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How to retreive data from Json using java

hi guys i have json response like this
Response response = service.execute(requestSendToNS);
// JSONObject jsonResponse = new JSONObject(response);
//String data = jsonResponse.getString("id");
System.out.println("Response Body : " + response.getBody());
and here the result :
Response Body : [{"status":"success","message":"update success","id":"1404","internalid":2604},{"status":"failed","message":"bad location is already used in another location","id":1405}]
my question is how to getting value "id" from my json response ?
i have try use this code :
// JSONObject jsonResponse = new JSONObject(response);
//String data = jsonResponse.getString("id");
i also have use this
List responseObject = objectMapper.readValue(response.getBody(),List);
but i cannot mapping from json Array to object
but i cannot retreive value from id

Your response body is an array.
[{...},{...}]
That's why you can't get id
String data = jsonResponse.getString("id");
Please have a look JsonReader to read json as JsonArray
https://docs.oracle.com/javaee/7/api/javax/json/JsonReader.html#readObject--
JsonReader jsonReader = Json.createReader(new StringReader(response.getBody()));
JsonArray array = jsonReader.readArray();
JsonObject obj = array.getJsonObject(0);
String data = obj.getString("id");

First, you have to create a class that has the exact same structure as the JSON response, and then you can use ObjectMapper from jackson library to write the JSON to class and read the values from it.

Escaping slash and other characters when using JsonObject?

I did search on the internet but couldn't find a solution for me, this is the resulting JsonString when using Gson to convert my Object:
JSONObject obj = new JSONObject();
String tmp;
tmp = gson.toJson(request);
{"_Json":"{LastName=ho, BirthDate=2017/10/06 08:47:29, FirstName=hey, Password=1, Email=letsgo}","_Token":"","_UserID":0}
Thats the actual Value I want to have in my JsonObject too but when I put this JsonString in my JsonObject the simple / are now / and I have no clue how I can get rid of this because I want to send this JsonObject via Post to create a user:
obj = new JSONObject(tmp);
{"_Json":"{LastName=ho, BirthDate=2017\/10\/06 08:47:29, FirstName=hey, Password=1, Email=letsgo}","_Token":"","_UserID":0}
I had a similar problem with gson when converting it in a JsonString but this simply solved by using:
Gson gson = new GsonBuilder().disableHtmlEscaping().create();

Assistance parsing with gson (google json)

I have some JSON. With GSON, it always throws an error
Exception in thread "main" java.lang.IllegalStateException: Not a JSON Object:
[["Rank","Team","Qual Avg","Auto","Container","Coopertition","Litter","Tote","Played"],[1,1730,126.3,160,488,160,137,318,10],[2,1806,96.799999999999997,20,516,80,62,344,10],[3,4522,79.799999999999997,0,404,40,64,308,10],[4,2410,79.0,26,264,160,104,242,10],[5,1329,77.099999999999994,26,220,240,121,188,10],[6,1939,65.0,28,204,80,150,194,10],[7,2457,64.799999999999997,0,328,0,100,232,10],[8,1785,61.200000000000003,20,148,120,142,188,10],[9,4646,59.5,0,200,120,81,206,10],[10,1723,58.600000000000001,24,164,80,156,168,10],[11,5476,54.899999999999999,20,160,120,103,152,10],[12,5126,54.600000000000001,0,168,120,102,168,10],[13,1763,54.100000000000001,12,164,160,67,168,10],[14,1775,54.0,0,148,120,112,178,10],[15,4809,53.100000000000001,24,148,80,117,182,10],[16,1810,52.700000000000003,0,188,80,53,206,10],[17,5013,52.399999999999999,0,148,80,110,192,10],[18,1777,52.299999999999997,8,116,200,97,126,10],[19,1825,52.0,20,200,40,94,178,10],[20,1764,51.5,34,204,0,127,156,10],[21,2164,51.100000000000001,0,160,80,71,212,10],[22,1737,50.399999999999999,10,132,120,74,172,10],[23,3528,50.100000000000001,0,156,80,81,200,10],[24,938,49.100000000000001,20,188,40,115,152,10],[25,5098,48.799999999999997,4,180,80,64,178,10],[26,1987,47.700000000000003,20,76,80,49,258,10],[27,2167,47.5,28,128,80,81,186,10],[28,2335,47.299999999999997,0,128,40,127,178,10],[29,1288,44.600000000000001,12,128,40,68,204,10],[30,5119,44.200000000000003,26,108,80,108,134,10],[31,1802,43.899999999999999,6,136,80,35,188,10],[32,5268,43.600000000000001,26,92,40,110,174,10],[33,4959,43.0,4,136,80,86,140,10],[34,1982,42.799999999999997,12,116,80,88,162,10],[35,2357,41.399999999999999,0,112,120,76,160,10],[36,4455,40.700000000000003,26,168,0,87,132,10],[37,2874,40.5,0,104,80,93,146,10],[38,2560,40.200000000000003,6,132,40,134,96,10],[39,937,39.899999999999999,0,112,80,69,150,10],[40,2353,39.700000000000003,6,100,80,69,178,10],[41,1997,36.0,0,84,120,38,130,10],[42,5082,35.600000000000001,20,64,40,124,114,10],[43,1710,35.299999999999997,0,76,40,57,192,10],[44,3485,34.899999999999999,20,92,40,71,136,10],[45,3792,32.5,0,104,40,71,128,10],[46,2001,32.0,0,108,0,76,154,10],[47,5141,31.800000000000001,0,76,80,50,144,10],[48,1984,31.399999999999999,4,84,40,44,154,10],[49,1827,30.800000000000001,0,64,0,112,156,10],[50,2345,30.600000000000001,0,136,40,32,150,10],[51,1847,29.300000000000001,24,108,0,57,116,10],[52,1769,27.600000000000001,12,100,0,54,134,10],[53,1994,27.0,0,28,120,72,86,10],[54,2346,25.0,0,64,40,64,106,10]]
I want to get make an int for the rank. I checked it on JSONLint, and it is valid.
Here is my code:
Gson gson = new GsonBuilder().serializeNulls().create();
System.out.println("Connecting to The Blue Alliance");
String sURL = "http://www.thebluealliance.com/api/v2/event/2015mokc/rankings?X-TBA-App-Id=frc1810:alex-webber:v01";
URL url = new URL(sURL);
HttpURLConnection request = (HttpURLConnection) url.openConnection();
request.connect();
JsonParser jp = new JsonParser();
JsonElement root = jp.parse(new InputStreamReader((InputStream) request
.getContent()));
JsonObject rootobj = root.getAsJsonObject();
String key = rootobj.get("key").toString();

That is because it is not an object type. From the Javadoc for JsonObject:
A class representing an object type in Json...
The type you are getting as a response is an array type, so you need to use JsonArray instead of JsonObject:
JsonArray jsonArray = root.getAsJsonArray();

how to access json array element in java

i am getting json array in the output.i want to access the specific key elments from the response .how can i ..?
ResponseEntity <String> respone;
try {
response =
restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class);
String response=response.getBody();
JSONObject res = new JSONObject();
res.put("result", response);
System.out.println(res);
int len=res.size();
System.out.println(len);
JSONParser parser=new JSONParser();
Object obj = parser.parse(response);
JSONArray array = (JSONArray)obj;
System.out.println(array.get(0)); }
this is respponse format i m getting in output.i want to access the bid from the response.how can i?
[
{
"bName": "abc",
"bId": "n86nbnhbnghgy76"
}
]

Decode your string using JSONArray(String json) constructor:
String response = response.getBody();
JSONArray res = new JSONArray(response);
String bId = res.getJSONObject(0).get("bId");
System.out.println(bid);

EDIT
Try following:
String response=response.getBody();
JSONObject res = new JSONObject();
System.out.println(res);
int len=res.size();
System.out.println(len);
JSONParser parser=new JSONParser();
Object obj = parser.parse(response);
JSONArray array = (JSONArray)obj;
res=(JSONObject)array.get(0);
System.out.println(res.get("bId"));
Output :
n86nbnhbnghgy76
This one is based on your code and with Simple Json Library.

casting String to JSONObject

I have a json response from server, I get as string, and want to cast to JSONObject (import org.json.JSONObject;)
this is my casting:
JSONObject responseJson = new JSONObject(responseString);
and this is what I get:
responseString = {"code":0,"type":"success","description":null,"data":{"path":"http:........"}}
responseJson = {"class":"class java.lang.StringBuilder"}
does anyone knows why is responseJson not with correct values?
I can do
responseJson.getString("class")
but what I want to do is
responseJson.getString("type")

Try this way with json-simple
String jsonString = "{\"code\":0,\"type\":\"success\",\"description\":null,\"data\":
{\"path\":\"http:........\"}}";
org.json.simple.JSONObject json =(org.json.simple.JSONObject) new JSONParser()
.parse(jsonString);
System.out.println(json.get("data"));