scale":this.scale[8]},{"level":9,"resolution":this.resolution[9],"scale":this.scale[9]},{"level":10,"resolution":this.resolution[10],"scale":this.scale[10]},{"level":11,"resolution":this.resolution[11],"scale":this.scale[11]},{"level":12,"resolution":this.resolution[12],"scale":this.scale[12]},{"level":13,"resolution":this.resolution[13],"scale":this.scale[13]},{"level":14,"resolution":this.resolution[14],"scale":this.scale[14]},{"level":15,"resolution":this.resolution[15],"scale":this.scale[15]},{"level":16,"resolution":this.resolution[16],"scale":this.scale[16]},{"level":17,"resolution":this.resolution[17],"scale":this.scale[17]},{"level":18,"resolution":this.resolution[18],"scale":this.scale[18]},{"level":19,"resolution":this.resolution[19],"scale":this.scale[19]}]});this.loaded=true;this.onLoad(this);},getTileUrl:function(level,row,col){varzoom=level-1;varoffsetX=parseInt(Math.pow(2,zoom));varoffsetY=offsetX-1;varnumX=col-offsetX,numY=(-row)+offsetY;varnum=(col+row)%8+1;return"http://shangetu"+num+"./it/u=x="+numX+";y="+numY+";z="+level+";v=009;type=sate&fm=46&udt=1015";}});}); ? <!DOCTYPEhtml><html><head><metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/><metaname="viewport"content="initial-scale=1.0,user-scalable=no"/><styletype="text/css">body,html,#allmap{width:100%;height:100%;overflow:hidden;margin:0;font-family:"微软雅黑";}</style><scripttype="text/javascript"src="http://api./api?v=2.0&ak=你的秘钥"></script><title>地图展示</title></head><body><divid="allmap"></div></body></html><scripttype="text/javascript">//百度地图API功能varmap=newBMap.Map("allmap");//创建Map实例map.centerAndZoom(newBMap.Point(116.404,39.915),5);//初始化地图,设置中心点坐标和地图级别map.addControl(newBMap.MapTypeControl());//添加地图类型控件map.setCurrentCity("北京");//设置地图显示的城市此项是必须设置的map.enableScrollWheelZoom(true);//开启鼠标滚轮缩放</script>
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