1. Query longitude and latitude according to address

1.1. Gaode map

It is recommended to use this. There are more free times per day and the concurrency is high

public Map<String, Object> getLatAndLngByAddress(String addr) {
        String address = "";
        try {
            address = java.net.URLEncoder.encode(addr,"UTF-8");
        } catch (UnsupportedEncodingException e1) {
            e1.printStackTrace();
        }
		//The key here can be applied on the official website of Gaode map. Don't use mine. (I deleted several of this key and can't let you use it)
        String url =  "https://restapi.amap.com/v3/geocode/geo?address= "+address + "&output=JSON&key=" + "1cc533db4482c9bc9daece853e2";

        URL myURL = null;
        URLConnection httpsConn = null;
        //Transcoding
        try {
            myURL = new URL(url);
        } catch (MalformedURLException e) {

        }
        StringBuffer sb = new StringBuffer();
        try {
            httpsConn = (URLConnection) myURL.openConnection();
            if (httpsConn != null) {
                InputStreamReader insr = new InputStreamReader(httpsConn.getInputStream(), "UTF-8");
                BufferedReader br = new BufferedReader(insr);
                String data = null;
                while ((data = br.readLine()) != null) {
                    sb.append(data);
                }
                insr.close();
            }
        } catch (IOException e) {

        }
        Map<String, Object> map = new HashMap<String, Object>();
    	//This is the data in json format
        JSONObject resultJson = JSON.parseObject(sb.toString());

        //Get longitude and latitude json data from Gaode map, exchange object and Array, and use Alibaba's package com alibaba. fastjson. json / jsonobject / jsonarray import package
        JSONArray geocodes = resultJson.getJSONArray("geocodes");
        JSONObject jsonObject = geocodes.getJSONObject(0);
        String location = jsonObject.getString("location");  //Longitude and latitude
        String district = jsonObject.getString("district");  //region

        String lng = StringUtils.substringBefore(location, ",");
        String lat = StringUtils.substringAfter(location, ",");

        map.put("lat", lat);
        map.put("lng", lng);
        map.put("area",district);
        return map;
    }

• Geocoding API service address

• Request parameters

• Return parameters

1.2 Baidu map

public Map<String, Object> getLatAndLngByAddress(String addr) {
    String address = "";
    try {
        address = java.net.URLEncoder.encode(addr,"UTF-8");
    } catch (UnsupportedEncodingException e1) {
        e1.printStackTrace();
    }

	//For ak here, you can apply on the official website of Baidu maps. Don't use mine (I deleted several of this ak and can't let you use it)
    String url = "http://api.map.baidu.com/geocoding/v3/?address="+ address + "&output=json&ak=" + "oKdLH6xcnuIeGvfuDwrYwyUH";

    URL myURL = null;
    URLConnection httpsConn = null;
    //Transcoding
    try {
        myURL = new URL(url);
    } catch (MalformedURLException e) {

    }
    StringBuffer sb = new StringBuffer();
    try {
        httpsConn = (URLConnection) myURL.openConnection();
        if (httpsConn != null) {
            InputStreamReader insr = new InputStreamReader(httpsConn.getInputStream(), "UTF-8");
            BufferedReader br = new BufferedReader(insr);
            String data = null;
            while ((data = br.readLine()) != null) {
                sb.append(data);
            }
            insr.close();
        }
    } catch (IOException e) {

    }
    Map<String, Object> map = new HashMap<String, Object>();
    JSONObject resultJson = JSON.parseObject(sb.toString());

    //Baidu map to obtain latitude and longitude
    JSONObject jsonArray = (JSONObject)resultJson.get("result");
    JSONObject locationObj = (JSONObject)jsonArray.get("location");
    //longitude
    String lng = (String)locationObj.get("lng");
    //latitude
    String lat = (String)locationObj.get("lat");

    map.put("lat", lat);
    map.put("lng", lng);
    return map;
}

• Geocoding

http://api.map.baidu.com/geocoding/v3/?address = No. 10, Shangdi 10th Street, Haidian District, Beijing & output = JSON & AK = your AK & callback = showlocation / / get request
//Note: currently v3 Version 0 interface document, v2 0 and previous versions cannot be used by new users since June 18, 2019. Old users can still use v2 0 and earlier versions request the implementation of reverse geocoding service. In order to ensure the user experience, it is recommended that you migrate to V3.0 as soon as possible Version 0.

• Request parameters

• Return result parameters

If it works for you, just praise it