前言

近期的app项目中想加一个功能，展示全国各地的某一数据统计情况，想来想去，用echarts做地图数据可视化直观且美观。于是就去研究了如何使用，其实在移动端使用echarts地图踩的bug挺多的，总结如下。

方案一：echarts+百度地图

获取百度地图AK

JavaScript API GL账号和获取密钥

1、获取SHA1：Android平台云端打包 - 公共测试证书
HBuilderX云端打包选择“公共测试证书”时，用于测试的SHA1值为：97:C8:41:01:B9:14:1C:13:0D:D7:5D:74:28:A2:92:25:18:C3:6D:CD

2、获取PackageName：

但是，一顿操作下来，尽管申请好了ak，会发现。。。

咱也不知道为啥，App服务就被禁用了，在网上搜了好半天，也没摸清为啥。但是好在知道如何解决——重新申请一个浏览器端的。。。别问我为啥，测试过了，能用！！！

申请浏览器端ak需要注意Referer白名单的填写。

安装echarts和引入百度地图api

echarts官网

1、安装echarts

npm install echarts --save

需要注意，这里通过 npm 安装了 ECharts 和 zrender 两个包。

2、去官网上找合适的图表：

这里我们用到的案例是：全国主要城市空气质量 - 百度地图
通过上文，我们已经得到了百度地图的ak，但是如果你直接通过script标签引入，可能会出现一些问题。

<script type="text/javascript" src="http://api.map.baidu.com/api?v=3.0&ak=秘钥"></script>

出现报错的原因是：百度的api还没完全引入或者加载完成，就已经开始进行地图初始化了。

在网上学习了一篇优化方案：uniapp在App端百度地图使用记录

整体思路：通过uniapp中的renderjs动态创建script标签，将标签动态添加到页面中，从而实现百度地图API的引入。
uniapp-renderjs：在视图层操作dom，运行 for web 的 js库，大幅降低逻辑层和视图层的通讯损耗，提供高性能视图交互能力，只支持app-vue和web。

<script module="bmap" lang="renderjs">
...
mounted() {// 在组件挂载后初始化百度地图this.initBaiDuMap();
},
methods: {// 动态创建Script标签并加载脚本createScript(url) {return new Promise((resolve, reject) => {var script = document.createElement('script');script.type = 'text/javascript';script.src = url;script.onload = () => {resolve();};script.onerror = () => {reject();};document.head.appendChild(script);});},// 初始化百度地图initBaiDuMap() {const ak = '你申请的百度AK';// 检查window对象中是否存在BMap对象if (typeof window.BMap == 'function') {// 如果BMap对象已存在，直接初始化地图this.initMap();} else {// 如果BMap对象不存在，定义init回调函数，等待脚本加载完成后调用window.init = () => this.initMap();// 动态加载百度地图API脚本this.createScript(`http://api.map.baidu.com/api?v=3.0&ak=${ak}&callback=init`);}},// 实际初始化地图的方法initMap() {// 在这里执行百度地图的初始化操作...}
}
...
<scrpit>

完整使用代码

<template><div><div id="main" style="width: 800px; height: 800px"></div></div>
</template><script module="bmap" lang="renderjs">require("echarts/extension/bmap/bmap");export default {mounted() {this.initBaiDuMap()},methods: {createScript(url) {return new Promise((resolve, reject) => {var script = document.createElement('script')script.type = "text/javascript"script.src = urlscript.onload = () => {resolve()}script.onerror = () => {reject()}document.head.appendChild(script)})},initBaiDuMap() {const ak = '7******i'if (typeof window.BMap == 'function') {this.initMap()} else {window.init = () => this.initMap()this.createScript(`http://api.map.baidu.com/api?v=3.0ak=${ak}&callback=init`)}},async initMap() {var echarts = require("echarts");var chartDom = document.getElementById("main");var myChart = echarts.init(chartDom);var option;const data = [{name: "海门",value: 9},{name: "鄂尔多斯",value: 12},{name: "招远",value: 12},{name: "舟山",value: 12},{name: "齐齐哈尔",value: 14},{name: "盐城",value: 15},{name: "赤峰",value: 16},{name: "青岛",value: 18},{name: "乳山",value: 18},{name: "金昌",value: 19},{name: "泉州",value: 21},{name: "莱西",value: 21},{name: "日照",value: 21},{name: "胶南",value: 22},{name: "南通",value: 23},{name: "拉萨",value: 24},{name: "云浮",value: 24},{name: "梅州",value: 25},{name: "文登",value: 25},{name: "上海",value: 25},{name: "攀枝花",value: 25},{name: "威海",value: 25},{name: "承德",value: 25},{name: "厦门",value: 26},{name: "汕尾",value: 26},{name: "潮州",value: 26},{name: "丹东",value: 27},{name: "太仓",value: 27},{name: "曲靖",value: 27},{name: "烟台",value: 28},{name: "福州",value: 29},{name: "瓦房店",value: 30},{name: "即墨",value: 30},{name: "抚顺",value: 31},{name: "玉溪",value: 31},{name: "张家口",value: 31},{name: "阳泉",value: 31},{name: "莱州",value: 32},{name: "湖州",value: 32},{name: "汕头",value: 32},{name: "昆山",value: 33},{name: "宁波",value: 33},{name: "湛江",value: 33},{name: "揭阳",value: 34},{name: "荣成",value: 34},{name: "连云港",value: 35},{name: "葫芦岛",value: 35},{name: "常熟",value: 36},{name: "东莞",value: 36},{name: "河源",value: 36},{name: "淮安",value: 36},{name: "泰州",value: 36},{name: "南宁",value: 37},{name: "营口",value: 37},{name: "惠州",value: 37},{name: "江阴",value: 37},{name: "蓬莱",value: 37},{name: "韶关",value: 38},{name: "嘉峪关",value: 38},{name: "广州",value: 38},{name: "延安",value: 38},{name: "太原",value: 39},{name: "清远",value: 39},{name: "中山",value: 39},{name: "昆明",value: 39},{name: "寿光",value: 40},{name: "盘锦",value: 40},{name: "长治",value: 41},{name: "深圳",value: 41},{name: "珠海",value: 42},{name: "宿迁",value: 43},{name: "咸阳",value: 43},{name: "铜川",value: 44},{name: "平度",value: 44},{name: "佛山",value: 44},{name: "海口",value: 44},{name: "江门",value: 45},{name: "章丘",value: 45},{name: "肇庆",value: 46},{name: "大连",value: 47},{name: "临汾",value: 47},{name: "吴江",value: 47},{name: "石嘴山",value: 49},{name: "沈阳",value: 50},{name: "苏州",value: 50},{name: "茂名",value: 50},{name: "嘉兴",value: 51},{name: "长春",value: 51},{name: "胶州",value: 52},{name: "银川",value: 52},{name: "张家港",value: 52},{name: "三门峡",value: 53},{name: "锦州",value: 54},{name: "南昌",value: 54},{name: "柳州",value: 54},{name: "三亚",value: 54},{name: "自贡",value: 56},{name: "吉林",value: 56},{name: "阳江",value: 57},{name: "泸州",value: 57},{name: "西宁",value: 57},{name: "宜宾",value: 58},{name: "呼和浩特",value: 58},{name: "成都",value: 58},{name: "大同",value: 58},{name: "镇江",value: 59},{name: "桂林",value: 59},{name: "张家界",value: 59},{name: "宜兴",value: 59},{name: "北海",value: 60},{name: "西安",value: 61},{name: "金坛",value: 62},{name: "东营",value: 62},{name: "牡丹江",value: 63},{name: "遵义",value: 63},{name: "绍兴",value: 63},{name: "扬州",value: 64},{name: "常州",value: 64},{name: "潍坊",value: 65},{name: "重庆",value: 66},{name: "台州",value: 67},{name: "南京",value: 67},{name: "滨州",value: 70},{name: "贵阳",value: 71},{name: "无锡",value: 71},{name: "本溪",value: 71},{name: "克拉玛依",value: 72},{name: "渭南",value: 72},{name: "马鞍山",value: 72},{name: "宝鸡",value: 72},{name: "焦作",value: 75},{name: "句容",value: 75},{name: "北京",value: 79},{name: "徐州",value: 79},{name: "衡水",value: 80},{name: "包头",value: 80},{name: "绵阳",value: 80},{name: "乌鲁木齐",value: 84},{name: "枣庄",value: 84},{name: "杭州",value: 84},{name: "淄博",value: 85},{name: "鞍山",value: 86},{name: "溧阳",value: 86},{name: "库尔勒",value: 86},{name: "安阳",value: 90},{name: "开封",value: 90},{name: "济南",value: 92},{name: "德阳",value: 93},{name: "温州",value: 95},{name: "九江",value: 96},{name: "邯郸",value: 98},{name: "临安",value: 99},{name: "兰州",value: 99},{name: "沧州",value: 100},{name: "临沂",value: 103},{name: "南充",value: 104},{name: "天津",value: 105},{name: "富阳",value: 106},{name: "泰安",value: 112},{name: "诸暨",value: 112},{name: "郑州",value: 113},{name: "哈尔滨",value: 114},{name: "聊城",value: 116},{name: "芜湖",value: 117},{name: "唐山",value: 119},{name: "平顶山",value: 119},{name: "邢台",value: 119},{name: "德州",value: 120},{name: "济宁",value: 120},{name: "荆州",value: 127},{name: "宜昌",value: 130},{name: "义乌",value: 132},{name: "丽水",value: 133},{name: "洛阳",value: 134},{name: "秦皇岛",value: 136},{name: "株洲",value: 143},{name: "石家庄",value: 147},{name: "莱芜",value: 148},{name: "常德",value: 152},{name: "保定",value: 153},{name: "湘潭",value: 154},{name: "金华",value: 157},{name: "岳阳",value: 169},{name: "长沙",value: 175},{name: "衢州",value: 177},{name: "廊坊",value: 193},{name: "菏泽",value: 194},{name: "合肥",value: 229},{name: "武汉",value: 273},{name: "大庆",value: 279},];const 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],};const 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;};option = {title: {text: "全国主要城市空气质量 - 百度地图",subtext: "data from PM25.in",sublink: "http://www.pm25.in",left: "center",},tooltip: {trigger: "item",},bmap: {center: [104.114129, 37.550339],zoom: 5,roam: true,mapStyle: {styleJson: [{featureType: "water",elementType: "all",stylers: {color: "#d1d1d1",},},{featureType: "land",elementType: "all",stylers: {color: "#f3f3f3",},},{featureType: "railway",elementType: "all",stylers: {visibility: "off",},},{featureType: "highway",elementType: "all",stylers: {color: "#fdfdfd",},},{featureType: "highway",elementType: "labels",stylers: {visibility: "off",},},{featureType: "arterial",elementType: "geometry",stylers: {color: "#fefefe",},},{featureType: "arterial",elementType: "geometry.fill",stylers: {color: "#fefefe",},},{featureType: "poi",elementType: "all",stylers: {visibility: "off",},},{featureType: "green",elementType: "all",stylers: {visibility: "off",},},{featureType: "subway",elementType: "all",stylers: {visibility: "off",},},{featureType: "manmade",elementType: "all",stylers: {color: "#d1d1d1",},},{featureType: "local",elementType: "all",stylers: {color: "#d1d1d1",},},{featureType: "arterial",elementType: "labels",stylers: {visibility: "off",},},{featureType: "boundary",elementType: "all",stylers: {color: "#fefefe",},},{featureType: "building",elementType: "all",stylers: {color: "#d1d1d1",},},{featureType: "label",elementType: "labels.text.fill",stylers: {color: "#999999",},},],},},series: [{name: "pm2.5",type: "scatter",coordinateSystem: "bmap",data: convertData(data),symbolSize: function(val) {return val[2] / 10;},encode: {value: 2,},label: {formatter: "{b}",position: "right",show: false,},emphasis: {label: {show: true,},},},{name: "Top 5",type: "effectScatter",coordinateSystem: "bmap",data: convertData(data.sort(function(a, b) {return b.value - a.value;}).slice(0, 6)),symbolSize: function(val) {return val[2] / 10;},encode: {value: 2,},showEffectOn: "render",rippleEffect: {brushType: "stroke",},label: {formatter: "{b}",position: "right",show: true,},itemStyle: {shadowBlur: 10,shadowColor: "#333",},emphasis: {scale: true,},zlevel: 1,},],};option && myChart.setOption(option);}}};
</script><style>
</style>

效果展示：

方案二：echarts地图和柱状图变形动画

实现思路

方案一应用了之后，发现我们的项目似乎更适合这种区域分布状的，更能直观地展示数据。故而，方案二使用的参考示例：地图柱状图变形动画

先来说说，为什么要使用randerjs

对于UNI APP端的开发而言，由于上并没有document，所以我们不能进行相关的DOM操作，同时有关DOM渲染的第三方库(echart、openlayer等)也无法有效的使用，因此官方推出了renderjs方案，来解决上述问题。
renderjs解读

需要注意的是安装echarts之后，里面有中国全国分布地图的信息。

完整使用代码

<template><div><div id="main" style="width: 400px; height: 600px"></div></div>
</template><script module="bmap" lang="renderjs">import 'echarts/map/js/china'; // 引入插件自带地图js-中国地图数据import {chartData} from '@/utils/map.js'  //各省份分布高校数量require("echarts/extension/bmap/bmap");export default {mounted() {this.initMap()},methods: {async initMap() {var echarts = require("echarts");var chartDom = document.getElementById("main");var myChart = echarts.init(chartDom);var option;chartData.sort(function(a, b) {return a.value - b.value;});const mapOption = {title: {text: "全国各地分布高校数量",subtext: 'data from China Education Online',sublink: 'https://www.gaokao.cn/school/search',left: 'center',textStyle: {color: '#fff'}},tooltip: {formatter: function(e) {var name = e.name ? e.name : '获取中';var value = e.value ? e.value : '暂无数据'return name + "：" + value;}},visualMap: {min: 0,max: 180,left: '20%',bottom: 20,text: ['高', '低'],calculable: true,textStyle: {color: '#fff'},inRange: {color: ['#C6FFDD', '#FBD786', '#f74649', 'rgb(194,53,49)']}},geo: {map: 'china',roam: false,zoom: 1.1,label: {emphasis: {show: false}},itemStyle: {borderColor: 'transparent',areaColor: 'transparent'}},series: [{type: 'map',map: 'china',zoom: 1.1,itemStyle: {borderWidth: 1,borderColor: 'rgba(255,255,255,.3)',emphasis: {borderColor: '#ee9ca7',shadowColor: '#ffdde1',shadowBlur: 15,label: {color: '#000000'},areaColor: {x: 0,y: 0,x2: 0,y2: 1,colorStops: [{offset: 0,color: '#fff9a1'}, {offset: 1,color: '#f2f27f'}],},}},data: chartData}]};const barOption = {xAxis: {type: 'value'},yAxis: {type: 'category',axisLabel: {rotate: 30},data: chartData.map(function(item) {return item.name;})},animationDurationUpdate: 1000,series: {type: 'bar',id: 'population',data: chartData.map(function(item) {return item.value;}),universalTransition: true}}let currentOption = mapOption;myChart.setOption(mapOption);setInterval(function() {currentOption = currentOption === mapOption ? barOption : mapOption;myChart.setOption(currentOption, true);}, 10000);option && myChart.setOption(option);},}};
</script>
<style>
</style>

效果展示
【本来这里是一个中国地图，但是违规了。。。类似于下图】

方案三：中国地图和各省市地图下钻

实现思路

1、实现思路：
展示一个完整的中国地图，点击某个省市，会实现地图切换，展示该省市完整的地图。（两个页面，一个页面展示中国地图，一个页面展示某省份的地图）

2、耗时点：
上文我们提到过，在uni-app的app和h5端渲染echarts图层，需要基于renderjs来编写代码。因而，就出现了最让人头大的问题：页面传参

先说一下我用过的几种方法：
a. 路由传参： 测了好久，一直以为是参数取错了，最后才发现是参数根本没传过来，在网上搜了好久也没有相关的解答，后来想到可能是randerjs渲染的问题，就去仔细看了官方文档，果不其然——APP 端可以使用 dom、bom API，不可直接访问逻辑层数据，不可以使用 uni 相关接口（如：uni.request）。

b. vuex传参： mapMutations和mapActions在APP端renderjs内使用，还会报错：
TypeError: Cannot read property ‘dispatch’ of undefined. UNIAPP renderjs vuex共享复杂对象，APP端navigateTo后获取不到前一个页面对数据的更新，H5正常

c. BroadcastChannel通信： 在vuex后附的文章评论区中看到了一条建议使用BroadcastChannel通信，我还特意去研究了一下BroadcastChannel，按照MDN的要求去写，很遗憾应用失败，无法进行通信。可能是我研究得不够透彻，在网上找了找，也没有在uniapp中使用BroadcastChannel的相关文章，uniapp的官网上也没搜到说需要安装相关的包。

d. renderjs传值： 这个逻辑是什么呢，我大概看懂了一点，就是在randerjs上可以通过ownerVm.callMethod('逻辑层的方法名', 参数) 来触发逻辑层中的方法，而且也逻辑层也能通过监测数据的变化动态改变randerjs去渲染视图。那么基于这种方法，就可以使用路由传参和vuex传值了。

页面1：

<template><div><div @click="echarts.emitData" id="main" style="width: 350px; height: 500px;margin: 0 auto;"></div></div>
</template>
<script>import {mapMutations} from 'vuex';export default {methods: {...mapMutations(['saveProvinceJson', 'saveProvinceName']),//逻辑层的方法receiveRenderData(val) {//vuex传参this.saveProvinceJson(val.pename)this.saveProvinceName(val.pname)//路由传参// uni.navigateTo({// url: '/subpkg/message_notification/provinceData?pname=' + val.pname + '&pename=' + val.pename// })}}}
</script>
<script module="echarts" lang="renderjs">import 'echarts/map/js/china'; // 引入插件自带地图js-中国地图数据import {chartData} from '@/utils/map.js'require("echarts/extension/bmap/bmap");export default {data() {return {pname: '',pename: ''}},mounted() {this.initMap()},methods: {async initMap() {var echarts = require("echarts");var chartDom = document.getElementById("main");var myChart = echarts.init(chartDom);var option;....//这里需要注意myChart方法内部的this指向问题let that = thismyChart.on("click", function(params) {if (!params.data.ename) {alert('暂无' + params.name + '地图数据');return;}//可以通过 this.$ownerInstance 获取当前组件的 ComponentDescriptor 实例，那么也就能借此来向外传递参数了。that.$ownerInstance.$vm.pname = params.namethat.$ownerInstance.$vm.pename = params.data.ename});option && myChart.setOption(option);},// 调用逻辑层的方法emitData(e, ownerVm) {ownerVm.callMethod('receiveRenderData', {pname: this.pname,pename: this.pename})}}};
</script><style>
</style>

页面二：

<template><div><div :provinceJson="provinceJson" :change:provinceJson="echarts.receiveMsg" id="main"style="width: 350px; height: 500px;margin: 0 auto;"></div></div>
</template>
<script>export default {data() {return {provinceJson: ''};},//获取路由传递过来的参数// onLoad(query) {//   console.log(222);//   console.log(query.pname);//   this.provinceJson = query.pename//   this.provinceName = query.pname// },mounted() {this.changeMsg()},methods: {// 监测数据发生变化时，触发renderjschangeMsg() {this.provinceJson = this.$store.state.map.provinceJson},}}
</script>
<script module="echarts" lang="renderjs">import 'echarts/map/js/province/anhui'; // 引入插件自带地图js-中国地图数据import {anhuiData} from '@/utils/map.js'require("echarts/extension/bmap/bmap");export default {data() {return {provinceJson: "",provinceName: ""}},methods: {// 接收逻辑层传递过来的数据receiveMsg(newValue, oldValue, ownerVm, vm) {console.log('newValue', newValue)console.log('oldValue', oldValue)console.log('ownerVm', ownerVm)console.log('vm', vm)this.provinceJson = ownerVm.$vm.provinceJsonthis.provinceName = ownerVm.$vm.provinceName},}};
</script><style>
</style>

e. localStorage.setItem数据存本地： 这是目前测试过，最简单好用的，而且只是存个’henan’、'河南’的字段，也不用考虑太多问题。

完整使用代码

页面1：

<template><div><div id="main" style="width: 350px; height: 500px;margin: 0 auto;"></div></div>
</template><script module="echarts" lang="renderjs">import 'echarts/map/js/china'; // 引入插件自带地图js-中国地图数据import {chartData} from '@/utils/map.js'require("echarts/extension/bmap/bmap");export default {mounted() {this.initMap()},methods: {async initMap() {var echarts = require("echarts");var chartDom = document.getElementById("main");var myChart = echarts.init(chartDom);var option;chartData.sort(function(a, b) {return a.value - b.value;});const mapOption = {nodeClick: 'link',title: {text: '全国各地分布高校数量',subtext: 'data from China Education Online',left: 'center',textStyle: {color: '#000'}},tooltip: {formatter: function(e) {var name = e.name ? e.name : '获取中';var value = e.value ? e.value : '暂无数据'return name + "：" + value;}},visualMap: {min: 0,max: 180,left: '20%',bottom: 20,text: ['高', '低'],calculable: true,textStyle: {color: '#fff'},inRange: {color: ['#C6FFDD', '#FBD786', '#f74649', 'rgb(194,53,49)']}},geo: {map: 'china',roam: false,zoom: 1.1,label: {emphasis: {show: false}},itemStyle: {borderColor: 'transparent',areaColor: 'transparent'}},series: [{type: 'map',map: 'china',zoom: 1.1,itemStyle: {borderWidth: 1,borderColor: 'rgba(255,255,255,.3)',emphasis: {borderColor: '#ee9ca7',shadowColor: '#ffdde1',shadowBlur: 15,label: {color: '#000000'},areaColor: {x: 0,y: 0,x2: 0,y2: 1,colorStops: [{offset: 0,color: '#fff9a1'}, {offset: 1,color: '#f2f27f'}],},}},data: chartData}]};const barOption = {title: {text: "全国各地分布高校数量",subtext: 'data from China Education Online',left: 'center',textStyle: {color: '#000'}},xAxis: {type: 'value'},yAxis: {type: 'category',axisLabel: {rotate: 30},data: chartData.map(function(item) {return item.name;})},tooltip: {formatter: function(e) {var name = e.name ? e.name : '获取中';var value = e.value ? e.value : '暂无数据'return name + "：" + value;}},animationDurationUpdate: 1000,series: {type: 'bar',id: 'population',data: chartData.map(function(item) {return item.value;}),universalTransition: true}}let currentOption = mapOption;myChart.setOption(mapOption);myChart.on("click", function(params) {if (!params.data.ename) {alert('暂无' + params.name + '地图数据');return;}localStorage.setItem("provinceJson", params.data.ename)localStorage.setItem("provinceName", params.name)uni.navigateTo({url: '/subpkg/message_notification/provinceData'})});setInterval(function() {currentOption = currentOption === mapOption ? barOption : mapOption;myChart.setOption(currentOption, true);}, 10000);option && myChart.setOption(option);},}};
</script><style>
</style>

页面2：

<template><div><div id="main" style="width: 350px; height: 500px;margin: 0 auto;"></div></div>
</template><script module="echarts" lang="renderjs">import {anhuiData} from '@/utils/map.js'require("echarts/extension/bmap/bmap");export default {data() {return {provinceJson: localStorage.getItem('provinceJson') || '',provinceName: localStorage.getItem('provinceName') || ''}},mounted() {this.addJs()this.initMap()},methods: {async addJs() {if (this.provinceJson) {await require('echarts/map/js/province/' + this.provinceJson)}},async initMap() {console.log(this.provinceJson, this.provinceName);var echarts = require("echarts");var chartDom = document.getElementById("main");var myChart = echarts.init(chartDom);var option;anhuiData.sort(function(a, b) {return a.value - b.value;});const mapOption = {title: {text: this.provinceName + '各地分布高校数量',subtext: 'data from China Education Online',left: 'center',textStyle: {color: '#000'}},tooltip: {formatter: function(e) {var name = e.name ? e.name : '获取中';var value = e.value ? e.value : '暂无数据'return name + "：" + value;}},visualMap: {min: 0,max: 10,left: 'left',bottom: 20,text: ['高', '低'],calculable: true,textStyle: {color: '#fff'},inRange: {color: ['#C6FFDD', '#FBD786', '#f74649', 'rgb(194,53,49)']}},geo: {map: this.provinceName,roam: false,zoom: 1.1,label: {emphasis: {show: false}},itemStyle: {borderColor: 'transparent',areaColor: 'transparent'}},series: [{top: 100,type: 'map',map: this.provinceName,zoom: 1.1,itemStyle: {borderWidth: 1,borderColor: 'rgba(255,255,255,.3)',emphasis: {borderColor: '#ee9ca7',shadowColor: '#ffdde1',shadowBlur: 15,label: {color: '#000000'},areaColor: {x: 0,y: 0,x2: 0,y2: 1,colorStops: [{offset: 0,color: '#fff9a1'}, {offset: 1,color: '#f2f27f'}],},}},data: anhuiData}]};const barOption = {title: {text: "全国各地分布高校数量",subtext: 'data from China Education Online',left: 'center',textStyle: {color: '#000'}},xAxis: {type: 'value'},yAxis: {type: 'category',axisLabel: {rotate: 30},data: anhuiData.map(function(item) {return item.name;})},tooltip: {formatter: function(e) {var name = e.name ? e.name : '获取中';var value = e.value ? e.value : '暂无数据'return name + "：" + value;}},animationDurationUpdate: 1000,series: {type: 'bar',id: 'population',data: anhuiData.map(function(item) {return item.value;}),universalTransition: true}}let currentOption = mapOption;myChart.setOption(mapOption);// setInterval(function() {//   currentOption = currentOption === mapOption ? barOption : mapOption;//   myChart.setOption(currentOption, true);// }, 10000);option && myChart.setOption(option);},}};
</script><style>
</style>

OK，至此，初步应用成功！我知道这一篇写的有点乱…不要急，慢慢看家人们，希望能帮到各位！
如有误，请指正！