根据经纬度查询地址并对获取的json数据进行解析

 

第一步：根据指定的URL从google 服务器上获得包含地址的json格式的数据(其还提供xml格式的，但json解析效率比xml高)

private static StringBuffer getJSONData(String urlPath){ try { URL url = new URL(urlPath); HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); httpURLConnection.setReadTimeout(5000); httpURLConnection.setRequestMethod("GET"); if(httpURLConnection.getResponseCode() == 200){ InputStream inputStream = httpURLConnection.getInputStream(); InputStreamReader isr = new InputStreamReader(inputStream); BufferedReader br = new BufferedReader(isr); String temp = null; StringBuffer jsonsb = new StringBuffer(); while((temp = br.readLine()) != null){ jsonsb.append(temp); } return jsonsb; } } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; }

 

传入经纬度作为参数

/** * 根据经纬度获得地址 * @param latitude * @param longitude * @return */ public static StringBuffer getCurrentAddressByGPS(long latitude,long longitude){ StringBuffer stringBuffer = new StringBuffer(); stringBuffer.append(GOOGLE_GPS_PREFIX).append(latitude).append(",") .append(longitude).append(GOOGLE_GPS_SUFFIX); return getJSONData(stringBuffer.toString()); }

 

第三，解析json数据：

 

public static boolean parseAddressJSON(StringBuffer sb){ try { if(sb != null){ JSONObject jsonAllData = new JSONObject(sb.toString()); /** * 获得一个长度为1的JSON数组,如:[{数据内容}] */ String placemarkStr = jsonAllData.getString("Placemark"); /** * 将placemarkStr数组类型字符串构造成一个JSONArray对象 */ JSONArray placemarkArray = new JSONArray(placemarkStr); /** * Placemark标签内容是一个长度为1的数组,获得数组的内容并转换成字符串 */ String jsonDataPlacemarkStr = placemarkArray.get(0).toString(); /** * 对上面得到的JSON数据类型的字符串(jsonDataPlacemarkStr)进行解析 */ JSONObject jsonDataPlacemark = new JSONObject(jsonDataPlacemarkStr); /** * 获得标签AddressDetails的JSON数据 */ String jsonAddressDetails = jsonDataPlacemark.getString("AddressDetails"); /** * 对上面得到的JSON数据类型的字符串(jsonAddressDetails)进行解析 */ JSONObject jsonDataAddressJDetails = new JSONObject(jsonAddressDetails); /** * 获得标签Country的JSON数据 */ String jsonCountry = jsonDataAddressJDetails.getString("Country"); /** * 对上面得到的JSON数据类型的字符串(jsonCountry)进行解析 */ JSONObject jsonDataCountry = new JSONObject(jsonCountry); /** * 对解析出来的感兴趣的数据进行封装 */ LewatekGPSAddress lewatekGPSAddress = new LewatekGPSAddress(); /** * 设置CountryName */ lewatekGPSAddress.setCountryName(jsonDataCountry.getString("CountryName")); /** * 设置CountryNameCode */ lewatekGPSAddress.setCountryNameCode(jsonDataCountry.getString("CountryNameCode")); /** * 获得标签AdministrativeArea的JSON数据 */ String jsonAdministrativeArea = jsonDataCountry.getString("AdministrativeArea"); /** * 对上面得到的JSON数据类型的字符串(jsonAdministrativeArea)进行解析 */ JSONObject jsonDataAdministrativeArea = new JSONObject(jsonAdministrativeArea); /** * 设置AdministrativeAreaName */ lewatekGPSAddress.setAdministrativeAreaName(jsonDataAdministrativeArea.getString("AdministrativeAreaName")); /** * 获得标签Locality的JSON数据 */ String jsonLocality = jsonDataAdministrativeArea.getString("Locality"); /** * 对上面得到的JSON数据类型的字符串(jsonLocality)进行解析 */ JSONObject jsonDataLocality = new JSONObject(jsonLocality); /** * 设置LocalityName */ lewatekGPSAddress.setLocalityName(jsonDataLocality.getString("LocalityName")); /** * 获得标签DependentLocality的JSON数据 */ String jsonDependentLocality = jsonDataLocality.getString("DependentLocality"); /** * 对上面得到的JSON数据类型的字符串(jsonDependentLocality)进行解析 */ JSONObject jsonDataDependentLocality = new JSONObject(jsonDependentLocality); lewatekGPSAddress.setDependentLocalityName(jsonDataDependentLocality.getString("DependentLocalityName")); Log.e(TAG,lewatekGPSAddress.toString()); return true; } } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } return false; }

 

 

从google服务器上获得的json数据（提取对我有用的数据：CountryName、LocalityName、AdministrativeAreaName、DependentLocalityName，即中国上海市上海市浦东新区（中国湖南省衡阳市衡山县这样的数据也能提取））：

{ "name": "31.20322202833381,121.59876351250254", "Status": { "code": 200, "request": "geocode" }, "Placemark": [ { "id": "p1", "address": "中国上海市浦东新区祖冲之路994号-1088号", "AddressDetails": { "Accuracy" : 8, "Country" : { "AdministrativeArea" : { "AdministrativeAreaName" : "上海市", "Locality" : { "DependentLocality" : { "DependentLocalityName" : "浦东新区", "Thoroughfare" : { "ThoroughfareName" : "祖冲之路994号-1088号" } }, "LocalityName" : "上海市" } }, "CountryName" : "中国", "CountryNameCode" : "CN" } }, "ExtendedData": { "LatLonBox": { "north": 31.2070152, "south": 31.2007199, "east": 121.6018752, "west": 121.5955799 } }, "Point": { "coordinates": [ 121.5986103, 31.2038252, 0 ] } } ] } Value [{"id":"p1","ExtendedData":{"LatLonBox":{"south":31.2007199,"west":121.5955799,"east":121.6018752,"north":31.2070152}},"address":"中国上海市浦东新区祖冲之路994号-1088号","Point":{"coordinates":[121.5986103,31.2038252,0]},"AddressDetails":{"Country":{"CountryNameCode":"CN","CountryName":"中国","AdministrativeArea":{"Locality":{"LocalityName":"上海市","DependentLocality":{"DependentLocalityName":"浦东新区","Thoroughfare":{"ThoroughfareName":"祖冲之路994号-1088号"}}},"AdministrativeAreaName":"上海市"}},"Accuracy":8}}] at Placemark of type org.json.JSONArray cannot be converted to JSONObject