在做地图开发的时候经常需要获取行政区划的边界，下面的网页可以满足如下功能，输入城市区划名，点击查看范围即可
<!DOCTYPE html><html><head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <style type="text/css"> body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";} #panel{ position:absolute; left:5px; top:5px; } #result{ background: #fff; padding:5px; } </style> <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script> <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=1XjLLEhZhQNUzd93EjU5nOGQ"></script> <title>添加行政区划</title></head><body> <div id="allmap"></div> <div id="panel"> <div> <input type="text" id="keyword" value="海淀区"/> <input type="button" value="查看范围" id="commitBtn"/> 边界经纬度坐标 <textarea id="pathStr"></textarea> 边界墨卡托坐标 &����,����lt;textarea id="pathMc"></textarea> </div> <div id="result"> </div> </div></body></html><script type="text/javascript"> // 百度地图API功能 var map = new BMap.Map("allmap"); map.centerAndZoom(new BMap.Point(116.403765, 39.914850), 5); map.enableScrollWheelZoom(); var mercatorProjection = map.getMapType().getProjection(); $("#commitBtn").bind('click', function(){ getBoundary($("#keyword").val()); }); function getBoundary(city){ var bdary = new BMap.Boundary(); bdary.get(city, function(rs){ //获取行政区域 map.clearOverlays(); //清除地图覆盖物 var count = rs.boundaries.length; //行政区域的点有多少个 if (count === 0) { alert('未能获取当前输入行政区域'); return ; } var pointArray = []; for (var i = 0; i < count; i++) { var ply = new BMap.Polygon(rs.boundaries[i], {strokeWeight: 2, strokeColor: "#ff0000"}); //建立多边形覆盖物 map.addOverlay(ply); //添加覆盖物 pointArray = pointArray.concat(ply.getPath()); } var pathStr = ""; var pathMc = ""; for (var i = 0; i < pointArray.length; i++) { var mc = mercatorProjection.lngLatToPoint(pointArray[i]); pathStr += pointArray[i].lng + "," + pointArray[i].lat + ";"; pathMc += mc.x + "," + mc.y + ";"; } $('#pathStr').html(pathStr); $('#pathMc').html(pathMc); var ply = new BMap.Polygon(pointArray , {strokeWeight: 2, strokeColor: "#ff0000"}); //建立多边形覆盖物 var bounds = ply.getBounds(); var ne = bounds.getNorthEast(); var sw = bounds.getSouthWest(); var neMc = mercatorProjection.lngLatToPoint(ne); var swMc = mercatorProjection.lngLatToPoint(sw); var str = "经纬度:左下角,右上角：" + sw.lng + "," + sw.lat + ";" + ne.lng + "," + ne.lat + "<br/>墨卡托坐标:左下角,右上角：" + swMc.x + "," + swMc.y + ";" + neMc.x + "," + neMc.y; $('#result').html(str); console.log(bounds); map.setViewport(pointArray); //调整视野 }); } //getBoundary('北京');</script>