如何通过mongoDB的键名检索值？

find()

db.CollectionName.find({},{HomeTown:1})

在Java中，它将是：

BasicDBObject query = new BasicDBObject();BasicDBObject field = new BasicDBObject();field.put("HomeTown", 1);DBCursor cursor = db.getCollection(collectionName).find(query,field);while (cursor.hasNext()) {    BasicDBObject obj = (BasicDBObject) cursor.next();    result.add(obj.getString("HomeTown"));}