I am working on an Android application. In my app I have to convert a string to JSON Object, then parse the values. I checked for a solution in Stackoverflow and found similar issue here link
The solution is like this
`{"phonetype":"N95","cat":"WP"}`
JSONObject jsonObj = new JSONObject("{\"phonetype\":\"N95\",\"cat\":\"WP\"}");
I use the same way in my code . My string is
{"ApiInfo":{"description":"userDetails","status":"success"},"userDetails":{"Name":"somename","userName":"value"},"pendingPushDetails":[]}
string mystring= mystring.replace("\"", "\\\"");
And after replace I got the result as this
{\"ApiInfo\":{\"description\":\"userDetails\",\"status\":\"success\"},\"userDetails\":{\"Name\":\"Sarath Babu\",\"userName\":\"sarath.babu.sarath babu\",\"Token\":\"ZIhvXsZlKCNL6Xj9OPIOOz3FlGta9g\",\"userId\":\"118\"},\"pendingPushDetails\":[]}
when I execute JSONObject jsonObj = new JSONObject(mybizData);
I am getting the below JSON exception
org.json.JSONException: Expected literal value at character 1 of
Please help me to solve my issue.
Remove the slashes:
String json = {"phonetype":"N95","cat":"WP"};
try {
JSONObject obj = new JSONObject(json);
Log.d("My App", obj.toString());
} catch (Throwable t) {
Log.e("My App", "Could not parse malformed JSON: \"" + json + "\"");
}
This method works
String json = "{\"phonetype\":\"N95\",\"cat\":\"WP\"}";
try {
JSONObject obj = new JSONObject(json);
Log.d("My App", obj.toString());
Log.d("phonetype value ", obj.getString("phonetype"));
} catch (Throwable tx) {
Log.e("My App", "Could not parse malformed JSON: \"" + json + "\"");
}
try this:
String json = "{'phonetype':'N95','cat':'WP'}";
You just need the lines of code as below:
try {
String myjsonString = "{\"phonetype\":\"N95\",\"cat\":\"WP\"}";
JSONObject jsonObject = new JSONObject(myjsonString );
//displaying the JSONObject as a String
Log.d("JSONObject = ", jsonObject.toString());
//getting specific key values
Log.d("phonetype = ", jsonObject.getString("phonetype"));
Log.d("cat = ", jsonObject.getString("cat");
}catch (Exception ex) {
StringWriter stringWriter = new StringWriter();
ex.printStackTrace(new PrintWriter(stringWriter));
Log.e("exception ::: ", stringwriter.toString());
}
just try this ,
finally this works for me :
//delete backslashes ( \ ) :
data = data.replaceAll("[\\\\]{1}[\"]{1}","\"");
//delete first and last double quotation ( " ) :
data = data.substring(data.indexOf("{"),data.lastIndexOf("}")+1);
JSONObject json = new JSONObject(data);
To get a JSONObject or JSONArray from a String I've created this class:
public static class JSON {
public Object obj = null;
public boolean isJsonArray = false;
JSON(Object obj, boolean isJsonArray){
this.obj = obj;
this.isJsonArray = isJsonArray;
}
}
Here to get the JSON:
public static JSON fromStringToJSON(String jsonString){
boolean isJsonArray = false;
Object obj = null;
try {
JSONArray jsonArray = new JSONArray(jsonString);
Log.d("JSON", jsonArray.toString());
obj = jsonArray;
isJsonArray = true;
}
catch (Throwable t) {
Log.e("JSON", "Malformed JSON: \"" + jsonString + "\"");
}
if (object == null) {
try {
JSONObject jsonObject = new JSONObject(jsonString);
Log.d("JSON", jsonObject.toString());
obj = jsonObject;
isJsonArray = false;
} catch (Throwable t) {
Log.e("JSON", "Malformed JSON: \"" + jsonString + "\"");
}
}
return new JSON(obj, isJsonArray);
}
Example:
JSON json = fromStringToJSON("{\"message\":\"ciao\"}");
if (json.obj != null) {
// If the String is a JSON array
if (json.isJsonArray) {
JSONArray jsonArray = (JSONArray) json.obj;
}
// If it's a JSON object
else {
JSONObject jsonObject = (JSONObject) json.obj;
}
}
Using Kotlin
val data = "{\"ApiInfo\":{\"description\":\"userDetails\",\"status\":\"success\"},\"userDetails\":{\"Name\":\"somename\",\"userName\":\"value\"},\"pendingPushDetails\":[]}\n"
try {
val jsonObject = JSONObject(data)
val infoObj = jsonObject.getJSONObject("ApiInfo")
} catch (e: Exception) {
}
Here is the code, and you can decide which
(synchronized)StringBuffer or
faster StringBuilder to use.
Benchmark shows StringBuilder is Faster.
public class Main {
int times = 777;
long t;
{
StringBuffer sb = new StringBuffer();
t = System.currentTimeMillis();
for (int i = times; i --> 0 ;) {
sb.append("");
getJSONFromStringBuffer(String stringJSON);
}
System.out.println(System.currentTimeMillis() - t);
}
{
StringBuilder sb = new StringBuilder();
t = System.currentTimeMillis();
for (int i = times; i --> 0 ;) {
getJSONFromStringBUilder(String stringJSON);
sb.append("");
}
System.out.println(System.currentTimeMillis() - t);
}
private String getJSONFromStringBUilder(String stringJSONArray) throws JSONException {
return new StringBuffer(
new JSONArray(stringJSONArray).getJSONObject(0).getString("phonetype"))
.append(" ")
.append(
new JSONArray(employeeID).getJSONObject(0).getString("cat"))
.toString();
}
private String getJSONFromStringBuffer(String stringJSONArray) throws JSONException {
return new StringBuffer(
new JSONArray(stringJSONArray).getJSONObject(0).getString("phonetype"))
.append(" ")
.append(
new JSONArray(employeeID).getJSONObject(0).getString("cat"))
.toString();
}
}
May be below is better.
JSONObject jsonObject=null;
try {
jsonObject=new JSONObject();
jsonObject.put("phonetype","N95");
jsonObject.put("cat","wp");
String jsonStr=jsonObject.toString();
} catch (JSONException e) {
e.printStackTrace();
}
Related
My current response is
{"response":"validation error","status":"failure","code":400,"errors":["You can not add multiple items with different categories"]}
My current code is :
String errorBody = response.errorBody().string();
JSONObject jsonObject = new JSONObject(errorBody.trim());
jsonObject = jsonObject.getJSONObject("errors");
Iterator<String> keys = jsonObject.keys();
String errors = "";
while (keys.hasNext()) {
String key = keys.next();
JSONArray arr = jsonObject.getJSONArray(key);
for (int i = 0; i < arr.length(); i++) {
errors += key + " : " + arr.getString(i) + "\n";
}
}
I am trying to get the error code to see if it matches specific keywords to handle the response
i think your current code its not to good,better way for u is:
create modelClass for your json output and in retrofit calls write:
if (model.status=='failure' || model.code==400){
print(response.message) // or something like this
}
You can look through the following code snippet
call.enqueue(new Callback<PagedResponse<NotificationModel>>() {
#RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
#Override
public void onResponse(Call<PagedResponse<NotificationModel>> call, Response<PagedResponse<NotificationModel>> response) {
if (response.isSuccessful()) {
if (response.code() == 200) {
try {
PagedResponse<NotificationModel> notifications = (PagedResponse<NotificationModel>) response.body();
tvRecordsCount.setText("Total "+response.body().getTotal()+" Notifications ");
showNotification(notifications);
} catch (Exception e){
e.printStackTrace();
}
} else {
showToast(getApplicationContext(), "Server Error");
}
}
}
#Override
public void onFailure(Call<PagedResponse<NotificationModel>> call, Throwable t) {
showToast(getApplicationContext(), t.getMessage());
}
});
I managed to get it working with this code:
String errors = "";
String errorBody = response.errorBody().string();
JsonParser parser = new JsonParser();
JsonObject rootObj = parser.parse(errorBody.trim()).getAsJsonObject();
JsonArray errorArray = rootObj.getAsJsonArray("errors");
for (JsonElement pa : errorArray) {
errors = pa.getAsString();
}
I have a dynamic JSON string that looks like this:
{"_id":"7","food_name":"Fiber Balance"},{"_id":"8","food_name":"Sport +"}
I am able to get the first name, but not the second one. This is my code for getting the first (Fiber Balance):
// Dynamic text
TextView textViewDynamicText = (TextView)getActivity().findViewById(R.id.textViewDynamicText);
String stringJSON = textViewDynamicText.getText().toString();
String stringFoodname = "";
try {
JSONObject jsonObject = new JSONObject(stringJSON);
Iterator<String> iter = jsonObject.keys();
while (iter.hasNext()) {
String key = iter.next();
try {
stringFoodname = jsonObject.getString("food_name");
Toast.makeText(getContext(), stringFoodname, Toast.LENGTH_LONG).show();
} catch (JSONException e) {
// Something went wrong!
}
}
} catch (org.json.JSONException e) {
// Something went wrong!
}
How can I go to the next item in the json string?
If you have multiple data than you need to use Array,if you want to get all data from your json use below trick,
String json = "{\"_id\":\"7\",\"food_name\":\"Fiber Balance\"},{\"_id\":\"8\",\"food_name\":\"Sport +\"}";
json = "[" + json + "]";
try {
JSONArray array = new JSONArray(json);
for (int i = 0; i < array.length(); i++) {
JSONObject object = array.getJSONObject(i);
String foodName = object.getString("food_name");
Log.e("FoodName:", foodName);
}
} catch (JSONException e) {
e.printStackTrace();
Log.e("error", "json", e);
}
i made a asynctask routine to comunicate to all my webservices that looks as follows:
protected String[] doInBackground(String... params) {
String parameterString = params[0];
// effectieve http request met de parameters toegevoegd
HttpClient client = new DefaultHttpClient();
HttpGet aanvraag = new HttpGet(server + parameterString);
// foutanalyse van de http request
try
{
HttpResponse antwoord = client.execute(aanvraag);
StatusLine statuslijn = antwoord.getStatusLine();
int statuscode = statuslijn.getStatusCode();
if(statuscode != 200){
Log.i("statuscode verzending", "statuscode= "+ statuscode);
return null;
}
InputStream jsonStream = antwoord.getEntity().getContent();
BufferedReader reader= new BufferedReader(new InputStreamReader(jsonStream));
StringBuilder builder = new StringBuilder();
String lijn;
while((lijn = reader.readLine())!= null){
builder.append(lijn);
}
String jsonData = builder.toString();
// hier beginnen we met de json data te ontmantelen
JSONArray json = new JSONArray(jsonData);
String[] data = new String[35];
Log.i("jsonparser", "lengte geretourde data " + json.length());
for (int i = 0; i < json.length(); i++)
{
data[i] = json.getString(i).toString();
}
return data;
}
catch (ClientProtocolException e){
e.printStackTrace();
}
catch (IOException e){
e.printStackTrace();
}
catch (JSONException e) {
e.printStackTrace();
}
return null;
}
i use the routine everytime i connect to a webservice for my app, (i have about 15 of them)
all these webservices are made (and used) by the programs my software supplier made
now i would like to connect to them with my android app
some of them are working
others don't
what i found out already in my search for this failure:
some jsondata is returned in the form of:
[
"42416",
" ",
" ",
" "
]
other webservices return data as:
true
but the ones i am strugling with the most are looking like:
{
"z00": "1 ",
"z01": 10000,
"z02": "18/06/2010",
"z03": "A",
"z04": "0000",
"z05": 7735,
"z06": "VANNUYSE BVBA",
"z07": "DEEFA",
"z08": 17170,
"z09": "AFLEVEREN HELI IN GEBRUIK",
"z10": "0000",
"z11": "8770 ",
"z12": "INTER ",
"z13": "HELI ",
"z14": "CPCD25 - C240 ",
"z15": "48182 ",
"z16": "",
"z17": "N",
"z18": "0030",
"z19": 0,
"z20": "X",
"z21": " ",
"z22": "J",
"z23": "",
"z24": 0,
"z25": "22/06/2010",
"z26": 16854,
"z27": 0,
"z28": "AFLEVEREN IN GEBRUIK",
"z29": " "
}
how should i form my asynctask routine so she is able to work for all routines?
because my routine works fine now for the first type of data but at 3th type i get an error (didn't tried yet for 2nd type) :
JSONObject cannot be converted to JSONArray
thanks already for al your help guys
If you don't know what(jsonObject or jsonArray) is coming, you may try something like this:
try {
JSONObject jsonObject = new JSONObject(jsonData);
// handle jsonObject
} catch (JSONException e) {
// Try to parse it to a JSONAray.
// Also you can check the exception message here to determine if jsonArray conversion is wanted
try {
JSONArray jsonArray = new JSONArray(jsonData);
// handle jsonArray
} catch (JSONException e) {
// something which is not JsonObject or JsonArray!
}
}
Or try this:
Object jsonAsObject = new JSONTokener(jsonData).nextValue();
if (jsonAsObject instanceof JSONObject) {
// it is JSONObject
JSONObject jsonObject = (JSONObject) jsonAsObject;
} else if (jsonAsObject instanceof JSONArray) {
// it is JSONArray
JSONArray jsonArray = (JSONArray) jsonAsObject;
}
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Sending and Parsing JSON in Android
I have a JSON result in the following format which JSON Lint shows this as a Valid Response.
My question is: how do I accesss the content of "reportId0" value "164", "reportId1" value 157,reportId2 value 165, etc are all dynamic values?
My sample code for accessing value of properties.How to get Value reportid And add allvalue in Arraylist?
"properties": {
"link": "",
"approvalsReportCount": 3,
"reportName0": "srcapprovals",
"reportId0": 164,
"reportName1": "Approvals",
"reportId1": 157,
"requests_report_id": "163",
"requests_report_name": "EG approvals",
"reportName2": "fulfillment",
"reportId2": 165
}
This is the best way i found it to get ReportId value.
Below is My code
JSONObject jObj = new JSONObject(result);
JSONObject jsonResultArray = jObj.getJSONObject("results");
JSONObject pro_object = jsonResultArray.getJSONObject("properties");
Iterator keys = pro_object.keys();
while(keys.hasNext()) {
String currentDynamicKey = (String)keys.next();
String value = pro_object.getString(currentDynamicKey);
String upToEightCharacters = currentDynamicKey.substring(0, Math.min(currentDynamicKey.length(), 8));
if(upToEightCharacters.startsWith("reportId"))
{
Log.v("key"," new report ID key " + currentDynamicKey);
Log.v("key"," new report ID key " + pro_object.getString(currentDynamicKey) );
}
}
you can use this
public ArrayList<String> getReportIds() {
boolean isContinue = true;
JSONObject json;
String tag = "reportId";
int i = 0;
ArrayList<String> repIdList = new ArrayList<String>();
JSONObject prop = null;
try {
json = new JSONObject("<your json string>");
prop = json.getJSONObject("properties");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
while (isContinue) {
String repId = "";
try {
repId = prop.getString(tag + i);
repIdList.add(repId);
i++;
} catch (JSONException e) {
isContinue = false;
e.printStackTrace();
}
}
return repIdList;
}
You can Try This!!
try {
JSONObject jObj = new JSONObject(result);
JSONObject jsonResultArray = jObj.getJSONObject("results");
Log.v("log_tag","json result Array : "+ jsonResultArray);
JSONObject pro_object = jsonResultArray.getJSONObject("properties");
Iterator keys = pro_object.keys();
while(keys.hasNext()) {
// loop to get the dynamic key
String currentDynamicKey = (String)keys.next();
String value = pro_object.getString(currentDynamicKey);
approvaldto_Key = new All_Approval_Key_dto();
String upToEightCharacters = currentDynamicKey.substring(0, Math.min(currentDynamicKey.length(), 8));
if(upToEightCharacters.startsWith("reportId"))
{
approvaldto_Key.requestId = pro_object.getString(currentDynamicKey);
fetchrecursUserData.add(approvaldto_Key);
}
}
}
catch (JSONException e) {
e.printStackTrace();
}
return fetchrecursUserData;
}
You can try below code
String serial= jsonObject.getJSONObject("response").getString("serialNumber");
or
JSONObject json;
try {
json = new JSONObject(buffer.toString());
String accessToken = json.getString("access_token");
return accessToken;
} catch (JSONException e) {
Log.e("Podcast", "There was an error", e);
}
Following is My Json File:-
"Restaurants":{
"8":{
"Res_name":"Purple Cafe and Wine Bar",
"foodtype":"American, Wine",
"city":"Seattle",
"state":"WA",
"latitude":"0",
"longitude":"0"
},
"9":{
"Res_name":"Quinn's",
"foodtype":"American, Pubs",
"city":"Seattle",
"state":"WA",
"latitude":"0",
"longitude":"0"
},
"19":{
"Res_name":"Dahlia Lounge",
"foodtype":"American",
"city":"Seattle",
"state":"WA",
"latitude":"0",
"longitude":"0"
},
},
I am Using below code for json parsing:-
try {
JSONObject jsonObj = new JSONObject(res);
JSONObject mRestaurant = jsonObj.getJSONObject("Restaurants");
String mResult = jsonObj.getString("Result");
System.out.println("mRestaurant is:- " + mRestaurant);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
The mRestaurant Value is below:-
{"487":{"state":"WA","Res_name":"SAM Taste","longitude":"0","latitude":"0","foodtype":"American","city":"Seattle"},"332":{"state":"WA","Res_name":"Luna Park Cafe","longitude":"0","latitude":"0","foodtype":"American","city":"Seattle"},"35":{"state":"WA","Res_name":"Restaurant Zoe","longitude":"0","latitude":"0","foodtype":"American, Bar","city":"Seattle"},"
but what is the next step for getting Res_Name, foodtype from above response.
Any Help would be appreciated.
The below code is next step for json parsing.
public void getdata() {
String res = mWebRequest.performGet(Constants.url+ "restaurants.php? action=searchRestaurant&lat=0&lon=0&foodtype="+ mEdttxtSearch.getText().toString() + "&state="+ mEdttxtSearch.getText().toString() + "&city="+ mEdttxtSearch.getText().toString()+ "&devType=Android");
System.out.println("res is:- " + res);
if (res != null) {
try {
JSONObject jsonObj = new JSONObject(res);
JSONObject mRestaurants = jsonObj.getJSONObject("Restaurants");
String mResult = jsonObj.getString("Result");
if (jsonObj.has("Restaurants")) {
Iterator<Object> keys = mRestaurants.keys();
while (keys.hasNext()) {
String key = (String) keys.next();
JSONObject obj = new JSONObject();
obj = mRestaurants.getJSONObject(key);
mRes_Name.add(obj.getString("Res_name"));
mLatitude.add(obj.getString("latitude"));
mLongitude.add(obj.getString("longitude"));
mState.add(obj.getString("state"));
mCity.add(obj.getString("city"));
mFood_Type.add(obj.getString("foodtype"));
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Use the get() method:
String mRestaurant = jsonObj.get("487").get("Res_name");
use gson for the same, as it supports direct conversion from json to java and java to json, please see following link:
Converting JSON to Java