Remove empty object from json array using GSON

Question

{
  "ChangeRequests": [
    {}
  ]
}

Remove the empty model from JSON array using Gson. Because of it create the one model inside the list in the model all value is null using Gson

data class TestRequest(
@SerializedName("ChangeRequests")
val changeRequests: List<ChangeRequest>

)

val result = Gson().fromJson(jsonString,TestRequest::class.java)

Answer 1

simple code : it worked for me !

Type type = new TypeToken<Map<String, Object>>() {}.getType();
Map<String, Object> data = new Gson().fromJson(jsonString, type);

for (Iterator<Map.Entry<String, Object>> it = data.entrySet().iterator(); 
it.hasNext();) {
Map.Entry<String, Object> entry = it.next();
if (entry.getValue() == null) {
    it.remove();
} else if (entry.getValue().getClass().equals(ArrayList.class)) {
    if (((ArrayList<?>) entry.getValue()).size() == 0) {
        it.remove();
    }
 }
}

String json = new GsonBuilder().setPrettyPrinting().create().toJson(data);
System.out.println(json);