这篇文章将为大家详细讲解有关Android应用中如何解析获取的json数据,文章内容质量较高,因此小编分享给大家做个参考,希望大家阅读完这篇文章后对相关知识有一定的了解。
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
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