Get String value of json array in a json

Question

For the below Json payload I'am trying to get the first array element of email_address. However using the below code I get email address but with the array bracket and quotes like: ["[email protected]"]. I need only the email address text. First element array.

Payload:

{
   "valid":{
      "email_addresses":[
         "[email protected]"
      ]  
   }
}

Code:

JSONParser parser = new JSONParser();
JSONObject jsonObject = (JSONObject) parser.parse(new FileReader(jsonfilepath));
JSONObject jsonObjects = (JSONObject) parser.parse(jsonObject.get("valid").toString());
String email = jsonObjects.get("email_addresses").toString();
System.out.println("Email address:"+email);

jeprubio · Accepted Answer · 2020-03-20 10:03:29Z

4

You could use JSONArray to get the array values:

JSONArray emailAddresses = (JSONArray) jsonObjects.get("email_addresses");
String email = emailAddresses.getJSONObject(0).toString()
System.out.println("Email address: " + email);

Even though I strongly encourage using gson to parse json instead of doing this way, it makes life easier.

edited Mar 20, 2020 at 10:03

answered Mar 20, 2020 at 9:58

jeprubio

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4 Comments

rkosegi Over a year ago

Why are you parsing json string to json, just to convert it back to string to parse it again? parser.parse(jsonObject.get("valid").toString())

jeprubio Over a year ago

@rkosegi well, that part it's not the code I changed. It was in the question. But yes, it makes no sense, I'll update it

rkosegi Over a year ago

then don't put it in an answer. It's non-sense

jeprubio Over a year ago

Ok, I'll only put in the answer the code to add / update

kosta.dani · Accepted Answer · 2020-03-20 10:06:42Z

3

Maybe this unitTest could help you

   @Test
   public void test() throws JSONException, FileNotFoundException {
      JSONObject json = new JSONObject(new JSONTokener(new FileInputStream(new File(jsonfilepath))));
      JSONObject valid = (JSONObject) json.get("valid");
      Object emailAdresses = valid.get("email_addresses");
      if (emailAdresses instanceof JSONArray) {
         JSONArray emailAdressArray = (JSONArray) emailAdresses;
         Object firstEmailAdress = emailAdressArray.get(0);
         System.out.println(firstEmailAdress.toString());
      }
   }

answered Mar 20, 2020 at 10:06

kosta.dani

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