本文主要敘說了百度地圖的兩種用法：
1 在頁(yè)面上直接調(diào)用百度地圖API，顯示地圖
2 使用Echart框架可視化加載百度地圖API
這兩種使用方式，都舉例說明，便于理解

一 在頁(yè)面上直接使用百度地圖API

首先申請(qǐng)百度地圖JavaScript AP ak，這個(gè)ak可以理解我一種身份驗(yàn)證，調(diào)用百度地圖必須有ak才能調(diào)用。百度地圖API官網(wǎng)地址

ak申請(qǐng)

下例中調(diào)用百度地圖API初始化一個(gè)地圖，并定位到當(dāng)前城市，直接上代碼：

• 1首先引用百度地圖API js

<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=……"></script>

• 2添加一個(gè)div容器，用于地圖的渲染位置

  <div id="allmap"></div>

• 3寫代碼實(shí)例化地圖，獲取當(dāng)前位置并讓地圖定位到當(dāng)前位置

var map = new BMap.Map("allmap");
map.enableScrollWheelZoom();
map.enableInertialDragging();
map.enableContinuousZoom();
map.addControl(new BMap.NavigationControl());//平移縮放控件    
map.addControl(new BMap.ScaleControl());    //比例尺
map.addControl(new BMap.OverviewMapControl());  //縮略地圖  
map.addControl(new BMap.MapTypeControl());   //地圖類型 
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);
}

image.png

二 使用Echart框架可視化加載百度地圖API

同上例使用之前也要申請(qǐng)百度地圖JavaScript AP ak，無論什么方式ak是必須條件

• 1 首先引用百度地圖API .Echart和Echart百度地圖擴(kuò)展js

<environment names="Development">
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=……"></script>
    <script src="~/js/echarts.min.js"></script>
    <script src="~/js/bmap.min.js"></script>
</environment>

environment是我的后臺(tái)環(huán)境配置，不使用.net core框架的直接去掉

• 2 添加一個(gè)div容器，用于地圖的渲染位置

<div class="wrap">
    <div class="map" id="map">
    </div>
</div>

-3

GHJ();
//初始化定位
var geolocation = new BMap.Geolocation();
//獲取定位信息
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());       
    }
});
//初始化地圖
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: '系統(tǒng)登錄分布地圖',
                subtext: '作者 凌云木',
                sublink: 'http://www.itdecent.cn/u/79758fa3d8b0',
                left: 'center'
            },
            tooltip: {
                trigger: 'item'
            },
            legend: {
                orient: 'vertical',
                zlevel: 2,
                //top: 45,
                right: 20,
                data: ['累計(jì)', 'Top5']
            },
            bmap: {
                // 百度地圖中心經(jīng)緯度
                center: [104.114129, 37.550339],
                // 百度地圖縮放
                zoom: 5,
                type: 'map',
                //mapType: 'china',
                //selectedMode: 'multiple',
                //是否開啟拖拽縮放，可以只設(shè)置 'scale' 或者 'move'
                roam: true,
                //百度地圖的自定義樣式
                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: '累計(jì)',
                    type: 'scatter',//散點(diǎn)類型
                    coordinateSystem: 'bmap',
                    data: convertData(data),
                    symbolSize: function (val) {
                        return val[2] / 10;
                    },
                    label: {
                        normal: {
                            formatter: '{c}',
                            position: 'right',
                            show: false
                        },
                        emphasis: {
                            show: false
                        }
                    },
                    tooltip: {
                        formatter: function (param) {
                            return param.name + '已有' + param.value[2] + '人登錄';

                        }
                    },
                    itemStyle: {
                        normal: {
                            color: '#f4e925'
                        }
                    }
                },
                {
                    name: 'Top5',
                    type: 'effectScatter',//散點(diǎn)（氣泡）圖
                    coordinateSystem: 'bmap',
                    data: convertData(data.sort(function (a, b) {
                        return b.value - a.value;//按照值的大小排序，并選擇前五項(xiàng)
                    }).slice(0, 6)),
                    symbolSize: function (val) {
                        return val[2] / 10;
                    },
                    showEffectOn: 'render',//配置何時(shí)顯示特效。
                    rippleEffect: {//漣漪特效相關(guān)配置。
                        brushType: 'stroke'
                    },
                    hoverAnimation: true,
                    label: {
                        normal: {
                            formatter: '{c}',
                            position: 'right',
                            show: false
                        },
                        emphasis: {
                            show: false
                        }
                    },
                    tooltip: {
                        formatter: function (param) {
                            return ' 【TOP5】' + param.name + '已有' + param.value[2] + '人登錄';
                        }
                    },
                    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);
};
//插入當(dāng)前登錄用戶的位置信息
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("位置信息更新失敗");
        }
    };
    ajax(request);
    param = null;

}
var geoCoordMap = {
    '海門': [121.15, 31.89],
    '鄂爾多斯': [109.781327, 39.608266],
    '招遠(yuǎn)': [120.38, 37.35],
    '舟山': [122.207216, 29.985295],
    '齊齊哈爾': [123.97, 47.33],
    '鹽城': [120.13, 33.38],
    '赤峰': [118.87, 42.28],
    '青島': [120.33, 36.07],
    '乳山': [121.52, 36.89],
    '金昌': [102.188043, 38.520089],
    '泉州': [118.58, 24.93],
    '萊西': [120.53, 36.86],
    '日照': [119.46, 35.42],
    '膠南': [119.97, 35.88],
    '南通': [121.05, 32.08],
    '拉薩': [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],
    '廈門': [118.1, 24.46],
    '汕尾': [115.375279, 22.786211],
    '潮州': [116.63, 23.68],
    '丹東': [124.37, 40.13],
    '太倉(cāng)': [121.1, 31.45],
    '曲靖': [103.79, 25.51],
    '煙臺(tái)': [121.39, 37.52],
    '福州': [119.3, 26.08],
    '瓦房店': [121.979603, 39.627114],
    '即墨': [120.45, 36.38],
    '撫順': [123.97, 41.97],
    '玉溪': [102.52, 24.35],
    '張家口': [114.87, 40.82],
    '陽泉': [113.57, 37.85],
    '萊州': [119.942327, 37.177017],
    '湖州': [120.1, 30.86],
    '汕頭': [116.69, 23.39],
    '昆山': [120.95, 31.39],
    '寧波': [121.56, 29.86],
    '湛江': [110.359377, 21.270708],
    '揭陽': [116.35, 23.55],
    '榮成': [122.41, 37.16],
    '連云港': [119.16, 34.59],
    '葫蘆島': [120.836932, 40.711052],
    '常熟': [120.74, 31.64],
    '東莞': [113.75, 23.04],
    '河源': [114.68, 23.73],
    '淮安': [119.15, 33.5],
    '泰州': [119.9, 32.49],
    '南寧': [108.33, 22.84],
    '營(yíng)口': [122.18, 40.65],
    '惠州': [114.4, 23.09],
    '江陰': [120.26, 31.91],
    '蓬萊': [120.75, 37.8],
    '韶關(guān)': [113.62, 24.84],
    '嘉峪關(guān)': [98.289152, 39.77313],
    '廣州': [113.23, 23.16],
    '延安': [109.47, 36.6],
    '太原': [112.53, 37.87],
    '清遠(yuǎn)': [113.01, 23.7],
    '中山': [113.38, 22.52],
    '昆明': [102.73, 25.04],
    '壽光': [118.73, 36.86],
    '盤錦': [122.070714, 41.119997],
    '長(zhǎng)治': [113.08, 36.18],
    '深圳': [114.07, 22.62],
    '珠海': [113.52, 22.3],
    '宿遷': [118.3, 33.96],
    '咸陽': [108.72, 34.36],
    '銅川': [109.11, 35.09],
    '平度': [119.97, 36.77],
    '佛山': [113.11, 23.05],
    '?？?: [110.35, 20.02],
    '江門': [113.06, 22.61],
    '章丘': [117.53, 36.72],
    '肇慶': [112.44, 23.05],
    '大連': [121.62, 38.92],
    '臨汾': [111.5, 36.08],
    '吳江': [120.63, 31.16],
    '石嘴山': [106.39, 39.04],
    '沈陽': [123.38, 41.8],
    '蘇州': [120.62, 31.32],
    '茂名': [110.88, 21.68],
    '嘉興': [120.76, 30.77],
    '長(zhǎng)春': [125.35, 43.88],
    '膠州': [120.03336, 36.264622],
    '銀川': [106.27, 38.47],
    '張家港': [120.555821, 31.875428],
    '三門峽': [111.19, 34.76],
    '錦州': [121.15, 41.13],
    '南昌': [115.89, 28.68],
    '柳州': [109.4, 24.33],
    '三亞': [109.511909, 18.252847],
    '自貢': [104.778442, 29.33903],
    '吉林': [126.57, 43.87],
    '陽江': [111.95, 21.85],
    '瀘州': [105.39, 28.91],
    '西寧': [101.74, 36.56],
    '宜賓': [104.56, 29.77],
    '呼和浩特': [111.65, 40.82],
    '成都': [104.06, 30.67],
    '大同': [113.3, 40.12],
    '鎮(zhèn)江': [119.44, 32.2],
    '桂林': [110.28, 25.29],
    '張家界': [110.479191, 29.117096],
    '宜興': [119.82, 31.36],
    '北海': [109.12, 21.49],
    '西安': [108.95, 34.27],
    '金壇': [119.56, 31.74],
    '東營(yíng)': [118.49, 37.46],
    '牡丹江': [129.58, 44.6],
    '遵義': [106.9, 27.7],
    '紹興': [120.58, 30.01],
    '揚(yáng)州': [119.42, 32.39],
    '常州': [119.95, 31.79],
    '濰坊': [119.1, 36.62],
    '重慶': [106.54, 29.59],
    '臺(tái)州': [121.420757, 28.656386],
    '南京': [118.78, 32.04],
    '濱州': [118.03, 37.36],
    '貴陽': [106.71, 26.57],
    '無錫': [120.29, 31.59],
    '本溪': [123.73, 41.3],
    '克拉瑪依': [84.77, 45.59],
    '渭南': [109.5, 34.52],
    '馬鞍山': [118.48, 31.56],
    '寶雞': [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],
    '包頭': [110, 40.58],
    '綿陽': [104.73, 31.48],
    '烏魯木齊': [87.68, 43.77],
    '棗莊': [117.57, 34.86],
    '杭州': [120.19, 30.26],
    '淄博': [118.05, 36.78],
    '鞍山': [122.85, 41.12],
    '溧陽': [119.48, 31.43],
    '庫(kù)爾勒': [86.06, 41.68],
    '安陽': [114.35, 36.1],
    '開封': [114.35, 34.79],
    '濟(jì)南': [117, 36.65],
    '德陽': [104.37, 31.13],
    '溫州': [120.65, 28.01],
    '九江': [115.97, 29.71],
    '邯鄲': [114.47, 36.6],
    '臨安': [119.72, 30.23],
    '蘭州': [103.73, 36.03],
    '滄州': [116.83, 38.33],
    '臨沂': [118.35, 35.05],
    '南充': [106.110698, 30.837793],
    '天津': [117.2, 39.13],
    '富陽': [119.95, 30.07],
    '泰安': [117.13, 36.18],
    '諸暨': [120.23, 29.71],
    '鄭州': [113.65, 34.76],
    '哈爾濱': [126.63, 45.75],
    '聊城': [115.97, 36.45],
    '蕪湖': [118.38, 31.33],
    '唐山': [118.02, 39.63],
    '平頂山': [113.29, 33.75],
    '邢臺(tái)': [114.48, 37.05],
    '德州': [116.29, 37.45],
    '濟(jì)寧': [116.59, 35.38],
    '荊州': [112.239741, 30.335165],
    '宜昌': [111.3, 30.7],
    '義烏': [120.06, 29.32],
    '麗水': [119.92, 28.45],
    '洛陽': [112.44, 34.7],
    '秦皇島': [119.57, 39.95],
    '株洲': [113.16, 27.83],
    '石家莊': [114.48, 38.03],
    '萊蕪': [117.67, 36.19],
    '常德': [111.69, 29.05],
    '保定': [115.48, 38.85],
    '湘潭': [112.91, 27.87],
    '金華': [119.64, 29.12],
    '岳陽': [113.09, 29.37],
    '長(zhǎng)沙': [113, 28.21],
    '衢州': [118.88, 28.97],
    '廊坊': [116.7, 39.53],
    '菏澤': [115.480656, 35.23375],
    '合肥': [117.27, 31.86],
    '武漢': [114.31, 30.52],
    '大慶': [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;
};

示例中調(diào)用了后臺(tái)接口，統(tǒng)計(jì)用戶的位置信息存進(jìn)數(shù)據(jù)庫(kù)，并把登錄的分布圖通過地圖展示出來。再此不會(huì)后臺(tái)的朋友可以去掉后臺(tái)接口，在前端填寫假數(shù)據(jù)，來把地圖展示出來，展示效果實(shí)質(zhì)是一樣。

實(shí)際頁(yè)面展示的效果：

20180524.gif