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/geocode/regeo?key=’ + 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" }
