用百度地图api计算两个地方的距离

/** * @author 距离计算 * */public class DistanceUtil {private static final String showLocationUrl = "http://api.map.baidu.com/geocoder/v2/?output=json&ak=RguGdBfvanKG10lrLHtUAtka&address=";private static final String waypointsDistanceUrl = "http://api.map.baidu.com/telematics/v3/distance?output=json&ak=RguGdBfvanKG10lrLHtUAtka&waypoints=";@SuppressWarnings("unchecked")public static Double twoCitysDistance(String startCityName, String endCityName){Double distance = 0.00;Map<String, Object> startShowLocation = JsoupTool.getJson(showLocationUrl+startCityName, null);Map<String, Object> startResultLocation = (Map<String, Object>) startShowLocation.get("result");Map<String, Object> startLocation = (Map<String, Object>) startResultLocation.get("location");String startLng = startLocation.get("lng").toString();String startLat =  startLocation.get("lat").toString();Map<String, Object> showLocation = JsoupTool.getJson(showLocationUrl+endCityName, null);Map<String, Object> endResultLocation = (Map<String, Object>) showLocation.get("result");Map<String, Object> endLocation = (Map<String, Object>) endResultLocation.get("location");String endLng = endLocation.get("lng").toString();String endLat = endLocation.get("lat").toString();String showWaypointsDistanceUrl = waypointsDistanceUrl+startLng+","+startLat+";"+endLng+","+endLat;Map<String, Object> waypointsDistance = JsoupTool.getJson(showWaypointsDistanceUrl, null);String distanceStr = waypointsDistance.get("results").toString();distanceStr = distanceStr.replaceAll("\\[", "").replaceAll("\\]", "");String[] distanceArray = distanceStr.split(","); distance = Double.valueOf(distanceArray[0]);return distance;}@SuppressWarnings("unchecked")public static void main(String[] args) {String startCityName = "河南省郑州市市辖区";String endCityName = "河南省许昌市市辖区";System.out.println(showLocationUrl+startCityName);Map<String, Object> startShowLocation = JsoupTool.getJson(showLocationUrl+startCityName, null);Map<String, Object> startResultLocation = (Map<String, Object>) startShowLocation.get("result");Map<String, Object> startLocation = (Map<String, Object>) startResultLocation.get("location");String startLng = startLocation.get("lng").toString();String startLat =  startLocation.get("lat").toString();Map<String, Object> showLocation = JsoupTool.getJson(showLocationUrl+endCityName, null);Map<String, Object> endResultLocation = (Map<String, Object>) showLocation.get("result");Map<String, Object> endLocation = (Map<String, Object>) endResultLocation.get("location");String endLng = endLocation.get("lng").toString();String endLat = endLocation.get("lat").toString();String showWaypointsDistanceUrl = waypointsDistanceUrl+startLng+","+startLat+";"+endLng+","+endLat;Map<String, Object> waypointsDistance = JsoupTool.getJson(showWaypointsDistanceUrl, null);String distanceStr = waypointsDistance.get("results").toString();distanceStr = distanceStr.replaceAll("\\[", "").replaceAll("\\]", "");String[] distanceArray = distanceStr.split(","); Double double1 = Double.valueOf(distanceArray[0]);System.out.println(new java.text.DecimalFormat("#").format(double1/1000/90));}}