/** 边界数据的实时获取与应用，省市区县多级联动【附最新geoJson文件下载】边界数据可以实时获取，也可以结合geojson本地文件加载 geojson文件下载地址：https://hxkj.vip/demo/echartsMap/ 项目GitHub地址（欢迎star）：https://github.com/TangSY/echarts-map-demo 作者：TSY 作者个人空间（欢迎闲逛）：https://hxkj.vip **/ $(`

下属行政区查询

省市区

地级市

区县

请选择文件命名方式

地域名称地域行政编码

下载geoJson数据

`).appendTo( $('#chart-panel') ); $('*').css({ 'box-sizing': 'border-box' }) $('#container').css({ position: 'absolute', width: '100%', left: '0', top: '0', height: '100%', }) $('.input-card').css({ position: 'fixed', top: '10px', left: '10px', height: '300px', display: 'flex', 'flex-direction': 'column', 'min-width': '0', 'word-wrap': 'break-word', 'background-color': '#fff', 'background-clip': 'border-box', 'border-radius': '.25rem', width: '22rem', 'border-width': '0', 'border-radius': '0.4rem', 'box-shadow': '0 2px 6px 0 rgba(114, 124, 245, .5)', bottom: '1rem', right: '1rem', '-ms-flex': '1 1 auto', flex: '1 1 auto', padding: '0.75rem 1.25rem', 'z-index': '10' }) $('.input-item').css({ position: 'relative', display: '-ms-flexbox', display: 'flex', '-ms-flex-wrap': 'wrap', 'flex-wrap': 'wrap', '-ms-flex-align': 'center', 'align-items': 'center', width: '100%', height: '3rem' }) $('.input-item-text').css({ width: '6rem', 'text-align': 'justify', padding: '0.4rem 0.7rem', display: 'inline-block', 'text-justify': 'distribute-all-lines', 'text-align-last': 'justify', '-moz-text-align-last': 'justify', '-webkit-text-align-last': 'justify', '-ms-flex-align': 'center', 'align-items': 'center', 'margin-bottom': '0', 'font-size': '1rem', ' font-weight': '400', 'line-height': '1.5', color: '#495057', 'text-align': 'center', 'white-space': 'nowrap', 'background-color': '#e9ecef', border: '1px solid #ced4da', 'border-radius': '.25rem', 'border-bottom-right-radius': '0', 'border-top-right-radius': '0', height: 'calc(2.2rem + 2px)' }) var url = ""; var background = `#fff url(${url}) no-repeat right .75rem center` $('select').css({ display: 'inline-block', width: '100%', padding: '.375rem 1.75rem .375rem .75rem', 'line-height': '1.5', color: '#495057', 'vertical-align': 'middle', 'background-size': '8px 10px', border: '1px solid #ced4da', 'border-radius': '.25rem', '-webkit-appearance': 'none', '-moz-appearance': 'none', appearance: 'none', position: 'relative', '-ms-flex': '1 1 auto', flex: '1 1 auto', width: '1%', 'border-top-left-radius': '0', 'border-bottom-left-radius': '0', height: 'calc(2.2rem + 2px)', 'margin-bottom': '0' }) $('.radio').css({ margin: '3px 0' }) $($('#chart-panel').children("div").get(0)).css({ position: 'absolute', 'z-index': '8' }) $('.download').css({ display: '-webkit-box', display: '-ms-flexbox', display: 'flex', '-webkit-box-pack': 'center', '-ms-flex-pack': 'center', 'justify-content': 'center', '-webkit-box-align': 'center', '-ms-flex-align': 'center', 'align-items': 'center', border: '1px solid #ced4da', 'border-radius': '.25rem', 'background-color': '#e9ecef', color: '#495057', 'text-align': 'center', cursor: 'pointer' }) var map, district, polygons = [], mapData = [], cityCode = 100000, cityName = '中国', areaCode = 10000, geoJsonData = ''; var citySelect = document.getElementById('city'); var districtSelect = document.getElementById('district'); var areaSelect = document.getElementById('street'); var areaData = {} $("select").change(function() { search(this); }); map = new AMap.Map('container', { resizeEnable: true, center: [116.30946, 39.937629], zoom: 3 }); //行政区划查询 var opts = { subdistrict: 1, //返回下一级行政区 showbiz: false //最后一级返回街道信息 }; district = new AMap.DistrictSearch(opts); //注意：需要使用插件同步下发功能才能这样直接使用 district.search('中国', function(status, result) { if (status == 'complete') { getData(result.districtList[0], '', 100000); } }); function echartsMapClick(params) { //地图点击事件 if (!params.data || params.data.level == 'street') return; cityName = params.data.name; cityCode = params.data.cityCode; district.setLevel(params.data.level); //行政区级别 district.setExtensions('all'); //行政区查询 //按照adcode进行查询可以保证数据返回的唯一性 district.search(params.data.cityCode, (status, result) => { if (status === 'complete') { getData(result.districtList[0], params.data.level, params.data.cityCode); } }); }; function loadMapData(areaCode) { AMapUI.loadUI(['geo/DistrictExplorer'], DistrictExplorer => { //创建一个实例 var districtExplorer = window.districtExplorer = new DistrictExplorer({ eventSupport: true, //打开事件支持 map: map }); districtExplorer.loadAreaNode(areaCode, (error, areaNode) => { if (error) { console.error(error); return; } let mapJson = {}; mapJson.features = areaNode.getSubFeatures(); loadMap(cityName, mapJson); geoJsonData = mapJson; }); }); }; function downloadJson() { var nameType = $("input[name='nameType']:checked").val(); var blob = new Blob([JSON.stringify(geoJsonData)], { type: "text/plain;charset=utf-8" }); let filename = cityName; if (nameType === 'code') { filename = cityCode; } saveAs(blob, `${filename}.geoJson`); //filename }; function loadMap(mapName, data) { if (data) { echarts.registerMap(mapName, data); var option = { backgroundColor: 'rgba(0,0,0,.6)', visualMap: { type: 'piecewise', pieces: [{ max: 30, label: '安全', color: '#2c9a42' }, { min: 30, max: 60, label: '警告', color: '#d08a00' }, { min: 60, label: '危险', color: '#c23c33' }, ], color: '#fff', textStyle: { color: '#fff', }, visibility: 'off' }, series: [{ name: '数据名称', type: 'map', roam: false, mapType: mapName, selectedMode: 'single', showLegendSymbol: false, visibility: 'off', itemStyle: { normal: { color: '#ccc', areaColor: '#fff', borderColor: '#fff', borderWidth: 0.5, label: { show: true, textStyle: { color: "rgb(249, 249, 249)" } } }, emphasis: { areaColor: false, borderColor: '#fff', areaStyle: { color: '#fff' }, label: { show: true, textStyle: { color: "rgb(249, 249, 249)" } } } }, data: mapData, }] }; myChart.setOption(option); } }; myChart.on('click', echartsMapClick); $('.download').on('click', downloadJson); function getData(data, level, adcode) { var bounds = data.boundaries; if (bounds) { for (var i = 0, l = bounds.length; i < l; i++) { var polygon = new AMap.Polygon({ map: map, strokeWeight: 1, strokeColor: '#0091ea', fillColor: '#80d8ff', fillOpacity: 0.2, path: bounds[i] }); polygons.push(polygon); } map.setFitView(); //地图自适应 } //清空下一级别的下拉列表 if (level === 'province') { citySelect.innerHTML = ''; districtSelect.innerHTML = ''; } else if (level === 'city') { districtSelect.innerHTML = ''; } var subList = data.districtList; if (subList) { var contentSub = new Option('--请选择--'); var curlevel = subList[0].level; if (curlevel === 'street') { let mapJsonList = geoJsonData.features; let mapJson = {}; for (let i in mapJsonList) { if (mapJsonList[i].properties.name == cityName) { mapJson.features = [].concat(mapJsonList[i]); } } mapData = []; mapData.push({ name: cityName, value: Math.random() * 100, level: curlevel }); loadMap(cityName, mapJson); geoJsonData = mapJson; return; } var curList = document.querySelector('#' + curlevel); curList.add(contentSub); mapData = []; for (var i = 0, l = subList.length; i < l; i++) { var name = subList[i].name; var citycode = subList[i].adcode; mapData.push({ name: name, value: Math.random() * 100, cityCode: citycode, level: curlevel }); var levelSub = subList[i].level; contentSub = new Option(name); contentSub.setAttribute("value", levelSub); contentSub.center = subList[i].center; contentSub.adcode = subList[i].adcode; curList.add(contentSub); } loadMapData(adcode); areaData[curlevel] = curList; } } function search(obj) { console.log('111') //清除地图上所有覆盖物 for (var i = 0, l = polygons.length; i < l; i++) { polygons[i].setMap(null); } var option = obj[obj.options.selectedIndex]; var keyword = option.text; //关键字 var adcode = option.adcode; cityName = keyword; cityCode = adcode; district.setLevel(option.value); //行政区级别 district.setExtensions('all'); //行政区查询 //按照adcode进行查询可以保证数据返回的唯一性 district.search(adcode, function(status, result) { if (status === 'complete') { getData(result.districtList[0], obj.id, adcode); } }); } function setCenter(obj) { map.setCenter(obj[obj.options.selectedIndex].center) } var saveAs = saveAs || (function(view) { "use strict"; // IE <10 is explicitly unsupported if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) { return; } var doc = view.document // only get URL when necessary in case Blob.js hasn't overridden it yet , get_URL = function() { return view.URL || view.webkitURL || view; } , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a") , can_use_save_link = "download" in save_link , click = function(node) { var event = new MouseEvent("click"); node.dispatchEvent(event); } , is_safari = /constructor/i.test(view.HTMLElement) || view.safari , is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent) , throw_outside = function(ex) { (view.setImmediate || view.setTimeout)(function() { throw ex; }, 0); } , force_saveable_type = "application/octet-stream" // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to , arbitrary_revoke_timeout = 1000 * 40 // in ms , revoke = function(file) { var revoker = function() { if (typeof file === "string") { // file is an object URL get_URL().revokeObjectURL(file); } else { // file is a File file.remove(); } }; setTimeout(revoker, arbitrary_revoke_timeout); } , dispatch = function(filesaver, event_types, event) { event_types = [].concat(event_types); var i = event_types.length; while (i--) { var listener = filesaver["on" + event_types[i]]; if (typeof listener === "function") { try { listener.call(filesaver, event || filesaver); } catch (ex) { throw_outside(ex); } } } } , auto_bom = function(blob) { // prepend BOM for UTF-8 XML and text/* types (including HTML) // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type}); } return blob; } , FileSaver = function(blob, name, no_auto_bom) { if (!no_auto_bom) { blob = auto_bom(blob); } // First try a.download, then web filesystem, then object URLs var filesaver = this , type = blob.type , force = type === force_saveable_type , object_url , dispatch_all = function() { dispatch(filesaver, "writestart progress write writeend".split(" ")); } // on any filesys errors revert to saving with object URLs , fs_error = function() { if ((is_chrome_ios || (force && is_safari)) && view.FileReader) { // Safari doesn't allow downloading of blob urls var reader = new FileReader(); reader.onloadend = function() { var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;'); var popup = view.open(url, '_blank'); if(!popup) view.location.href = url; url=undefined; // release reference before dispatching filesaver.readyState = filesaver.DONE; dispatch_all(); }; reader.readAsDataURL(blob); filesaver.readyState = filesaver.INIT; return; } // don't create more object URLs than needed if (!object_url) { object_url = get_URL().createObjectURL(blob); } if (force) { view.location.href = object_url; } else { var opened = view.open(object_url, "_blank"); if (!opened) { // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html view.location.href = object_url; } } filesaver.readyState = filesaver.DONE; dispatch_all(); revoke(object_url); } ; filesaver.readyState = filesaver.INIT; if (can_use_save_link) { object_url = get_URL().createObjectURL(blob); setTimeout(function() { save_link.href = object_url; save_link.download = name; click(save_link); dispatch_all(); revoke(object_url); filesaver.readyState = filesaver.DONE; }); return; } fs_error(); } , FS_proto = FileSaver.prototype , saveAs = function(blob, name, no_auto_bom) { return new FileSaver(blob, name || blob.name || "download", no_auto_bom); } ; // IE 10+ (native saveAs) if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) { return function(blob, name, no_auto_bom) { name = name || blob.name || "download"; if (!no_auto_bom) { blob = auto_bom(blob); } return navigator.msSaveOrOpenBlob(blob, name); }; } FS_proto.abort = function(){}; FS_proto.readyState = FS_proto.INIT = 0; FS_proto.WRITING = 1; FS_proto.DONE = 2; FS_proto.error = FS_proto.onwritestart = FS_proto.onprogress = FS_proto.onwrite = FS_proto.onabort = FS_proto.onerror = FS_proto.onwriteend = null; return saveAs; }( typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content )); // `self` is undefined in Firefox for Android content script context // while `this` is nsIContentFrameMessageManager // with an attribute `content` that corresponds to the window if (typeof module !== "undefined" && module.exports) { module.exports.saveAs = saveAs; } else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) { define("FileSaver.js", function() { return saveAs; }); }

地图geojson数据的实时获取与应用