本文主要叙说了百度地图的两种用法:
1 在页面上直接调用百度地图API,显示地图
2 使用Echart框架可视化加载百度地图API
这两种使用方式,都举例说明,便于理解
一 在页面上直接使用百度地图API
首先申请百度地图JavaScript AP ak,这个ak可以理解我一种身份验证,调用百度地图必须有ak才能调用。百度地图API官网地址
下例中调用百度地图API初始化一个地图,并定位到当前城市,直接上代码:
- 1首先引用百度地图API js
-
2添加一个div容器,用于地图的渲染位置
- 3写代码实例化地图,获取当前位置并让地图定位到当前位置
var map = new BMap.Map("allmap");
map.enableScrollWheelZoom();
map.enableInertialDragging();
map.enableContinuousZoom();
map.addControl(new BMap.NavigationControl());//平移缩放控件
map.addControl(new BMap.ScaleControl()); //比例尺
map.addControl(new BMap.OverviewMapControl()); //缩略地图
map.addControl(new BMap.MapTypeControl()); //地图类型
var geolocation = new BMap.Geolocation();//定位
geolocation.getCurrentPosition(function(r){
if(this.getStatus() == BMAP_STATUS_SUCCESS){
var mk = new BMap.Marker(r.point);
map.addOverlay(mk);
map.panTo(r.point);
InitMAP(r.point.lng,r.point.lat)
alert('您的位置:'+r.point.lng+','+r.point.lat);
}
else {
alert('failed'+this.getStatus());
InitMAP(116.331398,39.897445)
}
});
function InitMAP(X,Y){
var point = new BMap.Point(X,Y);//var point = new BMap.Point(116.331398,39.897445);
map.centerAndZoom(point,12);
}
二 使用Echart框架可视化加载百度地图API
同上例使用之前也要申请百度地图JavaScript AP ak,无论什么方式ak是必须条件
- 1 首先引用百度地图API .Echart和Echart百度地图扩展js
environment是我的后台环境配置,不使用.net core框架的直接去掉
- 2 添加一个div容器,用于地图的渲染位置
-3
GHJ();
//初始化定位
var geolocation = new BMap.Geolocation();
//获取定位信息
geolocation.getCurrentPosition(function (r) {
if (this.getStatus() == BMAP_STATUS_SUCCESS) {
var city = r.address.city.substring(0, r.address.city.length - 1);
// r.address.city.Substring(0, r.address.city.Length - 1);
InsertAddress(city , r.point.lng, r.point.lat) //r.point.lng
}
else {
console.log('failed 你的位置未知' + this.getStatus()); //alert('failed 你的位置未知' + this.getStatus());
}
});
//初始化地图
function GHJ() {
var request = {};
request.type = 'GET';
request.url = '/Address/TrySelectALLCompetence';
request.data = "";
request.datatype = "json";
// request.Ticket = '@ViewData["Ticket"]';
request.success = function (result) {
var res = JSON.parse(result);
data = [];
for (var i = 0; i < res.length; i++) {
var s = {};
s.name = res[i].Name;
s.value = res[i].Count;
data.push(s);
s = null;
}
option = {
title: {
textStyle: {
color: '#fff'
},
subtextStyle: {
color: '#fff'
},
text: '系统登录分布地图',
subtext: '作者 凌云木',
sublink: 'https://www.jianshu.com/u/79758fa3d8b0',
left: 'center'
},
tooltip: {
trigger: 'item'
},
legend: {
orient: 'vertical',
zlevel: 2,
//top: 45,
right: 20,
data: ['累计', 'Top5']
},
bmap: {
// 百度地图中心经纬度
center: [104.114129, 37.550339],
// 百度地图缩放
zoom: 5,
type: 'map',
//mapType: 'china',
//selectedMode: 'multiple',
//是否开启拖拽缩放,可以只设置 'scale' 或者 'move'
roam: true,
//百度地图的自定义样式
mapStyle: {
styleJson: [
{
"featureType": "water",
"elementType": "all",
"stylers": {
"color": "#72b8fe"
}
},
{
"featureType": "road",
"elementType": "geometry.fill",
"stylers": {
"color": "#ffffff"
}
},
{
"featureType": "road",
"elementType": "geometry.stroke",
"stylers": {
"color": "#bababa"
}
},
{
"featureType": "road",
"elementType": "labels.text.fill",
"stylers": {
"color": "#767676"
}
},
{
"featureType": "road",
"elementType": "labels.text.stroke",
"stylers": {
"color": "#ffffff"
}
},
{
"featureType": "land",
"elementType": "all",
"stylers": {
"color": "#b8cb93"
}
}
]
}
},
series: [
{
name: '累计',
type: 'scatter',//散点类型
coordinateSystem: 'bmap',
data: convertData(data),
symbolSize: function (val) {
return val[2] / 10;
},
label: {
normal: {
formatter: '{b}{c}',
position: 'right',
show: false
},
emphasis: {
show: false
}
},
tooltip: {
formatter: function (param) {
return param.name + '已有' + param.value[2] + '人登录';
}
},
itemStyle: {
normal: {
color: '#f4e925'
}
}
},
{
name: 'Top5',
type: 'effectScatter',//散点(气泡)图
coordinateSystem: 'bmap',
data: convertData(data.sort(function (a, b) {
return b.value - a.value;//按照值的大小排序,并选择前五项
}).slice(0, 6)),
symbolSize: function (val) {
return val[2] / 10;
},
showEffectOn: 'render',//配置何时显示特效。
rippleEffect: {//涟漪特效相关配置。
brushType: 'stroke'
},
hoverAnimation: true,
label: {
normal: {
formatter: '{b}{c}',
position: 'right',
show: false
},
emphasis: {
show: false
}
},
tooltip: {
formatter: function (param) {
return ' 【TOP5】' + param.name + '已有' + param.value[2] + '人登录';
}
},
itemStyle: {
normal: {
color: 'red',
shadowBlur: 10,
shadowColor: '#1334'
}
},
zlevel: 1
}
]
};
var mapBox = document.getElementById('map');
var w = document.documentElement.clientWidth;
var h = document.documentElement.clientHeight;
mapBox.style.width = w - 200 + 'px';
mapBox.style.height = h - 200 + 'px';
var myChart = echarts.init(document.getElementById('map'));
myChart.setOption(option);
//console.log(data);
}
ajax(request);
};
//插入当前登录用户的位置信息
function InsertAddress(Name, Lng, Lat) {
var params = {};
params.Name =Name
params.Lng = Lng;
params.Lat = Lat;
var request = {};
request.type = 'POST';
request.url = '/Address/TryUpdateAddress'//TryUpdateAddress;
request.data = params;
request.datatype = "json";
request.success = function (result) {
var res = JSON.parse(result);
if (res.IsSuccess == 1) {
//layer.msg(result.Message, { icon: 1 });
console.log("位置信息更新成功");
}
else {
//layer.msg(res.Message, { icon: 2 });
console.log("位置信息更新失败");
}
};
ajax(request);
param = null;
}
var geoCoordMap = {
'海门': [121.15, 31.89],
'鄂尔多斯': [109.781327, 39.608266],
'招远': [120.38, 37.35],
'舟山': [122.207216, 29.985295],
'齐齐哈尔': [123.97, 47.33],
'盐城': [120.13, 33.38],
'赤峰': [118.87, 42.28],
'青岛': [120.33, 36.07],
'乳山': [121.52, 36.89],
'金昌': [102.188043, 38.520089],
'泉州': [118.58, 24.93],
'莱西': [120.53, 36.86],
'日照': [119.46, 35.42],
'胶南': [119.97, 35.88],
'南通': [121.05, 32.08],
'拉萨': [91.11, 29.97],
'云浮': [112.02, 22.93],
'梅州': [116.1, 24.55],
'文登': [122.05, 37.2],
'上海': [121.48, 31.22],
'攀枝花': [101.718637, 26.582347],
'威海': [122.1, 37.5],
'承德': [117.93, 40.97],
'厦门': [118.1, 24.46],
'汕尾': [115.375279, 22.786211],
'潮州': [116.63, 23.68],
'丹东': [124.37, 40.13],
'太仓': [121.1, 31.45],
'曲靖': [103.79, 25.51],
'烟台': [121.39, 37.52],
'福州': [119.3, 26.08],
'瓦房店': [121.979603, 39.627114],
'即墨': [120.45, 36.38],
'抚顺': [123.97, 41.97],
'玉溪': [102.52, 24.35],
'张家口': [114.87, 40.82],
'阳泉': [113.57, 37.85],
'莱州': [119.942327, 37.177017],
'湖州': [120.1, 30.86],
'汕头': [116.69, 23.39],
'昆山': [120.95, 31.39],
'宁波': [121.56, 29.86],
'湛江': [110.359377, 21.270708],
'揭阳': [116.35, 23.55],
'荣成': [122.41, 37.16],
'连云港': [119.16, 34.59],
'葫芦岛': [120.836932, 40.711052],
'常熟': [120.74, 31.64],
'东莞': [113.75, 23.04],
'河源': [114.68, 23.73],
'淮安': [119.15, 33.5],
'泰州': [119.9, 32.49],
'南宁': [108.33, 22.84],
'营口': [122.18, 40.65],
'惠州': [114.4, 23.09],
'江阴': [120.26, 31.91],
'蓬莱': [120.75, 37.8],
'韶关': [113.62, 24.84],
'嘉峪关': [98.289152, 39.77313],
'广州': [113.23, 23.16],
'延安': [109.47, 36.6],
'太原': [112.53, 37.87],
'清远': [113.01, 23.7],
'中山': [113.38, 22.52],
'昆明': [102.73, 25.04],
'寿光': [118.73, 36.86],
'盘锦': [122.070714, 41.119997],
'长治': [113.08, 36.18],
'深圳': [114.07, 22.62],
'珠海': [113.52, 22.3],
'宿迁': [118.3, 33.96],
'咸阳': [108.72, 34.36],
'铜川': [109.11, 35.09],
'平度': [119.97, 36.77],
'佛山': [113.11, 23.05],
'海口': [110.35, 20.02],
'江门': [113.06, 22.61],
'章丘': [117.53, 36.72],
'肇庆': [112.44, 23.05],
'大连': [121.62, 38.92],
'临汾': [111.5, 36.08],
'吴江': [120.63, 31.16],
'石嘴山': [106.39, 39.04],
'沈阳': [123.38, 41.8],
'苏州': [120.62, 31.32],
'茂名': [110.88, 21.68],
'嘉兴': [120.76, 30.77],
'长春': [125.35, 43.88],
'胶州': [120.03336, 36.264622],
'银川': [106.27, 38.47],
'张家港': [120.555821, 31.875428],
'三门峡': [111.19, 34.76],
'锦州': [121.15, 41.13],
'南昌': [115.89, 28.68],
'柳州': [109.4, 24.33],
'三亚': [109.511909, 18.252847],
'自贡': [104.778442, 29.33903],
'吉林': [126.57, 43.87],
'阳江': [111.95, 21.85],
'泸州': [105.39, 28.91],
'西宁': [101.74, 36.56],
'宜宾': [104.56, 29.77],
'呼和浩特': [111.65, 40.82],
'成都': [104.06, 30.67],
'大同': [113.3, 40.12],
'镇江': [119.44, 32.2],
'桂林': [110.28, 25.29],
'张家界': [110.479191, 29.117096],
'宜兴': [119.82, 31.36],
'北海': [109.12, 21.49],
'西安': [108.95, 34.27],
'金坛': [119.56, 31.74],
'东营': [118.49, 37.46],
'牡丹江': [129.58, 44.6],
'遵义': [106.9, 27.7],
'绍兴': [120.58, 30.01],
'扬州': [119.42, 32.39],
'常州': [119.95, 31.79],
'潍坊': [119.1, 36.62],
'重庆': [106.54, 29.59],
'台州': [121.420757, 28.656386],
'南京': [118.78, 32.04],
'滨州': [118.03, 37.36],
'贵阳': [106.71, 26.57],
'无锡': [120.29, 31.59],
'本溪': [123.73, 41.3],
'克拉玛依': [84.77, 45.59],
'渭南': [109.5, 34.52],
'马鞍山': [118.48, 31.56],
'宝鸡': [107.15, 34.38],
'焦作': [113.21, 35.24],
'句容': [119.16, 31.95],
'北京': [116.46, 39.92],
'徐州': [117.2, 34.26],
'衡水': [115.72, 37.72],
'包头': [110, 40.58],
'绵阳': [104.73, 31.48],
'乌鲁木齐': [87.68, 43.77],
'枣庄': [117.57, 34.86],
'杭州': [120.19, 30.26],
'淄博': [118.05, 36.78],
'鞍山': [122.85, 41.12],
'溧阳': [119.48, 31.43],
'库尔勒': [86.06, 41.68],
'安阳': [114.35, 36.1],
'开封': [114.35, 34.79],
'济南': [117, 36.65],
'德阳': [104.37, 31.13],
'温州': [120.65, 28.01],
'九江': [115.97, 29.71],
'邯郸': [114.47, 36.6],
'临安': [119.72, 30.23],
'兰州': [103.73, 36.03],
'沧州': [116.83, 38.33],
'临沂': [118.35, 35.05],
'南充': [106.110698, 30.837793],
'天津': [117.2, 39.13],
'富阳': [119.95, 30.07],
'泰安': [117.13, 36.18],
'诸暨': [120.23, 29.71],
'郑州': [113.65, 34.76],
'哈尔滨': [126.63, 45.75],
'聊城': [115.97, 36.45],
'芜湖': [118.38, 31.33],
'唐山': [118.02, 39.63],
'平顶山': [113.29, 33.75],
'邢台': [114.48, 37.05],
'德州': [116.29, 37.45],
'济宁': [116.59, 35.38],
'荆州': [112.239741, 30.335165],
'宜昌': [111.3, 30.7],
'义乌': [120.06, 29.32],
'丽水': [119.92, 28.45],
'洛阳': [112.44, 34.7],
'秦皇岛': [119.57, 39.95],
'株洲': [113.16, 27.83],
'石家庄': [114.48, 38.03],
'莱芜': [117.67, 36.19],
'常德': [111.69, 29.05],
'保定': [115.48, 38.85],
'湘潭': [112.91, 27.87],
'金华': [119.64, 29.12],
'岳阳': [113.09, 29.37],
'长沙': [113, 28.21],
'衢州': [118.88, 28.97],
'廊坊': [116.7, 39.53],
'菏泽': [115.480656, 35.23375],
'合肥': [117.27, 31.86],
'武汉': [114.31, 30.52],
'大庆': [125.03, 46.58]
};
var convertData = function (data) {
var res = [];
for (var i = 0; i < data.length; i++) {
var geoCoord = geoCoordMap[data[i].name];
if (geoCoord) {
res.push({
name: data[i].name,
value: geoCoord.concat(data[i].value)
});
}
}
return res;
};
示例中调用了后台接口,统计用户的位置信息存进数据库,并把登录的分布图通过地图展示出来。再此不会后台的朋友可以去掉后台接口,在前端填写假数据,来把地图展示出来,展示效果实质是一样。
实际页面展示的效果: