高德地图WebAPI：行驶距离测量

来源：互联网发布：物品识别软件编辑：程序博客网时间：2024/05/17 02:47

参考API

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection;import net.sf.json.JSONArray;import net.sf.json.JSONObject;public class Test {    /*     * Java http 请求     */    public static String loadJson (String url) {        StringBuilder json = new StringBuilder();        try {            //下面那条URL请求返回结果无中文，可不转换编码格式            URL urlObject = new URL(url);            URLConnection uc = urlObject.openConnection();            BufferedReader in = new BufferedReader(new InputStreamReader(uc.getInputStream()));            String inputLine = null;            while ( (inputLine = in.readLine()) != null) {                json.append(inputLine);            }            in.close();        } catch (MalformedURLException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return json.toString();    }    /*     * 高德地图WebAPI : 行驶距离测量     */    public static String distance(String origins,String destination) {        int type = 1;        String url = "http://restapi.amap.com/v3/distance?"                + "origins="+origins                +"&destination="+destination                +"&type="+type                +"&key=你申请的key";        JSONObject jsonobject = JSONObject.fromObject(loadJson(url));        System.out.println(jsonobject.toString());        JSONArray resultsArray = jsonobject.getJSONArray("results");        JSONObject distanceObject = resultsArray.getJSONObject(0);        String distance = distanceObject.getString("distance");        return distance;    }    public static void main(String[] args) {        //格式：   经度,纬度              //注意：高德最多取小数点后六位        String origin = "116.398140"+","+"26.059369";        String destination = "116.374028"+","+"39.907586";        String distance = distance(origin, destination);        System.out.println(distance);    }}

附:返回的Json结果

{    "infocode": "10000",    "results": [        {            "duration": "78900",            "distance": "1809936",            "origin_id": "1",            "dest_id": "1"        }    ],    "status": "1",    "info": "OK"}

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