Scala操作MongoDB

// Maven

<dependencies>

    <dependency>

        <groupId>org.mongodb</groupId> <artifactId>casbah</artifactId> <version>3.1.1</version>

    </dependency>

</dependencies>

// Sbt

libraryDependencies += "org.mongodb" %% "casbah" % "3.1.1"

// Lib

 import com.mongodb.casbah.Imports._

// CONNECTION

//val mongoClient= MongoClient("localhost", 27017)

val uri = MongoClientURI("mongodb://localhost:27017/")

val mongoClient = MongoClient(uri)

// USE COLLECTION

val db = mongoClient("test")

db.collectionNames

val coll = db("abc")

// INSERT

coll.insert(MongoDBObject("name" -> "user1", "email" -> "[email protected]"))

coll.insert(MongoDBObject("name" -> "user1", "email" -> "[email protected]"))

coll.insert(MongoDBObject("name" -> "user1", "email" -> "[email protected]"))

// SELECT

coll.count() //读取总记录数

coll.find().foreach(println)

val query1 =MongoDBObject("name" -> "user1")

coll.findOne(query1)

// UPDATE

val update1 = MongoDBObject("email" -> "[email protected]")

val result1 = coll.update(query1, update1)

// upsert=true,如果不存在就insert

// val result = coll.update( query, update, upsert=true )

// 批量更新

val query3 = MongoDBObject("name" -> "user2", "email" -> "[email protected]")

val update3 = $set("email" -> "[email protected]")

val result3 = coll.update(query3, update3, multi=true)

// DELETE

coll.remove(MongoDBObject("name" -> "user2" ))