基于Go语言开发调用高德API地址逆编码

最近公司有一个需求，有一批数据只有经纬度没有确定地址，现在需要根据经纬度补全地址，刚好高德提供这么一个API，可以拿来使用。

不过因为提供的数据的经纬度是大地2000坐标系，跟高德坐标系还不一样，需要进行一次转换。

我网上找到Go语言版本的坐标系转换工具类https://github.com/atopx/coord，可以根据go get github.com/yanmengfei/coord

编程请求

package main

import (
	"fmt"
	"io"
	"net/http"

	"github.com/yanmengfei/coord"
)

func main() {
	//WGS-84坐标系，GPS设备获取的经纬度坐标,地球坐标系，国际通用坐标系
	//GCJ-02坐标系，火星坐标系，WGS84坐标系加密后的坐标系；Google国内地图、高德、QQ地图等使用

	var location = "120.584495,30.14854"
	var lon, lat, _ = coord.LocationToFloat64Coord(location)
	fmt.Println("WGS84:", lon, lat)
	lon, lat = coord.WGS84toGCJ02(lon, lat)

	fmt.Println("GCJ02:", lon, lat)

	const requestUrl string = "https://restapi.amap.com/v3/geocode/regeo"

	request, err := http.NewRequest("GET", requestUrl, nil)
	if err != nil {
		fmt.Println("Error:", err)
		panic(err)
	}

	params := request.URL.Query()
	params.Add("key", "高德API密钥")
	params.Add("location", fmt.Sprintf("%f,%f", lon, lat))
	request.URL.RawQuery = params.Encode()

	client := &http.Client{}

	response, err := client.Do(request)
	if err != nil {
		fmt.Println("Error:", err)
		panic(err)
	}
	defer response.Body.Close()

	body, err := io.ReadAll(response.Body)
	if err != nil {
		panic(err)
	}

	fmt.Println("adress:" + string(body))
}

返回结果

adress:{"status":"1","regeocode":{"addressComponent":{"city":"绍兴市","province":"浙江省","adcode":"330603","district":"柯桥区","towncode":"330603010000","streetNumber":{"number":"67号","location":"120.588589,30.146249","direction":"北","distance":"38.4639","street":"园驾桥西路"},"country":"中国","township":"马鞍街道","businessAreas":[[]],"building":{"name":[],"type":[]},"neighborhood":{"name":[],"type":[]},"citycode":"0575"},"formatted_address":"浙江省绍兴市柯桥区马鞍街道园驾桥西路马鞍街道文化休闲公园"},"info":"OK","infocode":"10000"}