[WebGIS] Demo3-使用高德地图Web服务|路线规划
文章目录
- 高德地图路径规划服务
- 使用
- 例子
- 目录介绍
- 主要代码
- HTML页面
- 高德地图服务amap-direction.js
- 坐标转换coordinateUtils.js
- 点、线、面符号统一管理symbol.js
- 加载天地图底图
- 结果
高德地图路径规划服务
http://lbs.amap.com/api/webservice/guide/api/direction
提供两个点之间的路线：步行、公交、驾车
使用
- 申请高德地图Web服务的Key
- 按申请的参数拼接URL
- 使用JS的AJAX异步请求HTTP服务
- 获取参数使用
例子
![[WebGIS] Demo3-使用高德地图Web服务|路线规划_第1张图片](http://img.e-com-net.com/image/info8/18712b29705a4d8f97ae1e0c29e4e046.jpg)
JS框架：jQuery（操作DOM，异步发送请求）
ArcGIS API for javascript：展示路径规划的结果
底图：天地图（坐标系4326）
项目为Hbuild工程文件
此例子为小生项目例子，还未进行封装与改善
下载地址 若没有积分请在评论处留邮箱（上传完积分就不准改了！看到第一时间发）
目录介绍
![[WebGIS] Demo3-使用高德地图Web服务|路线规划_第2张图片](http://img.e-com-net.com/image/info8/17641890b6c34ab899d118df4650745b.jpg)
主要代码
HTML页面
<html>
<head>
<meta charset="UTF-8">
<title>高德地图路线规划title>
<link rel="stylesheet" type="text/css" href="https://js.arcgis.com/3.21/esri/css/esri.css" />
<link rel="stylesheet" type="text/css" href="https://js.arcgis.com/3.21/dijit/themes/tundra/tundra.css"/>
<script type="text/javascript">
var dojoConfig = {
parseOnLoad: true,
packages: [{ //解释：require(["js/.."],function(){}) 中 js/ 即为 location的值
name: "js", //对应require引用包里的js
location: location.pathname.replace(/\/[^/]*$/, '') + '/js' //对应的路径
}]
};
script>
<script type="text/javascript" src="https://js.arcgis.com/3.21/init.js">script>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js">script>
<script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js">script>
<link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
head>
<body>
<div id="map" style="width:900px; height:580px; border:1px solid #000;">div>
<script>
var map;
var selectedSpotsBuffer_spotsMap = { //模拟项目数据
"1" : {
geometry : {
x : 118.13214548600001,
y : 24.424820321000027
},
attributes : {
id : 1,
name :"白石炮台遗址",
recommendtime:120,
total:76.16926103,
x:118.13214548600001,
y:24.424820321000027
}
},
"6" : {
geometry : {
x : 118.11964657700003,
y : 24.434867303000033
},
attributes : {
id : 6,
name :"启明寺",
recommendtime:90,
total:88.32278481,
x:118.11964657700003,
y:24.434867303000033
}
}
};
$(document).ready(function(){
$.getScript("js/tools/symbol.js",function () { //引入符号系统
initSymbol();
});
require(["esri/map", "js/tools/TDTLayer","js/tools/TDTAnnoLayer","esri/layers/GraphicsLayer"],
function (Map, TDTLayer,TDTAnnoLayer,GraphicsLayer) {
map = new Map("map", { //初始化底图
center: [118.15, 24.55],
zoom: 11,
logo : false //logo
});
var baselayer = new TDTLayer(); //加载天地图图层
map.addLayer(baselayer);
var annolayer = new TDTAnnoLayer();//加载天地图图层
map.addLayer(annolayer);
var direction = new GraphicsLayer({ //新建路线规划的图层 用来显示路线规划结果
id : "direction"
});
map.addLayer(direction);
$.getScript("js/tools/coordinateUtils.js",function(){ //加载坐标转换工具
$.getScript("js/tools/amap-direction.js",function(){ //加载高德地图路径规划
//两种调用方法
// walking("direction","白石炮台遗址->启明寺",selectedSpotsBuffer_spotsMap["1"]["geometry"],selectedSpotsBuffer_spotsMap["6"]["geometry"]);
transit("direction","白石炮台遗址->启明寺",{"origin" : selectedSpotsBuffer_spotsMap["1"]["geometry"],
"destination" : selectedSpotsBuffer_spotsMap["6"]["geometry"],
"city" : "厦门"
});
});
});
});
});
script>
body>
html>
高德地图服务amap-direction.js
/**
* @function 高德地图路径导航服务
* @description 依赖于coordinateUtils.js包
*/
var AMAP_SERVICE_KEY = "4fac3db************7db1c7"; //key 请自己申请
/**
* @function 步行
* @parma layerName 加载的图层名
* @parma _routeName 路线名称
* @param originGeometry,destinationGeometry起始点geometry
*/
var steps;
var routeName;
var layerName;
function walking(_layerName,_routeName,originGeometry,destinationGeometry) {
layerName = _layerName;
routeName = _routeName;
var origin = wgs84togcj02(originGeometry.x,originGeometry.y); //坐标系转换
var destination = wgs84togcj02(destinationGeometry.x,destinationGeometry.y);
var serviceUrl =
"http://restapi.amap.com/v3/direction/walking?output=JSON&origin="+origin+"&destination="+destination+"&key="+AMAP_SERVICE_KEY;
$.ajax({ //高德地图HTTP服务
type:"get",
url:serviceUrl,
async:true,
success : function(result){ //成功返回结果
result = eval(result); //解析JSON格式的字符串
steps = result.route.paths[0].steps; //取出步行数组
handleResult_walking(steps); //处理步行数组
}
});
}
/**
* @function 处理steps 步行数组
* @param {Object} result
*/
function handleResult_walking(steps) {
//因服务中所给路线的经纬度为字符串，所以我们将其转换成数组，并覆盖
$.each(steps, function(index,value) {
//把字符串变成 坐标数组，然后转换
var latAndLons = value.polyline.split(";");
var points = [];
$.each(latAndLons,function(index,value){
var point = value.split(","); //一个点的经纬度 [x,y]
$.each(point, function(index,value) {//[x,y]字符串转为float
point[index] -= 0;
});
point = gcj02towgs84(point[0],point[1]);//转换坐标
points.push(point);//放入集合
console.log(points);
});
value.polyline = points; //覆盖原来的字符串
console.log(value.polyline);
});
drawRoute_walking(routeName,steps); //画出解决方案
}
function drawRoute_walking(routeName,steps){
$.each(steps,function(index,value){
var lineName = routeName + " 第"+(index+1)+"步"; //步数名称
console.log(lineName);console.log(value);
drawLine_walking(lineName,value); //画线
});
}
function drawLine_walking(lineName,lineMap) {
require([
"esri/geometry/Polyline",
"esri/graphic",
"esri/InfoTemplate",
"esri/layers/GraphicsLayer"
], function(Polyline,Graphic,InfoTemplate,GraphicsLayer) {
var polylineJson = { //线对象参数JSON格式
"paths":[
lineMap.polyline
],
"spatialReference":{
"wkid":4326
}
};
var polyline = new Polyline(polylineJson); //创建线对象
console.log(polyline);
var attr = { //该地理实体的属性
name : lineName,
action : lineMap.action,
distance : lineMap.distance,
instruction : lineMap.instruction,
road :lineMap.road
};
//地理实体的信息窗口
var infoTemplate = new InfoTemplate("${name}", "方向：${action}
介绍：${instruction}
距离：${distance}米
路名：${road}");
//创建客户端图形
var graphic = new Graphic(polyline,symbolMap["line_default"],attr,infoTemplate);
//加载到地图上
map.getLayer(layerName).add(graphic);
});
}
/**
* @function 公交
* @parma layerName 加载的图层名
* @param routeName 线路名称
* @param paramsMap参数信息
origin lon,lat（经度,纬度），如117.500244, 40.417801 经纬度小数点不超过6位 必须
destination on,lat（经度,纬度），如117.500244, 40.417801 经纬度小数点不超过6位 必须
city 城市名 支持市内公交换乘/跨城公交的起点城市，规则：城市名称/citycode 必须
strategy 0：最快捷模式;1：最经济模式;2：最少换乘模式;3：最少步行模式;5：不乘地铁模式
nightflag 是否计算夜班车,1:是；0：否
date 根据出发日期筛选，格式：date=2014-3-19
time 根据出发时间筛选，格式：time=22:34
*/
var transitRoute; //{} 有origin、destination、distance、taxi_cost、transits乘车方案
function transit(_layerName,_routeName,paramsMap) {
layerName = _layerName;
routeName = _routeName;
paramsMap.origin = wgs84togcj02(paramsMap.origin.x,paramsMap.origin.y);
paramsMap.destination = wgs84togcj02(paramsMap.destination.x,paramsMap.destination.y);
var serviceUrl = "http://restapi.amap.com/v3/direction/transit/integrated?";
$.each(paramsMap, function(key,value) {
serviceUrl += key +"="+value+"&";
});
serviceUrl += "output=JSON&key="+AMAP_SERVICE_KEY;
console.log(serviceUrl);
$.ajax({
type:"get",
url:serviceUrl,
async:true,
success : function(result){
result = eval(result);
console.log(result);
transitRoute = result.route;
$.each(transitRoute.transits, function(index,value) { //transits [] 遍历乘车方案
//value {} 一种乘车方案 有cost duration nightflag walking_distance distance missed segments
var segments = value.segments; //[] 乘车方案分几步
$.each(segments, function(index,value) {
handleResult_walking(value.walking.steps);
handleResult_bus(value.bus.buslines);
});
});
}
});
}
function handleResult_bus(buslines) { //处理数据
$.each(buslines, function(index,value) {
//把字符串变成 坐标数组，然后转换
console.log(value.polyline);
var latAndLons = value.polyline.split(";");
var points = [];
$.each(latAndLons,function(index,value){
var point = value.split(","); //一个点的经纬度 [x,y]
$.each(point, function(index,value) {//[x,y]字符串转为float
point[index] -= 0;
});
point = gcj02towgs84(point[0],point[1]);//转换坐标
points.push(point);//放入集合
console.log(points);
});
value.polyline = points;
console.log(value.polyline);
});
drawRoute_bus(buslines); //画公交线
}
function drawRoute_bus(buslines) {
$.each(buslines,function(index,value){
var lineName = routeName + " 第"+(index+1)+"步 "+ value.name;
console.log(lineName);console.log(value);
drawLine_bus(lineName,value);
});
}
function drawLine_bus(lineName,lineMap) {
require([
"esri/geometry/Polyline",
"esri/graphic",
"esri/InfoTemplate"
], function(Polyline,Graphic,InfoTemplate) {
var polylineJson = {
"paths":[
lineMap.polyline
],
"spatialReference":{
"wkid":4326
}
};
var polyline = new Polyline(polylineJson);
console.log(polyline);
var attr = {
name : lineName,
distance : lineMap.distance,
type : lineMap.type,
departure_stop : lineMap.departure_stop.name,
arrival_stop : lineMap.arrival_stop.name
};
var infoTemplate = new InfoTemplate("${name}", "类型：${type}
起始站：${departure_stop}
下车站：${arrival_stop}
距离：${distance}米");
var graphic = new Graphic(polyline,symbolMap["line_default"],attr,infoTemplate);
map.getLayer(layerName).add(graphic);
});
}
坐标转换coordinateUtils.js
http://blog.csdn.net/summer_dew/article/details/77688210
点、线、面符号统一管理symbol.js
统一管理利于后期修改样式，不用在每个JS文件中找样式
也可以对样式方案进行扩展，用户可自行设置属于自己的一套样式
/**
* Created by passerQi on 2017/8/23.
* 说明：符号样式统一管理
*/
var symbolMap = {}; //存储符号系统的map
function initSymbol(){
require([
"esri/symbols/PictureMarkerSymbol",
"esri/symbols/SimpleLineSymbol", //线符号
"esri/symbols/SimpleMarkerSymbol", //点符号
"esri/symbols/SimpleFillSymbol", //面符号
], function(PictureMarkerSymbol,SimpleLineSymbol,SimpleMarkerSymbol,SimpleFillSymbol) {
//默认符号样式
symbolMap["line_default"] = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new dojo.Color([236, 176, 25]), 3);
symbolMap["point_default"] = new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_CIRCLE,10, symbolMap["default_line"], new dojo.Color([236, 176, 25]));
symbolMap["fill_default"] = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID, symbolMap["default_line"], new dojo.Color([236, 176, 25]));
//点
symbolMap["point_main_blue"] = new PictureMarkerSymbol('img/point_main_blue.png', 25, 25);
symbolMap["point_green"] = new PictureMarkerSymbol('img/point_green.png', 25, 25);
symbolMap["point_restaurant"] = new PictureMarkerSymbol('img/point_main_blue.png', 25, 25);
//面
for (var i=0; i<9; i++) {
if (i%3===0) {
symbolMap["fill_"+i] = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID, symbolMap["default_line"], new dojo.Color([236, 176, 50*i,0.2]));
} else if ( i%3===1) {
symbolMap["fill_"+i] = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID, symbolMap["default_line"], new dojo.Color([236, 50*i, 25,0.2]));
} else {
symbolMap["fill_"+i] = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID, symbolMap["default_line"], new dojo.Color([50*i, 176, 25,0.2]));
}
}
});
}
加载天地图底图
http://blog.csdn.net/summer_dew/article/details/77687688
结果