使用 slick.jdbc.MySQLProfile 将 Slick 3.2.1 连接到 MySQL

Question

SO 上有 100 多个关于如何将 slick 连接到 Mysql 的线程，并且所有线程都使用 "slick.driver.MySQLDriver$"。我相信这个 class 现在已被弃用并已被 "slick.jdbc.MySQLProfile"

取代

这里的产品文档已经说明了这一点

http://slick.lightbend.com/doc/3.2.1/api/#slick.driver.package

所以为了使用新的 class 我将我的配置定义为

mysql = {
  driver = "slick.jdbc.MySQLProfile"
  properties = {
    driver = "com.mysql.cj.jdbc.Driver"
    url  = "jdbc:mysql://localhost:3306/foo"
    user = "foo"
    password = "bar"
  }
}

Database.forConfig("mysql")

但我得到一个例外

java.lang.RuntimeException: Failed to load class of driverClassName slick.jdbc.MySQLProfile
        at com.zaxxer.hikari.HikariConfig.setDriverClassName(HikariConfig.java:323)
        at slick.jdbc.hikaricp.HikariCPJdbcDataSource$.$anonfun$forConfig(HikariCPJdbcDataSource.scala:31)
        at slick.jdbc.hikaricp.HikariCPJdbcDataSource$.$anonfun$forConfig$adapted(HikariCPJdbcDataSource.scala:31)
        at scala.Option.map(Option.scala:146)
        at slick.jdbc.hikaricp.HikariCPJdbcDataSource$.forConfig(HikariCPJdbcDataSource.scala:31)

我尝试了许多其他组合，但似乎对新 class 没有任何效果。那么当 slick.driver.MySQLDriver$ 被弃用时，现在正确的连接方式是什么？

这是我的 libraryDependencies 来自 build.sbt

"com.typesafe.slick" %% "slick" % "3.2.1",
"com.typesafe.slick" %% "slick-hikaricp" % "3.2.1",
"com.typesafe.slick" %% "slick-codegen" % "3.2.1",
"mysql" % "mysql-connector-java" % "5.1.34",

是的，我确实需要连接池。

编辑：根据下面的建议，我将配置更改为

mysql = {
  profile = "slick.jdbc.MySQLProfile$"
  properties = {
    driver = "com.mysql.cj.jdbc.Driver"
    url  = "jdbc:mysql://local:3306/foo"
    user = "foo"
    password = "bar"
  }
}

但现在我得到错误

java.lang.IllegalArgumentException: dataSource or dataSourceClassName or jdbcUrl is required.
        at com.zaxxer.hikari.HikariConfig.validate(HikariConfig.java:786)
        at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:67)
        at slick.jdbc.hikaricp.HikariCPJdbcDataSource$.forConfig(HikariCPJdbcDataSource.scala:58)
        at slick.jdbc.hikaricp.HikariCPJdbcDataSource$.forConfig(HikariCPJdbcDataSource.scala:21)

Answer 1

documentation 建议将其放入您的配置中：

profile = "slick.jdbc.MySQLProfile$"

注意行尾的 $。

此外，将以下内容添加到 enable connection pooling：

dataSourceClass = "slick.jdbc.DatabaseUrlDataSource"

Answer 2

如果有人需要，这里是完整的工作配置

mysql = {
  profile = "slick.jdbc.MySQLProfile$"
  dataSourceClass = "slick.jdbc.DatabaseUrlDataSource"
  properties = {
    driver = "com.mysql.cj.jdbc.Driver"
    url  = "jdbc:mysql://localhost:3306/foo"
    user = "foo"
    password = "bar"
  }
}

满build.sbt

"com.typesafe.slick" %% "slick" % "3.2.1",
"com.typesafe.slick" %% "slick-hikaricp" % "3.2.1",
"com.typesafe.slick" %% "slick-codegen" % "3.2.1",
"mysql" % "mysql-connector-java" % "5.1.34",

连接建立使用

Database.forConfig("mysql")

Answer 3

使用 HikariCP 池

application.conf

slick {
  profile = "slick.jdbc.MySQLProfile$"
  db {
    connectionPool = "HikariCP"
    url = "jdbc:mysql://127.0.0.1/abc"
    user = "user"
    password = "passabc"
    driver = "com.mysql.cj.jdbc.Driver"
    numThreads = 5
    maxConnections = 5
    minConnections = 1
  }
}

build.sbt

"com.typesafe.slick" %% "slick" % slickVersion,
"com.typesafe.slick" %% "slick-hikaricp" % slickVersion,
"mysql" % "mysql-connector-java" % "8.0.15",

使用 slick.jdbc.MySQLProfile 将 Slick 3.2.1 连接到 MySQL

Connecting Slick 3.2.1 to MySQL using slick.jdbc.MySQLProfile

scala

slick

slick-3.0