How to iterate over a JSONObject?

Question

I use a JSON library called JSONObject (I don\'t mind switching if I need to).

I know how to iterate over JSONArrays, but when I parse JSO

Answer 1

I made a small recursive function that goes through the entire json object and saves the key path and its value.

// My stored keys and values from the json object
HashMap myKeyValues = new HashMap();

// Used for constructing the path to the key in the json object
Stack key_path = new Stack();

// Recursive function that goes through a json object and stores 
// its key and values in the hashmap 
private void loadJson(JSONObject json){
    Iterator json_keys = json.keys();

    while( json_keys.hasNext() ){
        String json_key = (String)json_keys.next();

        try{
            key_path.push(json_key);
            loadJson(json.getJSONObject(json_key));
       }catch (JSONException e){
           // Build the path to the key
           String key = "";
           for(String sub_key: key_path){
               key += sub_key+".";
           }
           key = key.substring(0,key.length()-1);

           System.out.println(key+": "+json.getString(json_key));
           key_path.pop();
           myKeyValues.put(key, json.getString(json_key));
        }
    }
    if(key_path.size() > 0){
        key_path.pop();
    }
}