{ "_id": { "$oid": "50a5e1cd703d7e9c65326bf9"
}, "name":"arthur", "tele": "001-837475"
"address":{ "country":"us", "state" : "CA", "city" : "LA"
}
}
}我的mongodb中存了很多這樣的數(shù)據(jù).我有這樣的檢索需求.查找所有來(lái)自加州的人.在shell里是這樣query: db.test.find({"address.state":"CA"})并且能夠返回正確的結(jié)果.
1 回答
侃侃爾雅
TA貢獻(xiàn)1801條經(jīng)驗(yàn) 獲得超16個(gè)贊
Mongo db = new Mongo("localhost", 27017);
DBCollection coll = db.getCollection("collectionname");
DBObject query = new BasicDBObject("address.state","CA");
DBCursor cursor = coll.find(query); while(cursor.hasNext()){ System.out.println(cursor.next());
} cursor.close()- 1 回答
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