Convert from LinkedHashMap to Json String
If you have access to some JSON library, it seems like that's the way to go.
If using org.json library, use public JSONObject(java.util.Map map):
String jsonString = new JSONObject(data).toString()If Gson, use the gson.toJson() method mentioned by @hellboy:
String jsonString = new Gson().toJson(data, Map.class);
You can use Gson library from Google to convert any object to JSON. Here is an example to convert LinkedHashMap to json -
Gson gson = new Gson();String json = gson.toJson(map,LinkedHashMap.class);
One of the com.mongodb.BasicDBObject constructors takes a Map as input. Then you just have to call the toString() on the BasicDBObject object.
Iterator one = (Iterator) friends.find(query).projection("{_id:0}").as(Object.class); while (one.hasNext()) { LinkedHashMap data= new LinkedHashMap(); data= (LinkedHashMap) one.next(); com.mongodb.BasicDBObject bdo = new com.mongodb.BasicDBObject(data); String json = bdo.toString(); }