高德地图WebAPI：行驶距离测量

参考API

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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);}}

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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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