无法使用Anorm读取Integer列

Question

When I try to run (from Play Framework):

import play.api.db.DB
import anorm._
import org.joda.time.DateTime
import AnormExtensions._ // http://stackoverflow.com/a/11975107/11236
import play.api.Play.current
import java.util.Date

var stream = SQL("SELECT amiId, created, version FROM Amis WHERE created = {maxCreated}")
    .on("maxCreated" -> new Date(maxCreated.getMillis))
    .apply()

val map: Stream[Ami] = stream.map { ami =>
    val s: String = ami[String]("amiId")
    val date: Date = ami[Date]("created")

    // The following line throws a compilation error
    var version: Integer = ami[Integer]("version")

    new Ami(s, new DateTime(date), version)
}

I get a compilation error : could not find implicit value for parameter c: anorm.Column[Integer]

What's the problem here? If I can read a Date , why can't I read an Integer ?

Answer 1

问题是我使用java java.lang.Integer而不是scala.Int 。

Answer 2

Such missing numeric conversion was fixed with release of Play 2.3. You may want upgrade to.