JSON オブジェクトの解析中に JSON 例外が発生する理由がわかりません。URLからJASONを取得(Http GET)しています。関連するすべてのコードは次のとおりです。これ以上のコードが必要な場合はお知らせください。
doInBackground Async メソッド:
@Override
protected Void doInBackground(Void... arg0)
{
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(URL,ServiceHandler.GET);
Log.w("Rakshak", "the jaon String is:"+jsonStr);// this prints the JASON in the log and it looks fine
// I am not pasting it in coz it is HUGE
if (jsonStr != null)
{
try {
JSONObject jsonObj = new JSONObject(jsonStr);
Log.w("Rakshak", "in the try before the JASON");
// Getting JSON Array node
kingtide = jsonObj.getJSONArray("JASON");
// looping through All Kingtide events
for (int i = 0; i < kingtide.length(); i++)
{
JSONObject k = kingtide.getJSONObject(i);
String date = "Date Range:"+k.getString(KEY_DATE);
String lat = k.getString(KEY_LAT);
String lng = k.getString(KEY_LNG);
String loc = "Location of the Kingtide:"+k.getString(KEY_LOC)+", "+k.getString(KEY_STATE);
String temp_Time = k.getString(KEY_TIME);
String[] time_parts = temp_Time.split("T");
String time = "Kingtide at:"+time_parts[1]+" "+getYear(time_parts[0]);
// tmp hashmap for single kingtide event
HashMap<String, String> kt = new HashMap<String, String>();
// adding each child node to HashMap key => value
kt.put(KEY_DATE, date);
kt.put(KEY_LAT, lat);
kt.put(KEY_LNG, lng);
kt.put(KEY_LOC, loc);
kt.put(KEY_TIME, time);
Log.w("Rakshak", KEY_DATE+KEY_LAT+KEY_LNG+KEY_LOC+KEY_TIME);
// adding the kingtide to the kingtide hash map. this will be used to fill up the list view
kingTideList.add(kt);
}
} catch (JSONException e) {
Log.e("Rakshak", "JSONException "+e.getMessage()); // this prints "JSONException Value [{"Latitude":-19.9078861,"Location":"Abbot....." and the rest of the JASON(all of it)
}
}
else
Log.w("Rakshak", "JASON string is null");
return null;
}
サービス ハンドラ クラス:
public class ServiceHandler {
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
public ServiceHandler() {
}
/*
* Making service call
* @url - url to make request
* @method - http request method
* */
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
/*
* Making service call
* @url - url to make request
* @method - http request method
* @params - http request params
* */
public String makeServiceCall(String url, int method,
List<NameValuePair> params) {
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
// Checking http request method type
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
// adding post params
if (params != null) {
httpPost.setEntity(new UrlEncodedFormEntity(params));
}
httpResponse = httpClient.execute(httpPost);
} else if (method == GET) {
// appending params to url
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
httpEntity = httpResponse.getEntity();
response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
Log.e("Rakshak", "UnsupportedEncodingException "+e.getMessage());
} catch (ClientProtocolException e) {
Log.e("Rakshak", "ClientProtocolException "+e.getMessage());
} catch (IOException e) {
Log.e("Rakshak", "IOException "+e.getMessage());
}
Log.w("Rakshak", "In the service handeler: this is a test");
return response;
}
}
スタックトレースの一部:
03-14 10:09:56.861: E/Rakshak(7037): JSONException Value [{"Latitude":-19.9078861,"Location":"Abbot Point","Longitude":148.08467259999998,"DateRange":"1–3 January 2014","HighTideOccurs":"2014-01-02T09:47:00","State":"QLD"},{"Latitude":-27.477819,"Location":"Brisbane
JASON ファイルの URL は " http://witnesskingtides.azurewebsites.net/api/kingtides "です。
注: XML ファイルのように見えますが、 JASON です。必要に応じて、バリデーター/ビューアーを介して実行し、自分で確認してください。
なぜJASON例外が発生するのか、どうすれば修正できるのかという質問です。