Account.scala

case class Account(name:String, username:String, password:String)

App.scala

object App {

  def main(args:Array[String]) = {

    val ctx: ApplicationContext = new AnnotationConfigApplicationContext(classOf[MongoConfig])
    val mongoOperations: MongoOperations = ctx.getBean("mongoTemplate").asInstanceOf[MongoOperations]

  }

}

build.sbt

name := "SpringMongo"

version := "1.0"

scalaVersion := "2.9.1"

resolvers += "Spring Maven MILESTONE Repository" at "http://maven.springframework.org/milestone"

libraryDependencies ++= Seq(
        "org.mongodb" % "mongo-java-driver" % "2.6",
        "org.springframework" % "spring-core" % "3.0.5.RELEASE",
        "org.springframework" % "spring-context" % "3.0.5.RELEASE",
        "org.springframework.data" % "spring-data-mongodb" % "1.0.0.M4",
        "cglib" % "cglib" % "2.2"
)                

MongoConfig.scala

@Configuration
class MongoConfig extends AbstractMongoConfiguration {

  def getDatabaseName:String = "mydb"

  def mongo:Mongo = new Mongo("localhost")

}

Query.scala

import collection.JavaConversions._

val results = mongoOperations.find(
    new Query(Criteria where("name") is("Amir Moulavi")), classOf[Account], "accounts")
results.foreach(println)

SaveAccount.scala

val account = Account("Amir Moulavi", "amirmoulavi", "123456")

mongoOperations.save(account, "accounts")