Convert JSON String to JSON Array

Question

Hello i call a service if it contains multiple objects it make list but when it contain only one object it return a single object not a list [] are missing , actually i want to convert them into java class using gson but in case of single exception it throw exception but when it contain list it work fine i actually need to convert my single gSON string to array ,please help me ..here is the string

    {
   "response":{
      "projects":{
         "project":{
            "ixWorkflow":1,
            "sEmail":"[email protected]",
            "sPhone":"",
            "ixProject":2,
            "ixPersonOwner":2,
            "fDeleted":false,
            "sProject":"Project Default",
            "fInbox":true,
            "sPersonOwner":"junaid"
         }
      }
   }
}

i want it to be like same as

   {
   "response":{
      "projects":{
         "project":[
            {
               "ixWorkflow":1,
               "sEmail":"[email protected]",
               "sPhone":"",
               "ixProject":6,
               "ixPersonOwner":2,
               "fDeleted":false,
               "sProject":"project 2",
               "fInbox":false,
               "sPersonOwner":"junaid"
            },
            {
               "ixWorkflow":1,
               "sEmail":"[email protected]",
               "sPhone":"",
               "ixProject":2,
               "ixPersonOwner":2,
               "fDeleted":false,
               "sProject":"Project Default",
               "fInbox":true,
               "sPersonOwner":"junaid"
            }
         ]
      }
   }
}

Please add more 'full stops' to your question. It seems more like reading a Virginia Woolf novel. — aquaraga
– aquaraga, Commented Dec 11, 2013 at 11:53
I second aquaraga's comment - please try and use punctuation, it will make your question easier to deciper. — ayahuasca
– ayahuasca, Commented Dec 11, 2013 at 12:06
You'd like to change "project" from a single element to an array? Well, either edit the JSON source to do that, or read it in with a simple parser, navigate through the Maps to "project", and replace the value of "project" with the appropriate List. — Hot Licks
– Hot Licks, Commented Dec 11, 2013 at 12:29

Community · Accepted Answer · 2017-05-23 10:32:18Z

1

With reference to https://stackoverflow.com/a/7284813/1105291

Please try below code before you pass json to Gson for object conversion, and please let me know if you get any error. Only posibility that I can see is exception at if.

    JSONObject jsonObject = new JSONObject(responseString);
    JSONObject projectsJsonObject = jsonObject.getJSONObject("response").getJSONObject("projects"); 
    if(projectsJsonObject.getJSONArray("project") == null)
    {
        JSONArray jsonArray = new JSONArray();
        jsonArray.put(projectsJsonObject.getJSONObject("project"));
        projectsJsonObject.put("project", jsonArray);

    }
    //Pass jsonObject to Gson

edited May 23, 2017 at 10:32

CommunityBot

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answered Dec 11, 2013 at 12:21

Chanchal Shelar

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3 Comments

Junaid Akhtar Over a year ago

JSONObject["project"] is not a JSONArr it throw this exception

Junaid Akhtar Over a year ago

I used projectsJsonObject.optJSONArray("project") instead of projectsJsonObject.getJSONArray("project") == null Anyways rest was fine thanks alot

Chanchal Shelar Over a year ago

@JunaidAkhtar I was expecting exception but at other place, but I'm glad it helped :)

Marcin Szymczak · Accepted Answer · 2013-12-11 13:03:14Z

0

Use Google Gson

JsonParser parser = new JsonParser();
JsonObject o = (JsonObject)parser.parse("{\"a\": \"A\"}");

answered Dec 11, 2013 at 13:03

Marcin Szymczak

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