Arcgis for js实现北京地铁的展示
来源：程序员人生 发布时间：2015-04-28 08:07:18 阅读次数：2502次
概述：
通过获得百度地铁图数据，将北京市地铁图在Arcgis for js中实现展现。
效果：
初始化效果
放大后
鼠标经过线路高亮并显示名称
点击显示站点信息
实现：
1、获得地铁数据
a、打开百度地铁图
在chrom中输入地址http://map.baidu.com/subways/index.html?c=beijing
b、获得网络资源
按下f12，切换到NetWork面板，刷新页面，会出现以下所示：
在新的面板中打开对应的链接，即为北京地铁的原始数据，格式为xml
c、将xml转换为json
利用网络xml2json转换工具将xml转换为json，工具地址为http://www.bejson.com/go.php?u=http://www.bejson.com/xml2json/
2、将站点和线路添加到地图上
将上述转换后的json定义为1个变量，单独存储为1个js文件。在map的load事件完成后将站点和线路添加到地图，代码以下：
map.on("load",function(){
var legendDiv = $("<div />").addClass("legend-box").appendTo($("#map"));
var titleDiv = $("<div />").addClass("tr-title").appendTo(legendDiv).html("图例");
var legendTab = $("<table />").appendTo(legendDiv).hide();
titleDiv.on("click",function(){
if(!legendTab.is(":hidden")){
legendTab.hide();
}
else{
legendTab.show();
}
});
var mulPt = new Multipoint();
var subLines = subData.sw.l;
for(var i= 0,ll =subLines.length;i<ll;i++){
var sms = new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_CIRCLE,
8,
new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color(color[i]),
3
),
new Color([255,255,255])
);
var pms = PictureMarkerSymbol('chg_stat.png', 12, 12);
var sls = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color(color[i]),
4
);
var trItem = $("<tr />").appendTo(legendTab);
var legendColor = $("<div />").addClass("legend-item-color").css("background",color[i]);
var legendText = $("<div />").addClass("legend-item-text").html(subLines[i].lid);
var tdColor = $("<td />").appendTo(trItem).append(legendColor);
var tdText = $("<td />").appendTo(trItem).append(legendText);
var stops = subLines[i].p;
var line = new Array();
for(var j= 0,sl =stops.length;j<sl;j++){
var scrPt = new esri.geometry.ScreenPoint(stops[j].x,stops[j].y);
var mapPt = map.toMap(scrPt);
mulPt.addPoint(mapPt);
line.push([mapPt.x,mapPt.y]);
if(stops[j].st==="true"){
var smb = sms;
var font = new esri.symbol.Font();
font.setSize("10px");
font.setFamily("微软雅黑");
if(stops[j].ex==="true"){
smb = pms;
font.setWeight("bold");
}
var gStop = new Graphic(mapPt,smb,stops[j]);
subwayStop.add(gStop);
var ts = new esri.symbol.TextSymbol(stops[j].lb);
ts.setFont(font);
ts.setOffset(0,5);
var gTxtStop = new Graphic(mapPt,ts);
subwayLabel.add(gTxtStop);
}
}
if(subLines[i].loop==="true"){
var scrPt = new esri.geometry.ScreenPoint(stops[0].x,stops[0].y);
var mapPt = map.toMap(scrPt);
line.push([mapPt.x,mapPt.y]);
}
var subLine = new Polyline({"paths":[line],
"spatialReference":{"wkid":4326}});
var gLine = new Graphic(subLine,sls,subLines[i]);
subwayLine.add(gLine);
}
var trItem = $("<tr />").appendTo(legendTab);
var legendColor = $("<img />").attr("src","chg_stat.png").attr("width","15px").attr("height","15px");
var legendText = $("<div />").addClass("legend-item-text").html("换乘站点");
var tdColor = $("<td />").appendTo(trItem).append(legendColor);
var tdText = $("<td />").appendTo(trItem).append(legendText);
map.setExtent(mulPt.getExtent().expand(1.5));
});
3、添加地图事件
添加鼠标经过和单机等事件，代码以下：
map.on("zoom-end",function(){
var level =map.getLevel();
if(level>0){
subwayLabel.show();
}
else{
subwayLabel.hide();
}
});
subwayStop.on("mouse-over",function(evt){
var scrPt = map.toScreen(evt.graphic.geometry);
var statName = evt.graphic.attributes.lb;
var stopName = $("<div />").attr("id","stopName")
.addClass("stat-name-box")
.html(statName)
.css("left",scrPt.x)
.css("top",scrPt.y+20)
.appendTo($("#map"));
map.setMapCursor("pointer");
});
subwayStop.on("mouse-out",function(evt){
$("#stopName").remove();
map.setMapCursor("default");
});
subwayStop.on("click",function(evt){
var stopName= evt.graphic.attributes.lb;
var lineName = evt.graphic.attributes.ln;
lineName = lineName.split(",");
var title = "<span style='font-weight: bold;'>"+stopName+"</span>";
var content="<span style='font-weight: bold;'>可乘坐</span>：<br />";
for(var i=0;i<lineName.length;i++){
var pathName = lineName[i].split("|")[1];
content = content+pathName+"<br />";
}
map.infoWindow.setTitle(title);
map.infoWindow.setContent(content);
map.infoWindow.show(evt.graphic.geometry);
$(".maximize").hide();
});
subwayLine.on("mouse-over",function(evt){
var scrPt = map.toScreen(evt.mapPoint);
var lineTitle = evt.graphic.attributes.lb;
var lineName = $("<div />").attr("id","lineName")
.addClass("stat-name-box")
.html(lineTitle)
.css("left",scrPt.x)
.css("top",scrPt.y+20)
.appendTo($("#map"));
map.setMapCursor("pointer");
evt.graphic.symbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color("#00ffff"),
4
);
subwayLine.redraw();
});
subwayLine.on("mouse-out",function(evt){
$("#lineName").remove();
map.setMapCursor("default");
evt.graphic.symbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color(color[evt.graphic.attributes.i⑴]),
4
);
subwayLine.redraw();
});
subwayLine.on("click",function(evt){
var geometry = evt.graphic.geometry;
var stops = evt.graphic.attributes.p;
var startStop =stops[0],endStop=stops[stops.length⑴];
var scrStart = new esri.geometry.ScreenPoint(startStop.x,startStop.y);
var scrEnd = new esri.geometry.ScreenPoint(endStop.x,endStop.y);
var startPt = map.toMap(scrStart);
var endPt = map.toMap(scrEnd);
var startName = startStop.lb, endName = endStop.lb;
var font = new esri.symbol.Font();
font.setSize("8pt");
font.setFamily("微软雅黑");
var startText = new esri.symbol.TextSymbol(startName),endText = new esri.symbol.TextSymbol(endName);
startText.setFont(font), endText.setFont(font);
startText.setColor(new dojo.Color([0,0,0,100])),endText.setColor(new dojo.Color([0,0,0,100]));
subwayLabel.add(new Graphic(startPt, startText));
subwayLabel.add(new Graphic(endPt, endText));
map.setExtent(geometry.getExtent().expand(1.8));
});
到此，基本功能已完成，完全代码以下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK" />
<title>北京地铁</title>
<link rel="stylesheet" href="http://localhost/arcgis_js_api/library/3.9/3.9/js/esri/css/esri.css">
<style>
html, body, #map{
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
.stat-name-box{
position: absolute;
left: 0px;
top: 0px;
z-index: 10;
border: rgb(139, 164, 220) 1px solid;
width: auto;
height: auto;
font:normal 11px "宋体",Arial;
color: rgb(0, 0, 0);
background: rgb(255, 255, 255);
box-shadow: rgba(0, 0, 0, 0.34902) 2px 2px 3px;
border-radius: 3px;
padding: 3px 5px;
}
.legend-box{
position: absolute;
top: 10px;
right: 10px;
z-index: 10;
border: rgb(139, 164, 220) 1px solid;
width: 130px;
height: auto;
color: rgb(0, 0, 0);
background: rgb(255, 255, 255);
box-shadow: rgba(0, 0, 0, 0.34902) 2px 2px 3px;
border-radius: 3px;
}
tr{
padding: 2px 8px;
}
.tr-title{
text-align: center;
font:bold 13px "宋体",Arial;
padding: 3px 0px;
background: rgb(139, 164, 220);
color: #ffffff;
border-radius: 3px;
}
.tr-title:hover{
cursor: pointer;
}
.legend-item-color{
width: 10px;
height: 10px;
float: left;
background: rgb(139, 164, 220);
margin-top: 5px;
}
.legend-item-text{
font:normal 8px "宋体",Arial;
padding: 3px 5px;
float: left;
}
</style>
<script src="http://localhost/arcgis_js_api/library/3.9/3.9/init.js"></script>
<script src="bj_sub_data.js"></script>
<script src="
jquery⑴.8.3.js"></script>
<script>
var map;
var color = ["#d92528","#166db2","#02a9bb","#b51c84","#bd9001","#ff9000","#17997d","#90ba78","#0696cb",
"#ffd600","#f55585","#714286","#00a9bc","#ca1e72","#ed9aac","#cd2c24","#eb5e19","#ac96bd"
];
require(["esri/map",
"esri/layers/ArcGISTiledMapServiceLayer",
"esri/layers/GraphicsLayer",
"esri/graphic",
"esri/geometry/Point",
"esri/geometry/Multipoint",
"esri/geometry/Polyline",
"esri/SpatialReference",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/PictureMarkerSymbol",
"esri/symbols/SimpleLineSymbol", //简单线符号
"dojo/_base/Color",
"dojo/domReady!"
],
function(Map,
Tiled,
GraphicsLayer,
Graphic,
Point,
Multipoint,
Polyline,
SpatialReference,
SimpleMarkerSymbol,
PictureMarkerSymbol,
SimpleLineSymbol,
Color) {
map = new Map("map",{
logo:false
});
var tiled = new Tiled("http://localhost:6080/arcgis/rest/services/BJ/MapServer",{"id":"tiled"});
map.addLayer(tiled);
tiled.hide();
var pt = new Point(116.88590597052463,40.37521501133166);
map.centerAndZoom(pt, 1);
var subwayStop = new GraphicsLayer({"id":"subwayStop"});
var subwayLine = new GraphicsLayer({"id":"subwayLine"});
var subwayLabel = new GraphicsLayer({"id":"subwayLabel"});
map.addLayer(subwayLine);
map.addLayer(subwayStop);
map.addLayer(subwayLabel);
subwayLabel.hide();
map.on("zoom-end",function(){
var level =map.getLevel();
if(level>0){
subwayLabel.show();
}
else{
subwayLabel.hide();
}
});
subwayStop.on("mouse-over",function(evt){
var scrPt = map.toScreen(evt.graphic.geometry);
var statName = evt.graphic.attributes.lb;
var stopName = $("<div />").attr("id","stopName")
.addClass("stat-name-box")
.html(statName)
.css("left",scrPt.x)
.css("top",scrPt.y+20)
.appendTo($("#map"));
map.setMapCursor("pointer");
});
subwayStop.on("mouse-out",function(evt){
$("#stopName").remove();
map.setMapCursor("default");
});
subwayStop.on("click",function(evt){
var stopName= evt.graphic.attributes.lb;
var lineName = evt.graphic.attributes.ln;
lineName = lineName.split(",");
var title = "<span style='font-weight: bold;'>"+stopName+"</span>";
var content="<span style='font-weight: bold;'>可乘坐</span>：<br />";
for(var i=0;i<lineName.length;i++){
var pathName = lineName[i].split("|")[1];
content = content+pathName+"<br />";
}
map.infoWindow.setTitle(title);
map.infoWindow.setContent(content);
map.infoWindow.show(evt.graphic.geometry);
$(".maximize").hide();
});
subwayLine.on("mouse-over",function(evt){
var scrPt = map.toScreen(evt.mapPoint);
var lineTitle = evt.graphic.attributes.lb;
var lineName = $("<div />").attr("id","lineName")
.addClass("stat-name-box")
.html(lineTitle)
.css("left",scrPt.x)
.css("top",scrPt.y+20)
.appendTo($("#map"));
map.setMapCursor("pointer");
evt.graphic.symbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color("#00ffff"),
4
);
subwayLine.redraw();
});
subwayLine.on("mouse-out",function(evt){
$("#lineName").remove();
map.setMapCursor("default");
evt.graphic.symbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color(color[evt.graphic.attributes.i⑴]),
4
);
subwayLine.redraw();
});
subwayLine.on("click",function(evt){
var geometry = evt.graphic.geometry;
var stops = evt.graphic.attributes.p;
var startStop =stops[0],endStop=stops[stops.length⑴];
var scrStart = new esri.geometry.ScreenPoint(startStop.x,startStop.y);
var scrEnd = new esri.geometry.ScreenPoint(endStop.x,endStop.y);
var startPt = map.toMap(scrStart);
var endPt = map.toMap(scrEnd);
var startName = startStop.lb, endName = endStop.lb;
var font = new esri.symbol.Font();
font.setSize("8pt");
font.setFamily("微软雅黑");
var startText = new esri.symbol.TextSymbol(startName),endText = new esri.symbol.TextSymbol(endName);
startText.setFont(font), endText.setFont(font);
startText.setColor(new dojo.Color([0,0,0,100])),endText.setColor(new dojo.Color([0,0,0,100]));
subwayLabel.add(new Graphic(startPt, startText));
subwayLabel.add(new Graphic(endPt, endText));
map.setExtent(geometry.getExtent().expand(1.8));
});
map.on("load",function(){
var legendDiv = $("<div />").addClass("legend-box").appendTo($("#map"));
var titleDiv = $("<div />").addClass("tr-title").appendTo(legendDiv).html("图例");
var legendTab = $("<table />").appendTo(legendDiv).hide();
titleDiv.on("click",function(){
if(!legendTab.is(":hidden")){
legendTab.hide();
}
else{
legendTab.show();
}
});
var mulPt = new Multipoint();
var subLines = subData.sw.l;
for(var i= 0,ll =subLines.length;i<ll;i++){
var sms = new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_CIRCLE,
8,
new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color(color[i]),
3
),
new Color([255,255,255])
);
var pms = PictureMarkerSymbol('chg_stat.png', 12, 12);
var sls = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color(color[i]),
4
);
var trItem = $("<tr />").appendTo(legendTab);
var legendColor = $("<div />").addClass("legend-item-color").css("background",color[i]);
var legendText = $("<div />").addClass("legend-item-text").html(subLines[i].lid);
var tdColor = $("<td />").appendTo(trItem).append(legendColor);
var tdText = $("<td />").appendTo(trItem).append(legendText);
var stops = subLines[i].p;
var line = new Array();
for(var j= 0,sl =stops.length;j<sl;j++){
var scrPt = new esri.geometry.ScreenPoint(stops[j].x,stops[j].y);
var mapPt = map.toMap(scrPt);
mulPt.addPoint(mapPt);
line.push([mapPt.x,mapPt.y]);
if(stops[j].st==="true"){
var smb = sms;
var font = new esri.symbol.Font();
font.setSize("10px");
font.setFamily("微软雅黑");
if(stops[j].ex==="true"){
smb = pms;
font.setWeight("bold");
}
var gStop = new Graphic(mapPt,smb,stops[j]);
subwayStop.add(gStop);
var ts = new esri.symbol.TextSymbol(stops[j].lb);
ts.setFont(font);
ts.setOffset(0,5);
var gTxtStop = new Graphic(mapPt,ts);
subwayLabel.add(gTxtStop);
}
}
if(subLines[i].loop==="true"){
var scrPt = new esri.geometry.ScreenPoint(stops[0].x,stops[0].y);
var mapPt = map.toMap(scrPt);
line.push([mapPt.x,mapPt.y]);
}
var subLine = new Polyline({"paths":[line],
"spatialReference":{"wkid":4326}});
var gLine = new Graphic(subLine,sls,subLines[i]);
subwayLine.add(gLine);
}
var trItem = $("<tr />").appendTo(legendTab);
var legendColor = $("<img />").attr("src","chg_stat.png").attr("width","15px").attr("height","15px");
var legendText = $("<div />").addClass("legend-item-text").html("换乘站点");
var tdColor = $("<td />").appendTo(trItem).append(legendColor);
var tdText = $("<td />").appendTo(trItem).append(legendText);
map.setExtent(mulPt.getExtent().expand(1.5));
});
});
</script>
</head>
<body>
<div id="map">
</div>
</body>
</html>
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