2022年实时最新省市区县乡镇街道geojson行政边界数据获取方法

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

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）

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

1、效果图如下





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一系列联动数据，实现了每天自动更新

1、效果图



2、示例代码

downloadJson(nameType) {//geo文件下载
      this.nameType = nameType
      if (nameType === 'area') {
        this.$ba.trackEvent('echartsMap', '文件下载', '下载级联数据');
        this.$refs.dialog.show();
        return;
      }
      if (nameType === 'all') {
        this.$ba.trackEvent('echartsMap', '文件下载', '打包下载全部');
        this.$refs.dialog.show();
        return;
      }
      if (nameType === 'street') {
        this.$ba.trackEvent('echartsMap', '文件下载', '下载乡镇数据');
        this.$refs.streetDialog.show();
        return;
      }
      var blob = new Blob([JSON.stringify(this.geoJsonData)], { type: "text/plain;charset=utf-8" });
      let filename = this.cityName;
      if (nameType === 'code') {
        filename = this.cityCode;
      }
      this.$ba.trackEvent('echartsMap', '文件下载', filename);
      saveAs(blob, `${filename}.geoJson`);//filename
    },
    dialogConfirm() {
      if (this.nameType === 'area') {
        this.$refs.mapDataDialog.show();
      } else {
        this.downloadAllJson()
      }
    },
    downloadAllJson() {//一次打包下载所有的数据
      this.showTips();
      if (this.downloadTips != '下载geoJson数据') {
        return;
      }
      this.codeList = [];

      this.downloadTips = '获取数据中...';

      //                this.district.setLevel('country'); //行政区级别
      this.district.setExtensions('all');
      console.log('开始递归循环获取地区code..');
      this.loopSearch('中国');

    },
    loopSearch(code) {
      setTimeout(() => {
        this.district.search(code, (status, result) => {
          if (status == 'complete') {
            console.log(`${code}--获取成功`)
            for (let i in result.districtList[0].districtList) {
              this.codeList.push({
                name: result.districtList[0].districtList[i].name,
                code: result.districtList[0].districtList[i].adcode,
                level: result.districtList[0].districtList[i].level
              })
              //这边没想出来怎么判断数据是否全部加载完毕了，只能采用这种死办法
              //有更好解决方案的大佬，麻烦告诉我一下，邮箱t@tsy6.com
              //或者直接Github提交PR，在此不胜感激
              if (this.codeList.length >= 428) {// 为 3718 时，获取区县数据，428 省市数据
                console.log('code获取完成');
                this.isCodeListLoadComplete = true;
              }
              if (result.districtList[0].districtList[i].adcode && result.districtList[0].districtList[i].level != 'city' && result.districtList[0].districtList[i].level != 'district' && result.districtList[0].districtList[i].level != 'street') {
                this.loopSearch(result.districtList[0].districtList[i].adcode)
              }
            }
          } else {//第一遍查询出错，再次执行查询
            console.log(`${code}--第一次获取失败，正在尝试进行第二次获取`)
            this.district.search(code, (status, result) => {
              if (status == 'complete') {
                console.log(`${code}--第二次获取成功`)
                for (let i in result.districtList[0].districtList) {
                  this.codeList.push({
                    name: result.districtList[0].districtList[i].name,
                    code: result.districtList[0].districtList[i].adcode,
                    level: result.districtList[0].districtList[i].level
                  })
                  //这边没想出来怎么判断数据是否全部加载完毕了，只能采用这种死办法
                  //有更好解决方案的大佬，麻烦告诉我一下，邮箱t@tsy6.com
                  //或者直接Github提交PR，在此不胜感激
                  if (this.codeList.length >= 428) {
                    console.log('code获取完成');
                    this.isCodeListLoadComplete = true;
                  }
                }
              } else {
                console.log(`${code}--第二次获取失败，请联系email：t@tsy6.com`)
              }
            })
          }
        });
      }, 500)
    },
    loadAllGeoJson() {//通过codeList加载全部geoJson数据
      console.log('开始加载geoJson数据');
      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
        });
        let mapJson = {};
        for (let i in this.codeList) {
          setTimeout(() => {
            districtExplorer.loadAreaNode(this.codeList[i].code, (error, areaNode) => {
              if (error) {
                this.codeList[i].geo = 'error';
                console.log(`${this.codeList[i].name}--${this.codeList[i].code}，geo 数据获取失败，高德地图的锅^_^`)
              } else {
                mapJson.type = "FeatureCollection";
                mapJson.features = areaNode && areaNode.getSubFeatures() || '';
                this.codeList[i].geo = mapJson;
                console.log(`${this.codeList[i].level}--${this.codeList[i].name}--${this.codeList[i].code}，geo 数据获取成功，马上为你打包`)
              }

              if (this.codeList[i].level === 'province') {
                this.zip.file(`100000/${this.codeList[i].code}.geoJson`, JSON.stringify(mapJson));
              } else {
                this.zip.file(`100000/${this.codeList[i].code.substring(0, 2)}0000/${this.codeList[i].code}.geoJson`, JSON.stringify(mapJson));
              }

              if (this.codeList.every(item => item.geo)) {
                console.log('ziped');
                let readme = `\r\n
                                            项目源码github地址：https://github.com/TangSY/echarts-map-demo （欢迎star）
                                            \r\n
                                            个人空间：https://www.hxkj.vip （欢迎闲逛）
                                            \r\n
                                             Email：t@tsy6.com  （遇到问题可以反馈）
                                         `;
                this.zip.file(`readMe(sourceCode).txt`, readme);
                this.downloadTips = '文件打包压缩中...';
                this.zip.generateAsync({ type: "blob" })
                  .then((content) => {
                    saveAs(content, "geoJson数据包.zip");
                    this.downloadTips = '下载geoJson数据';
                    this.isCodeListLoadComplete = false;
                    this.$ba.trackEvent('echartsMap', '文件下载', '打包下载成功');
                  });
              }
            });
          }, 100 * i)
        }
      });
    },