Postgresql Play/Slick:SQLTimeoutException：等待连接1001ms后超时

我已经用PostgreSQL 9.4数据库创建了一个空的（激活器模板play scala）play 2.4.3应用程序，并尝试使用Slick 3.1.0，但它抛出了一个错误：

play.api.UnexpectedException: Unexpected exception[SQLTimeoutException: Timeout after 1000ms of waiting for a connection.]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:165) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:121) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at scala.Option.map(Option.scala:146) ~[scala-library-2.11.7.jar:na]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:121) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:119) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at scala.util.Success.flatMap(Try.scala:231) ~[scala-library-2.11.7.jar:na]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:119) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:111) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) ~[scala-library-2.11.7.jar:na]
    at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) ~[scala-library-2.11.7.jar:na]
    at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40) ~[akka-actor_2.11-2.3.13.jar:na]
    at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397) ~[akka-actor_2.11-2.3.13.jar:na]
    at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) ~[scala-library-2.11.7.jar:na]
    at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) ~[scala-library-2.11.7.jar:na]
    at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) ~[scala-library-2.11.7.jar:na]
    at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) ~[scala-library-2.11.7.jar:na]
Caused by: java.sql.SQLTimeoutException: Timeout after 1000ms of waiting for a connection.
    at com.zaxxer.hikari.pool.BaseHikariPool.getConnection(BaseHikariPool.java:227) ~[HikariCP-java6-2.3.7.jar:na]
    at com.zaxxer.hikari.pool.BaseHikariPool.getConnection(BaseHikariPool.java:182) ~[HikariCP-java6-2.3.7.jar:na]
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:93) ~[HikariCP-java6-2.3.7.jar:na]
    at slick.jdbc.hikaricp.HikariCPJdbcDataSource.createConnection(HikariCPJdbcDataSource.scala:12) ~[slick-hikaricp_2.11-3.1.0.jar:na]
    at play.api.db.slick.evolutions.internal.DBApiAdapter$DatabaseAdapter.getConnection(DBApiAdapter.scala:57) ~[play-slick-evolutions_2.11-1.1.1.jar:1.1.1]
    at play.api.db.slick.evolutions.internal.DBApiAdapter$DatabaseAdapter.getConnection(DBApiAdapter.scala:60) ~[play-slick-evolutions_2.11-1.1.1.jar:1.1.1]
    at play.api.db.evolutions.DatabaseEvolutions.databaseEvolutions(EvolutionsApi.scala:119) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.DatabaseEvolutions.scripts(EvolutionsApi.scala:97) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.DatabaseEvolutions.scripts(EvolutionsApi.scala:112) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.DefaultEvolutionsApi.scripts(EvolutionsApi.scala:77) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutions$$anonfun$play$api$db$evolutions$ApplicationEvolutions$$runEvolutions$1.apply$mcV$sp(ApplicationEvolutions.scala:50) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutions.withLock(ApplicationEvolutions.scala:98) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutions.play$api$db$evolutions$ApplicationEvolutions$$runEvolutions(ApplicationEvolutions.scala:49) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutions$$anonfun$start$1.apply(ApplicationEvolutions.scala:42) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutions$$anonfun$start$1.apply(ApplicationEvolutions.scala:42) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at scala.collection.immutable.Stream.foreach(Stream.scala:594) ~[scala-library-2.11.7.jar:na]
    at play.api.db.evolutions.ApplicationEvolutions.start(ApplicationEvolutions.scala:42) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutions.<init>(ApplicationEvolutions.scala:149) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutionsProvider.get$lzycompute(EvolutionsModule.scala:53) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutionsProvider.get(EvolutionsModule.scala:53) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at play.api.db.evolutions.ApplicationEvolutionsProvider.get(EvolutionsModule.scala:44) ~[play-jdbc-evolutions_2.11-2.4.0.jar:2.4.0]
    at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:81) ~[guice-4.0.jar:na]
    at com.google.inject.internal.BoundProviderFactory.provision(BoundProviderFactory.java:72) ~[guice-4.0.jar:na]
    at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:61) ~[guice-4.0.jar:na]
    at com.google.inject.internal.BoundProviderFactory.get(BoundProviderFactory.java:62) ~[guice-4.0.jar:na]
    at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1103) ~[guice-4.0.jar:na]
    at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40) ~[guice-4.0.jar:na]
    at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:145) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180) ~[guice-4.0.jar:na]
    at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110) ~[guice-4.0.jar:na]
    at com.google.inject.Guice.createInjector(Guice.java:96) ~[guice-4.0.jar:na]
    at com.google.inject.Guice.createInjector(Guice.java:73) ~[guice-4.0.jar:na]
    at com.google.inject.Guice.createInjector(Guice.java:62) ~[guice-4.0.jar:na]
    at play.api.inject.guice.GuiceBuilder.injector(GuiceInjectorBuilder.scala:126) ~[play_2.11-2.4.3.jar:2.4.3]
    at play.api.inject.guice.GuiceApplicationBuilder.build(GuiceApplicationBuilder.scala:93) ~[play_2.11-2.4.3.jar:2.4.3]
    at play.api.inject.guice.GuiceApplicationLoader.load(GuiceApplicationLoader.scala:21) ~[play_2.11-2.4.3.jar:2.4.3]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1$$anonfun$2.apply(DevServerStart.scala:153) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1$$anonfun$2.apply(DevServerStart.scala:150) ~[play-server_2.11-2.4.3.jar:2.4.3]
    at play.utils.Threads$.withContextClassLoader(Threads.scala:21) ~[play_2.11-2.4.3.jar:2.4.3]
    at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:150) ~[play-server_2.11-2.4.3.jar:2.4.3]
    ... 15 common frames omitted
Caused by: java.lang.NullPointerException: null
    at slick.jdbc.DriverDataSource.getConnection(DriverDataSource.scala:98) ~[slick_2.11-3.1.0.jar:na]
    at com.zaxxer.hikari.pool.BaseHikariPool.addConnection(BaseHikariPool.java:438) ~[HikariCP-java6-2.3.7.jar:na]
    at com.zaxxer.hikari.pool.BaseHikariPool$1.run(BaseHikariPool.java:413) ~[HikariCP-java6-2.3.7.jar:na]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_66]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_66]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_66]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_66]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_66]

和application.conf：

play.evolutions.db.default.enabled = true

slick.dbs.default.driver = "slick.driver.PostgresDriver$"
slick.dbs.default.db.driver = "org.postgresql.Driver"
slick.dbs.default.db.dataSourceClass = "slick.jdbc.DatabaseUrlDataSource"
slick.dbs.default.db.properties.driver = "org.postgresql.Driver"
slick.dbs.default.db.url = "jdbc:postgresql://localhost:5432/mydb"
slick.dbs.default.user = "postgres"
slick.dbs.default.password = "postgres"

根据文档（），一切都应该很好，那么这里有什么问题呢

更新：我注意到一件重要的事情——我有一个单一的数据库演变，一旦我删除它，错误就消失了。我确实需要进化，所以问题仍然存在

更新2:所以我在github上发现了一些相关问题，但没有解决：

---

问题出在配置中，这是一个工作示例：

slick.dbs.default.driver = "slick.driver.PostgresDriver$"
slick.dbs.default.db.driver = "org.postgresql.Driver"
slick.dbs.default.db.url = "jdbc:postgresql://localhost:5432/mydb"
slick.dbs.default.db.user = "postgres"
slick.dbs.default.db.password = "postgres"

---

请注意，如果您输入了不正确的登录详细信息，它仍将作为超时返回，而不是身份验证错误或类似错误。

我在Play 2.5.9和Slick 3.11中遇到了这个问题。我通过添加slick.dbs.default.db.properties.url解决了这个问题：

slick.dbs.default.db.url="jdbc:postgresql://<hostname>:<port>/<db>"
slick.dbs.default.db.properties.url="jdbc:postgresql://<hostname>:<port>/<db>"

slick.dbs.default.db.url=“jdbc:postgresql://:”
slick.dbs.default.db.properties.url=“jdbc:postgresql://:”

当我们在AWS连接到Postgres RDS实例的ECS中运行Play应用程序时，我们遇到了相同的问题（与Play、Slick和Postgres版本完全相同）。当我们在本地运行应用程序（连接到同一RDS实例）时，一切正常！有什么想法吗？如果我们禁用evolutions，它可以在本地和AWS上正常工作。

slick.dbs.default.db.url="jdbc:postgresql://<hostname>:<port>/<db>"
slick.dbs.default.db.properties.url="jdbc:postgresql://<hostname>:<port>/<db>"