我在玩ScalikeJdbc图书馆。我想从 PostgreSQL 数据库中检索数据。我得到的错误对我来说很奇怪。即使我手动配置 CP：
val poolSettings = new ConnectionPoolSettings(initialSize = 100, maxSize = 100)
ConnectionPool.singleton("jdbc:postgresql://localhost:5432/test", "user", "pass", poolSettings)
我仍然看到错误。这是我的 DAO：
class CustomerDAO {
case class Customer(id: Long, firstname: String, lastname: String)
object Customer extends SQLSyntaxSupport[Customer]
val c = Customer.syntax("c")
def findById(id: Long)(implicit session: DBSession = Customer.autoSession) =
withSQL {
select.from(Customer as c)
}.map(
rs => Customer(
rs.int("id"),
rs.string("firstname"),
rs.string("lastname")
)
).single.apply()
}
应用程序：
object JdbcTest extends App {
val dao = new CustomerDAO
val res: Option[dao.Customer] = dao.findById(2)
}
我的application.conf档案
# PostgreSQL
db.default.driver = "org.postgresql.Driver"
db.default.url = "jdbc:postgresql://localhost:5432/test"
db.default.user = "user"
db.default.password = "pass"
# Connection Pool settings
db.default.poolInitialSize = 5
db.default.poolMaxSize = 7
db.default.poolConnectionTimeoutMillis = 1000
错误：
Exception in thread "main" java.lang.IllegalStateException: Connection pool is not yet initialized.(name:'default)
at scalikejdbc.ConnectionPool$$anonfun$get$1.apply(ConnectionPool.scala:57)
at scalikejdbc.ConnectionPool$$anonfun$get$1.apply(ConnectionPool.scala:55)
at scala.Option.getOrElse(Option.scala:120)
at scalikejdbc.ConnectionPool$.get(ConnectionPool.scala:55)
at scalikejdbc.ConnectionPool$.apply(ConnectionPool.scala:46)
at scalikejdbc.NamedDB.connectionPool(NamedDB.scala:20)
at scalikejdbc.NamedDB.db$lzycompute(NamedDB.scala:32)
我错过了什么？