1)mongo数据库中查询
{"book":"test","accounts.$id":{"$oid":"53d7c9c3e4b06304c19f4db9"}}
2)java 查询
Record search = new Record();
search.put("articleId", articleId);
search.put("accounts.$id", new ObjectId(accountId));
Record record = myFavorites.getRecord(search);
关联字段ref的查询方法
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转载自jackleechina.iteye.com/blog/2103874
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