Slick无法连接到mssql数据库

Question

我想使用 Slick (3.2.3) 连接到 MSSQL 数据库。

目前我的项目如下

在application.conf，我有

somedbname = {
  driver = "slick.jdbc.SQLServerProfile$"
  db {
    host = "somehost"
    port = "someport"
    databaseName = "Recupel.Datawarehouse"
    url = "jdbc:sqlserver://"${somedbname.db.host}":"${somedbname.db.port}";databaseName="${somedbname.db.databaseName}";"
    user = "someuser"
    password = "somepassword"
  }
}

"somehost" 看起来像 XX.X.XX.XX，其中 X 是数字。

我的build.sbt包含

name := "test-slick"

version := "0.1"

scalaVersion in ThisBuild := "2.12.7"

libraryDependencies ++= Seq(
  "com.typesafe.slick" %% "slick" % "3.2.3",
  "com.typesafe.slick" %% "slick-hikaricp" % "3.2.3",
  "org.slf4j" % "slf4j-nop" % "1.6.4",
  "com.microsoft.sqlserver" % "mssql-jdbc" % "7.0.0.jre10"
)

具有 "main" 对象的文件包含

import slick.basic.DatabaseConfig
import slick.jdbc.JdbcProfile
import slick.jdbc.SQLServerProfile.api._

import scala.concurrent.Await
import scala.concurrent.duration._


  val dbConfig: DatabaseConfig[JdbcProfile] = DatabaseConfig.forConfig("somedbname")

  val db: JdbcProfile#Backend#Database = dbConfig.db

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

      val future = db.run(sql"SELECT * FROM somettable".as[(Int, String, String, String, String,
        String, String, String, String, String, String, String)])

      println(Await.result(future, 10.seconds))

    } finally {
      db.close()
    }


  }

}

根据我能找到的所有文档，这应该足以连接到数据库。但是，当我运行这个时，我得到

[error] (run-main-0) java.sql.SQLTransientConnectionException: somedbname.db - Connection is not available, request timed out after 1004ms.
[error] java.sql.SQLTransientConnectionException: somedbname.db - Connection is not available, request timed out after 1004ms.
[error]         at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:548)
[error]         at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:186)
[error]         at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:145)
[error]         at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:83)
[error]         at slick.jdbc.hikaricp.HikariCPJdbcDataSource.createConnection(HikariCPJdbcDataSource.scala:14)
[error]         at slick.jdbc.JdbcBackend$BaseSession.<init>(JdbcBackend.scala:453)
[error]         at slick.jdbc.JdbcBackend$DatabaseDef.createSession(JdbcBackend.scala:46)
[error]         at slick.jdbc.JdbcBackend$DatabaseDef.createSession(JdbcBackend.scala:37)
[error]         at slick.basic.BasicBackend$DatabaseDef.acquireSession(BasicBackend.scala:249)
[error]         at slick.basic.BasicBackend$DatabaseDef.acquireSession$(BasicBackend.scala:248)
[error]         at slick.jdbc.JdbcBackend$DatabaseDef.acquireSession(JdbcBackend.scala:37)
[error]         at slick.basic.BasicBackend$DatabaseDef$$anon.run(BasicBackend.scala:274)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error]         at java.base/java.lang.Thread.run(Thread.java:844)
[error] Nonzero exit code: 1

也许相关但也很烦人，当我第二次（及后续）运行这段代码时，我得到以下错误：

Failed to get driver instance for jdbcUrl=jdbc:sqlserver://[...]

这迫使我每次都杀死并重新加载 sbt。

我做错了什么？值得注意的是：我可以使用来自 valentina 等软件的相同凭据连接到数据库。

Answer 1

按照@MarkRotteveel 的建议，按照 this link，我找到了解决方案。

首先，我明确设置了驱动程序，添加了行

driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver"

在db字典中，在password = "somepassword"之后。

其次，默认超时（一秒后）对我来说似乎太短了，因此我添加了这一行 connectionTimeout = "30 seconds" 在上一个 driver 行之后，仍在 db 字典中。

现在可以了。

Slick无法连接到mssql数据库

Slick can't connect to mssql database

sql-server

scala

jdbc

slick