使用MongoDB Java驱动程序将DBObject转换为POJO [英] Convert DBObject to a POJO using MongoDB Java Driver

问题描述

MongoDB似乎返回BSON / JSON对象。

MongoDB seems to return BSON/JSON objects.

我认为你肯定可以检索字符串，整数等值，然后可以保存作为POJO。

I thought that surely you'd be able to retrieve values as Strings, ints etc. which can then be saved as POJO.

我有一个DBObject（实例化为BasicDBObject）作为迭代列表的结果......（cur.next（））。

I have a DBObject (instantiated as a BasicDBObject) as a result of iterating over a list ... (cur.next()).

除了使用某种持久性框架之外，唯一的方法是将数据放入POJO以使用JSON serlialiser / deserialiser吗？

Is the only way (other than using some sort of persistence framework) to get the data into a POJO to use a JSON serlialiser/deserialiser?

我的方法如下所示：

public List<User> findByEmail(String email){
         DBCollection userColl;
         try {
            userColl = Dao.getDB().getCollection("users"); } catch (UnknownHostException e) { e.printStackTrace(); } catch (MongoException e) { e.printStackTrace();}
            DBCursor cur = userColl.find();
            List<User> usersWithMatchEmail = new ArrayList<User>();

            while(cur.hasNext()) {
               // this is where I want to convert cur.next() into a <User> POJO
               usersWithMatchEmail.add(cur.next());
            }
        return null;
    }

编辑：很明显，只需做这样的事情。

It's pretty obvious, just do something like this.

推荐答案

有一些java库可以帮助你：

There is a few java libs that can help you with it:

• Morhpia - http://code.google.com/p/morphia/


• MongoDB的Spring数据 - http：// www .springsource.org / spring-data / mongodb

• Morhpia - http://code.google.com/p/morphia/
• Spring Data for MongoDB - http://www.springsource.org/spring-data/mongodb

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