效果：我在手机上打开微信小程序，自动显示出我当前所在的地理位置：

具体步骤：

1. 使用微信jssdk提供的getLocation API拿到经纬度；

2. 调用高德地图的api使用经纬度去换取地址的文字描述。

 wx.ready(() => {  wx.getLocation({  type: "gcj02",  success: function(res) {  var location =  "&location=" + res.longitude + "," + res.latitude;  ReservationService.getGeocode(location).then(response => {  if (  response.data.status === "1" &&  response.data.info === "OK"  ) {  self.country =  response.data.regeocode.addressComponent.country;  self.city = response.data.regeocode.addressComponent.city;  var express =  "/" +  self.country +  "|" +  response.data.regeocode.addressComponent.province +  "|" +  self.city +  "|" +  response.data.regeocode.addressComponent.district +  "|" +  response.data.regeocode.addressComponent.township +  "/g";  self.address = response.data.regeocode.formatted_address.replace(  eval(express),  ""  );  } else {  // get location error, plz input address  alert("无法获取地址信息,请稍后再试");  }  });  }  }); 

ReservationService.getGeocode的实现：

getGeocode(location) {

const key = '此处填入您高德地图app的key';

return axios.post('https://restapi.amap.com/v3/g...' + key + location);

}

看下面一个使用高德地图API将经纬度转换成文字描述的地址的例子，使用postman发送请求：

API响应：

 {  "status": "1",  "regeocode": {  "addressComponent": {  "city": [],  "province": "北京市",  "adcode": "110101",  "district": "东城区",  "towncode": "110101001000",  "streetNumber": {  "number": "44号",  "location": "116.39795,39.9097239",  "direction": "东北",  "distance": "117.874",  "street": "广场东侧路"  },  "country": "中国",  "township": "东华门街道",  "businessAreas": [  {  "location": "116.3998109423077,39.90717459615385",  "name": "天安门",  "id": "110101"  },  {  "location": "116.39981058278138,39.92383706953642",  "name": "景山",  "id": "110101"  },  {  "location": "116.4118112683418,39.91461494422115",  "name": "王府井",  "id": "110101"  }  ],  "building": {  "name": "天安门",  "type": "风景名胜;风景名胜相关;旅游景点"  },  "neighborhood": {  "name": [],  "type": []  },  "citycode": "010"  },  "formatted_address": "北京市东城区东华门街道天安门"  },  "info": "OK",  "infocode": "10000"  }