使用Play和Slick连接到MSSQL(jtds)

Question

我有一个项目已经完成了大约一个月,我使用Play 2.1.1,光滑和MySQL.现在我需要将其转移到MSSQL,我遇到了一些问题.

我的应用程序编译得很好,并找到驱动程序,但每当我尝试建立连接时,我[RuntimeException: java.lang.ExceptionInInitializerError]在网站上得到一个,我的控制台中的更详细的错误是:

play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.ExceptionInInitializerError]]
    at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1.1]
    at play.api.DefaultApplication.handleError(Application.scala:383) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:326) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:324) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]java.lang.RuntimeException: java.lang.ExceptionInInitializerError
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:222) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:18) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:108) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:106) ~[play_2.10.jar:2.1.1]Caused by: java.lang.ExceptionInInitializerError: null
    at controllers.Application$$anonfun$addLicense$1.apply(Application.scala:18) ~[na:na]
    at controllers.Application$$anonfun$addLicense$1.apply(Application.scala:17) ~[na:na]
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:217) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:18) ~[play_2.10.jar:2.1.1]
Caused by: play.api.Configuration$$anon$1: Configuration error[Slick error : Unknown jdbc driver found in application.conf: [net.sourceforge.jtds.jdbc.Driver]]
    at play.api.Configuration$.play$api$Configuration$$configError(Configuration.scala:80) ~[play_2.10.jar:2.1.1]
    at play.api.Configuration.reportError(Configuration.scala:558) ~[play_2.10.jar:2.1.1]
    at play.api.db.slick.Config$.driver(Config.scala:21) ~[play-slick_2.10-0.3.3.jar:0.3.3]
    at play.api.db.slick.Config$.driver$lzycompute(Config.scala:7) ~[play-slick_2.10-0.3.3.jar:0.3.3]
    at play.api.db.slick.Config$.driver(Config.scala:7) ~[play-slick_2.10-0.3.3.jar:0.3.3]
    at models.License$.<init>(License.scala:38) ~[na:na]

我发现最有趣的是这条线:

Caused by: play.api.Configuration$$anon$1: Configuration error[Slick error : Unknown jdbc driver found in application.conf: [net.sourceforge.jtds.jdbc.Driver]]

它找到了驱动程序,因为如果我输入了错误的名称,它会给我一个错误;输入它后就不会.我的lib目录中有jtds驱动程序.

我也在启动时连接到db

[info] play - database [default] connected at jdbc:jtds:sqlserver://ServerAddress/EGLC

一些额外的信息:

application.conf:

db.default.url="jdbc:jtds:sqlserver://ServerAddress/EGLC"
db.default.driver=net.sourceforge.jtds.jdbc.Driver
db.default.user="sa"
db.default.password="pass"
slick.default="models.*"

Build.scala:

val appDependencies = Seq(
// Add your project dependencies here,
jdbc,
"mysql" % "mysql-connector-java" % "5.1.25",
"net.sourceforge.jtds" % "jtds" % "1.3.1",
"com.typesafe.play" %% "play-slick" % "0.3.3"
)

编辑当我刷新页面虽然我得到一个不同的例外,一组新的错误甚至没有提到jtds

play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class models.Location$]]
    at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1.1]
    at play.api.DefaultApplication.handleError(Application.scala:383) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:326) ~[play_2.10.jar:2.1.1]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$17$$anonfun$apply$24.apply(PlayDefaultUpstreamHandler.scala:324) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]
    at play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113) ~[play_2.10.jar:2.1.1]java.lang.RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class models.Location$
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:222) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:18) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:108) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5.apply(Action.scala:106) ~[play_2.10.jar:2.1.1]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class models.Location$
    at controllers.Application$$anonfun$locations$1$$anonfun$apply$12$$anonfun$apply$13.apply(Application.scala:47) ~[na:na]
    at controllers.Application$$anonfun$locations$1$$anonfun$apply$12$$anonfun$apply$13.apply(Application.scala:46) ~[na:na]
    at controllers.Secured$$anonfun$IsAuthenticated$3$$anonfun$apply$3.apply(Auth.scala:38) ~[na:na]
    at controllers.Secured$$anonfun$IsAuthenticated$3$$anonfun$apply$3.apply(Auth.scala:38) ~[na:na]
    at play.api.mvc.ActionBuilder$$anon$1.apply(Action.scala:217) ~[play_2.10.jar:2.1.1]
    at play.api.mvc.Action$$anonfun$apply$1$$anonfun$apply$2$$anonfun$apply$5$$anonfun$apply$6.apply(Action.scala:109) ~[play_2.10.jar:2.1.1]

Answer 1

play- slick不知道jTDS驱动程序.虽然Slick通常支持SQL服务器,但是play-slick 建立了从驱动程序类名到Slick驱动程序的连接:

private def driverByName : String => Option[ExtendedDriver] = Map(
   "org.apache.derby.jdbc.EmbeddedDriver" -> DerbyDriver
   ,"org.h2.Driver" -> H2Driver
   ,"org.hsqldb.jdbcDriver" -> HsqldbDriver
   ,"com.mysql.jdbc.Driver" -> MySQLDriver
   ,"org.postgresql.Driver" -> PostgresDriver
   ,"org.sqlite.JDBC" -> SQLiteDriver
   ,"com.microsoft.sqlserver.jdbc.SQLServerDriver" -> SQLServerDriver
).get(_)

如您所见,支持Microsoft的驱动程序,而jTDS则不支持.您现在可以使用Microsoft的JDBC驱动程序或修改play-slick.变化很简单.只需添加该行

,"net.sourceforge.jtds.jdbc.Driver" -> SQLServerDriver

它应该工作.

我已经看到你在项目的GitHub页面上提出的问题.我发送了一个应该解决此问题的pull请求.也许它会融入到play-slick的下一个版本中.