MongoDb: How to save directly from json

gistfile1.java

		Mongo mongo = new Mongo("127.0.0.1",27017);
		DB db = mongo.getDB("yabe");
		DBCollection collection = db.getCollection("pt");
		DBCursor csr = collection.find();
		for (DBObject dbObject : csr) {
			System.out.println(dbObject);
		}
		WriteResult save = collection.save(new BasicDBObject() {{
			this.append("user", 333);
		}});
		save = collection.save(new BasicDBObject() {{
			this.append("user", "ikeda");
		}});
		System.out.println(save.toString());
		WSRequest url = play.libs.WS.url("https://api.github.com/gists/958406");
		final HttpResponse httpResponse = url.get();
		System.out.println(httpResponse.getString());
		final Object parse = JSON.parse(httpResponse.getString().replaceAll("\\.", "_"));
		
		collection.save((DBObject) parse);