Android應(yīng)用中如何解析獲取的json數(shù)據(jù)

發(fā)布時(shí)間：2020-11-24 17:10:08

來源：億速云

閱讀：107

作者：Leah

這篇文章將為大家詳細(xì)講解有關(guān)Android應(yīng)用中如何解析獲取的json數(shù)據(jù)，文章內(nèi)容質(zhì)量較高，因此小編分享給大家做個(gè)參考，希望大家閱讀完這篇文章后對(duì)相關(guān)知識(shí)有一定的了解。

第一步：根據(jù)指定的URL從google 服務(wù)器上獲得包含地址的json格式的數(shù)據(jù)(其還提供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;

}

傳入經(jīng)緯度作為參數(shù)

/**

* 根據(jù)經(jīng)緯度獲得地址

* @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數(shù)據(jù)：

public static boolean parseAddressJSON(StringBuffer sb){

try {

if(sb != null){

JSONObject jsonAllData = new JSONObject(sb.toString());

/**

* 獲得一個(gè)長(zhǎng)度為1的JSON數(shù)組,如:[{數(shù)據(jù)內(nèi)容}]

*/

String placemarkStr = jsonAllData.getString("Placemark");

/**

* 將placemarkStr數(shù)組類型字符串構(gòu)造成一個(gè)JSONArray對(duì)象

*/

JSONArray placemarkArray = new JSONArray(placemarkStr);

/**

* Placemark標(biāo)簽內(nèi)容是一個(gè)長(zhǎng)度為1的數(shù)組,獲得數(shù)組的內(nèi)容并轉(zhuǎn)換成字符串

*/

String jsonDataPlacemarkStr = placemarkArray.get(0).toString();

/**

* 對(duì)上面得到的JSON數(shù)據(jù)類型的字符串(jsonDataPlacemarkStr)進(jìn)行解析

*/

JSONObject jsonDataPlacemark = new JSONObject(jsonDataPlacemarkStr);

/**

* 獲得標(biāo)簽AddressDetails的JSON數(shù)據(jù)

*/

String jsonAddressDetails = jsonDataPlacemark.getString("AddressDetails");

/**

* 對(duì)上面得到的JSON數(shù)據(jù)類型的字符串(jsonAddressDetails)進(jìn)行解析

*/

JSONObject jsonDataAddressJDetails = new JSONObject(jsonAddressDetails);

/**

* 獲得標(biāo)簽Country的JSON數(shù)據(jù)

*/

String jsonCountry = jsonDataAddressJDetails.getString("Country");

/**

* 對(duì)上面得到的JSON數(shù)據(jù)類型的字符串(jsonCountry)進(jìn)行解析

*/

JSONObject jsonDataCountry = new JSONObject(jsonCountry);

/**

* 對(duì)解析出來的感興趣的數(shù)據(jù)進(jìn)行封裝

*/

LewatekGPSAddress lewatekGPSAddress = new LewatekGPSAddress();

/**

* 設(shè)置CountryName

*/

lewatekGPSAddress.setCountryName(jsonDataCountry.getString("CountryName"));

/**

* 設(shè)置CountryNameCode

*/

lewatekGPSAddress.setCountryNameCode(jsonDataCountry.getString("CountryNameCode"));

/**

* 獲得標(biāo)簽AdministrativeArea的JSON數(shù)據(jù)

*/

String jsonAdministrativeArea = jsonDataCountry.getString("AdministrativeArea");

/**

* 對(duì)上面得到的JSON數(shù)據(jù)類型的字符串(jsonAdministrativeArea)進(jìn)行解析

*/

JSONObject jsonDataAdministrativeArea = new JSONObject(jsonAdministrativeArea);

/**

* 設(shè)置AdministrativeAreaName

*/

lewatekGPSAddress.setAdministrativeAreaName(jsonDataAdministrativeArea.getString("AdministrativeAreaName"));

/**

* 獲得標(biāo)簽Locality的JSON數(shù)據(jù)

*/

String jsonLocality = jsonDataAdministrativeArea.getString("Locality");

/**

* 對(duì)上面得到的JSON數(shù)據(jù)類型的字符串(jsonLocality)進(jìn)行解析

*/

JSONObject jsonDataLocality = new JSONObject(jsonLocality);

/**

* 設(shè)置LocalityName

*/

lewatekGPSAddress.setLocalityName(jsonDataLocality.getString("LocalityName"));

/**

* 獲得標(biāo)簽DependentLocality的JSON數(shù)據(jù)

*/

String jsonDependentLocality = jsonDataLocality.getString("DependentLocality");

/**

* 對(duì)上面得到的JSON數(shù)據(jù)類型的字符串(jsonDependentLocality)進(jìn)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;

}

從google服務(wù)器上獲得的json數(shù)據(jù)(提取對(duì)我有用的數(shù)據(jù)：CountryName、LocalityName、AdministrativeAreaName、DependentLocalityName，即中國(guó)上海市上海市浦東新區(qū)(中國(guó)湖南省衡陽(yáng)市衡山縣這樣的數(shù)據(jù)也能提取))：

{

"name": "31.20322202833381,121.59876351250254",

"Status": {

"code": 200,

"request": "geocode"

},

"Placemark": [ {

"id": "p1",

"address": "中國(guó)上海市浦東新區(qū)祖沖之路994號(hào)-1088號(hào)",

"AddressDetails": {

"Accuracy" : 8,

"Country" : {

"AdministrativeArea" : {

"AdministrativeAreaName" : "上海市",

"Locality" : {

"DependentLocality" : {

"DependentLocalityName" : "浦東新區(qū)",

"Thoroughfare" : {

"ThoroughfareName" : "祖沖之路994號(hào)-1088號(hào)"

}

},

"LocalityName" : "上海市"

}

},

"CountryName" : "中國(guó)",

"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":"中國(guó)上海市浦東新區(qū)祖沖之路994號(hào)-1088號(hào)","Point":{"coordinates":[121.5986103,31.2038252,0]},"AddressDetails":{"Country":{"CountryNameCode":"CN","CountryName":"中國(guó)","AdministrativeArea":{"Locality":{"LocalityName":"上海市","DependentLocality":{"DependentLocalityName":"浦東新區(qū)","Thoroughfare":{"ThoroughfareName":"祖沖之路994號(hào)-1088號(hào)"}}},"AdministrativeAreaName":"上海市"}},"Accuracy":8}}] at Placemark of type org.json.JSONArray cannot be converted to JSONObject

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