发现个可以免费下载全国 geojson 数据的网站,推荐一下。

可下载的数据包含省级geojson行政边界数据、市级geojson行政边界数据、区/县级geojson行政边界数据、省市区县街道行政编码四级联动数据(可精确到乡镇/街道级)

geojson 数据下载地址:https://geojson.hxkj.vip

该项目 github 地址:https://github.com/TangSY/echarts-map-demo,喜欢的话,可以给个star哦

一、通过API接口,实时获取最新中国省市区县街道级乡镇级geoJSON格式地图数据,可用于Echarts地图展示

1、效果图展示

image
image

2、示例代码

 downloadMapCode() {// 下载mapCode数据
      let mapCode = [], cityMapCode = [], provinceMapCode = [], provinceList = [], cityList = [],
        districtList = [];
 
      provinceList = this.codeList.filter(item => {
        return item.level === 'province'
      })
      cityList = this.codeList.filter(item => {
        return item.level === 'city'
      })
      districtList = this.codeList.filter(item => {
        return item.level === 'district'
      })
 
      districtList.forEach(item => {
        mapCode.push({
          name: item.name,
          cityCode: item.code,
          fatherCode: `${item.code.substring(0, 4)}00`,
          children: []
        })
      })
 
      // 筛选出直辖市下面的区县
      let direct = mapCode.filter(item => {
        return item.fatherCode.includes('0000');
      })
 
      for (let i in cityList) {
        let children = []
        for (let j in mapCode) {
          if (mapCode[j].fatherCode == cityList[i].code) {
            children.push(mapCode[j])
          }
        }
        cityMapCode.push({
          name: cityList[i].name,
          cityCode: cityList[i].code,
          fatherCode: `${cityList[i].code.substring(0, 2)}0000`,
          children: children
        })
      }
      cityMapCode = cityMapCode.concat(direct);
 
      for (let i in provinceList) {
        let children = []
        for (let j in cityMapCode) {
          if (cityMapCode[j].fatherCode == provinceList[i].code) {
            children.push(cityMapCode[j])
          }
        }
        provinceMapCode.push({
          name: provinceList[i].name,
          cityCode: provinceList[i].code,
          fatherCode: '100000',
          children: children
        })
      }
 
      if (provinceMapCode.length === 0) return
      this.zip.file(`mapCode.json`, JSON.stringify(provinceMapCode));
      this.downloadTips = '文件打包压缩中...';
      this.zip.generateAsync({ type: "blob" })
        .then((content) => {
          saveAs(content, "mapCode.zip");
        });
    },
    // 下载全国地名和编码(不包含边界数据)
    downloadNameAndCode() {
      let opts = {
        subdistrict: 3, //返回下一级行政区
        showbiz: false, //最后一级返回街道信息
      };
      let 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]);
        }
      });
      let _this = this
      function getData(data) {
        let districtList = data.districtList;
 
        let blob = new Blob([JSON.stringify(districtList)], {
          type: 'text/plain;charset=utf-8',
        });
        let filename = '全国省市区县街道和编码(不包含边界数据)';
        _this.$ba.trackEvent('echartsMap', '全国省市区县街道和编码(不包含边界数据)下载', filename);
        saveAs(blob, `${filename}.json`); //filename
      }
    },
    echartsMapClick(params) {//地图点击事件
      this.$ba.trackEvent('echartsMap', '点击地图', `${params.data.name}-${params.data.cityCode}`);
      if (params.data.level == 'street') return;
      //清除地图上所有覆盖物
      for (var i = 0, l = this.polygons.length; i < l; i++) {
        this.polygons[i].setMap(null);
      }
      this.cityName = params.data.name;
      this.cityCode = params.data.cityCode;
      this.district.setLevel(params.data.level); //行政区级别
      this.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
      this.district.search(this.cityCode, (status, result) => {
        if (status === 'complete') {
          this.getData(result.districtList[0], params.data.level, this.cityCode);
        }
      });
    },
    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: this.map
        });
 
        districtExplorer.loadAreaNode(areaCode, (error, areaNode) => {
 
          if (error) {
            console.error(error);
            return;
          }
          let mapJson = {};
          mapJson.type = "FeatureCollection";
          mapJson.features = areaNode.getSubFeatures();
          this.loadMap(this.cityName, mapJson);
          this.geoJsonData = mapJson;
        });
      });
    },

二、通过获取到的数据整理了一系列联动数据,每天自动更新,免费下载

image

三、此项目这边是基于VUE开发的,看完之后有什么不懂的,可以留言说明.

项目GitHub地址:https://github.com/TangSY/echarts-map-demo
省市区县geojson边界数据下载地址:https://geojson.hxkj.vip/
乡镇街道geojson下载地址:https://map.hxkj.vip


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