MongoDB插入查询数据

插入： use keke 自动在写入数据后产生keke数据库。 j = { name : "mongo" }; {"name" : "mongo" } t = { x : 3 }; { "x" : 3 } db.things.save(j); db.things.save(t); 查询 db.things.find();{ "_id" : ObjectId("4c2209f9f3924d31102bd84a"), "name" : "m

插入：

use keke

自动在写入数据后产生keke数据库。

> j = { name : "mongo" }; {"name" : "mongo"} > t = { x : 3 }; { "x" : 3 } > db.things.save(j); > db.things.save(t);

查询

> db.things.find(); { "_id" : ObjectId("4c2209f9f3924d31102bd84a"), "name" : "mongo" } { "_id" : ObjectId("4c2209fef3924d31102bd84b"), "x" : 3 }

> var cursor = db.things.find(); > while (cursor.hasNext()) printjson(cursor.next()); { "_id" : ObjectId("501c7e5cab2f3c46faf8e68a"), "name" : "mongo" } { "_id" : ObjectId("501c7e65ab2f3c46faf8e68b"), "x" : 3 }