用java实现地理位置转换，坐标转换，行驶距离计算（高德地图）

参考    http://blog.csdn.net/techcarlos/article/details/52107902

  请在高德地图开发中心申请 WEB的key

import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.URI; import java.net.URL; import java.net.URLConnection; import java.net.URLEncoder; import net.sf.json.JSONArray; import net.sf.json.JSONObject; /** * @author lx * @version 2016年11月16日 上午11:39:40 */ public class MapUtil { public static String getHttpResponse(String allConfigUrl) { BufferedReader in = null; StringBuffer result = null; try { // url请求中如果有中文，要在接收方用相应字符转码 URI uri = new URI(allConfigUrl); URL url = uri.toURL(); URLConnection connection = url.openConnection(); connection.setRequestProperty("Content-type", "text/html"); connection.setRequestProperty("Accept-Charset", "utf-8"); connection.setRequestProperty("contentType", "utf-8"); connection.connect(); result = new StringBuffer(); // 读取URL的响应 in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8")); String line; while ((line = in.readLine()) != null) { result.append(line); } return result.toString(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return null; } /** * 高德地图WebAPI : 驾车路径规划 计算两地之间行驶的距离(米)
 * String origins:起始坐标
 * String destination:终点坐标 */ public static String distance(String origins, String destination) { int strategy = 0;// 0速度优先（时间）1费用优先（不走收费路段的最快道路）2距离优先 3不走快速路 4躲避拥堵 // 5多策略（同时使用速度优先、费用优先、距离优先三个策略计算路径）。6不走高速 7不走高速且避免收费 // 8躲避收费和拥堵 9不走高速且躲避收费和拥堵 String url = "http://restapi.amap.com/v3/direction/driving?" + "origin=" + origins + "&destination=" + destination + "&strategy=" + strategy + "&extensions=base&key=您的key"; JSONObject jsonobject = JSONObject.fromObject(getHttpResponse(url)); JSONArray pathArray = jsonobject.getJSONObject("route").getJSONArray("paths"); String distanceString = pathArray.getJSONObject(0).getString("distance"); return distanceString; } /** * 高德地图WebAPI : 地址转化为高德坐标 
 * String address：高德地图地址 * */ public static String coordinate(String address) { try { address = URLEncoder.encode(address, "utf-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } String url = "http://restapi.amap.com/v3/geocode/geo?address=" + address + "&output=json&key=您的key"; JSONObject jsonobject = JSONObject.fromObject(getHttpResponse(url)); JSONArray pathArray = jsonobject.getJSONArray("geocodes"); String coordinateString = pathArray.getJSONObject(0).getString("location"); return coordinateString; } /** * 高德地图WebAPI : gps坐标转化为高德坐标 
 * String coordsys：高德地图坐标 * */ public static String convert(String coordsys) { try { coordsys = URLEncoder.encode(coordsys, "utf-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } String url = "http://restapi.amap.com/v3/assistant/coordinate/convert?locations=" + coordsys + "&coordsys=gps&output=json&key=您的key"; JSONObject jsonobject = JSONObject.fromObject(getHttpResponse(url)); String coordinateString = jsonobject.getString("locations"); return coordinateString; } // 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 = "104.043390" + "," + "30.641982"; // String destination = "106.655347" + "," + "31.786691"; // String address = "成都市武侯区"; // // String coordinate = coordinate(address); // String distance = distance(origin, destination); // // System.out.println("行驶距离-----" + distance); // System.out.println("地址转换高德坐标-----" + coordinate); // // } // public static void main(String[] args) { // String coordsys = "116.481499,39.990475"; // String moordsys =convert(coordsys); // System.out.println(moordsys); // } }