List conditions = new ArrayList();
BSONObject obj = new BasicBSONObject();
obj.put("$match", "{\"status\":1}");
conditions.add(obj);
// BSONObject obj2 = new BasicBSONObject();
// obj2.put("$group", "{_id:\"$dept_id\",\"totalmoney\":{\"$sum\":\"$money\"}}");
// conditions.add(obj2);
DBCursor cursor = cl.aggregate(conditions);
while(cursor.hasNext()) {
System.out.println(cursor.getCurrent());
}