我正在尝试通过播放框架应用程序在heroku上设置postgres数据库，但我一直收到有关我的DATABASE_URL的错误。
堆栈追踪： -
-----> Heroku receiving push
-----> Play 2.0 - Java app detected
-----> Running: sbt clean compile stage
Getting net.java.dev.jna jna 3.2.3 ...
:: retrieving :: org.scala-sbt#boot-jna
confs: [default]
1 artifacts copied, 0 already retrieved (838kB/25ms)
Getting org.scala-tools.sbt sbt_2.9.1 0.11.2 ...
:: retrieving :: org.scala-sbt#boot-app
confs: [default]
37 artifacts copied, 0 already retrieved (7324kB/78ms)
Getting Scala 2.9.1 (for sbt)...
:: retrieving :: org.scala-sbt#boot-scala
confs: [default]
4 artifacts copied, 0 already retrieved (19939kB/188ms)
[info] Loading global plugins from /tmp/build_hdhsg4dgyxy/.sbt_home/.sbt/plugins
[info] Updating {file:/tmp/build_hdhsg4dgyxy/.sbt_home/.sbt/plugins/}default-05c586...
[info] Resolving org.scala-tools.sbt#sbt_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#main_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#actions_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#classfile_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#io_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#control_2.9.1;0.11.2 ...
[info] Resolving org.scala-lang#scala-library;2.9.1 ...
[info] Resolving org.scala-tools.sbt#interface;0.11.2 ...
[info] Resolving org.scala-tools.sbt#logging_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#process_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#classpath_2.9.1;0.11.2 ...
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[info] Resolving org.scala-lang#scala-compiler;2.9.1 ...
[info] Resolving org.scala-tools.sbt#incremental-compiler_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#collections_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#api_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#persist_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbinary#sbinary_2.9.0;0.4.0 ...
[info] Resolving org.scala-tools.sbt#compile_2.9.1;0.11.2 ...
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[info] Resolving org.apache.ivy#ivy;2.2.0 ...
[info] Resolving com.jcraft#jsch;0.1.31 ...
[info] Resolving commons-httpclient#commons-httpclient;3.1 ...
[info] Resolving commons-logging#commons-logging;1.0.4 ...
[info] Resolving commons-codec#commons-codec;1.2 ...
[info] Resolving org.scala-tools.sbt#completion_2.9.1;0.11.2 ...
[info] Resolving jline#jline;0.9.94 ...
[info] Resolving org.scala-tools.sbt#run_2.9.1;0.11.2 ...
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[info] Resolving org.scala-tools.sbt#tasks_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#tracking_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#cache_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.sbt#testing_2.9.1;0.11.2 ...
[info] Resolving org.scala-tools.testing#test-interface;0.5 ...
[info] Resolving org.scala-tools.sbt#compiler-interface;0.11.2 ...
[info] Resolving org.scala-tools.sbt#precompiled-2_8_1;0.11.2 ...
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[info] Resolving org.scala-tools.sbt#precompiled-2_9_0;0.11.2 ...
[info] Done updating.
[info] Compiling 1 Scala source to /tmp/build_hdhsg4dgyxy/.sbt_home/.sbt/plugins/target/scala-2.9.1/sbt-0.11.2/classes...
[info] Loading project definition from /tmp/build_hdhsg4dgyxy/project
[info] Set current project to PostDemo (in build file:/tmp/build_hdhsg4dgyxy/)
[success] Total time: 0 s, completed Jun 28, 2012 2:20:47 AM
[info] Updating {file:/tmp/build_hdhsg4dgyxy/}PostDemo...
[info] downloading http://repo.typesafe.com/typesafe/releases/postgresql/postgresql/9.1-901.jdbc4/postgresql-9.1-901.jdbc4.jar ...
[info] [SUCCESSFUL ] postgresql#postgresql;9.1-901.jdbc4!postgresql.jar (117ms)
[info] Done updating.
[info] Compiling 4 Scala sources and 4 Java sources to /tmp/build_hdhsg4dgyxy/target/scala-2.9.1/classes...
[error] {file:/tmp/build_hdhsg4dgyxy/}PostDemo/compile:compile: com.typesafe.config.ConfigException$UnresolvedSubstitution: conf/application.conf: 37: Could not resolve substitution to a value: ${DATABASE_URL}
[error] Total time: 10 s, completed Jun 28, 2012 2:20:57 AM
! Failed to build app with sbt
! Heroku push rejected, failed to compile Play 2.0 - java app
error: failed to push some refs to 'git@heroku.com.git'
我使用以下命令将DATABASE_URL设置为环境变量： -
echo "export DATABASE_URL=postgres://postgres:1234@localhost/Play">>.bash_profile
. .bash_profile
我也尝试设置另一个URL，我发现使用命令heroku config，我知道这是一个很长的postgres URL，但它不能正常工作，每次都会产生同样的异常。
以下是我在application.conf文件中添加的内容
%prod.db=${DATABASE_URL}
依赖
val appDependencies = Seq(
"postgresql" % "postgresql" % "9.1-901.jdbc4"
)
所以现在我对我的DATABASE_URL感到困惑。为什么heroku无法用合适的值替换它。 heroku在哪里寻找合适的URL？在我的application.conf文件中或在我的系统的bash配置文件中设置的环境变量中？
任何帮助都会非常感激。
由于
修改
日志
2012-06-28 20:38:18,500 - [INFO] - from play in main
Listening for HTTP on port 9000...
2012-06-28 20:38:25,862 - [INFO] - from play in play-akka.actor.default-dispatcher-1
database [default] connected at jdbc:postgresql://localhost/Play
2012-06-28 20:38:27,470 - [ERROR] - from application in New I/O server worker #1-1
! @6aoffk4jk - Internal server error, for request [GET /login/?username=abc&&password=abc] ->
play.api.db.evolutions.InvalidDatabaseRevision: Database 'default' needs evolution! [An SQL script need to be run on your database.]
at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart$1.apply(Evolutions.scala:424) ~[play_2.9.1.jar:2.0.1]
at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart$1.apply(Evolutions.scala:410) ~[play_2.9.1.jar:2.0.1]
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) ~[scala-library.jar:0.11.2]
at scala.collection.immutable.List.foreach(List.scala:45) ~[scala-library.jar:0.11.2]
at play.api.db.evolutions.EvolutionsPlugin.onStart(Evolutions.scala:410) ~[play_2.9.1.jar:2.0.1]
at play.api.Play$$anonfun$start$1.apply(Play.scala:60) ~[play_2.9.1.jar:2.0.1]
at play.api.Play$$anonfun$start$1.apply(Play.scala:60) ~[play_2.9.1.jar:2.0.1]
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) ~[scala-library.jar:0.11.2]
at scala.collection.immutable.List.foreach(List.scala:45) ~[scala-library.jar:0.11.2]
at play.api.Play$.start(Play.scala:60) ~[play_2.9.1.jar:2.0.1]
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$3$$anonfun$1.apply(ApplicationProvider.scala:125) ~[play_2.9.1.jar:2.0.1]
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$3$$anonfun$1.apply(ApplicationProvider.scala:112) ~[play_2.9.1.jar:2.0.1]
at scala.Option.map(Option.scala:133) ~[scala-library.jar:0.11.2]
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$3.apply(ApplicationProvider.scala:112) ~[play_2.9.1.jar:2.0.1]
at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$apply$3.apply(ApplicationProvider.scala:110) ~[play_2.9.1.jar:2.0.1]
at scala.Either$RightProjection.flatMap(Either.scala:277) ~[scala-library.jar:0.11.2]
at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:110) ~[play_2.9.1.jar:2.0.1]
at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:110) ~[play_2.9.1.jar:2.0.1]
at akka.dispatch.Future$$anon$3.liftedTree1$1(Future.scala:195) ~[akka-actor.jar:2.0.1]
at akka.dispatch.Future$$anon$3.run(Future.scala:194) ~[akka-actor.jar:2.0.1]
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:83) ~[akka-actor.jar:2.0.1]
at akka.jsr166y.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1381) ~[akka-actor.jar:2.0.1]
at akka.jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:259) ~[akka-actor.jar:2.0.1]
at akka.jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974) ~[akka-actor.jar:2.0.1]
at akka.jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1478) ~[akka-actor.jar:2.0.1]
at akka.jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104) ~[akka-actor.jar:2.0.1]
2012-06-28 20:38:30,150 - [WARN] - from play in New I/O server worker #1-1
Applying evolution script for database 'default':
# !!! WARNING! This script contains DOWNS evolutions that are likely destructives
# --- Rev:2,Downs - eddafc8
delete from admins;
delete from employees;
# --- Rev:2,Ups - 822c4da
insert into admins (username, password) values ('abc', 'abc');
insert into admins (username, password) values ('abc', 'abc');
insert into employees (id,name,email) values (1, 'Super Man', 'superman@superhero.com');
insert into employees (id,name,email) values (2, 'Bat man', 'batman@superhero.com');
insert into employees (id,name,email) values (3, 'Spider Man', 'spidy@superhero.com');
insert into employees (id,name,email) values (4, 'Iron Man', 'ironman@superhero.com');
2012-06-28 20:38:30,741 - [INFO] - from play in play-akka.actor.default-dispatcher-1
database [default] connected at jdbc:postgresql://localhost/Play
2012-06-28 20:38:31,519 - [INFO] - from play in play-akka.actor.default-dispatcher-1
Application started (Dev)
答案 0 :(得分：18)
似乎你正在混合一些Play 1和Play 2约定。您似乎正在使用Play 2.在Play 2中，最简单的设置方法是在DATABASE_URL中不使用application.conf，而只是覆盖Procfile中的数据库配置：< / p>
web: target/start -Dhttp.port=$PORT -DapplyEvolutions.default=true -Ddb.default.driver=org.postgresql.Driver -Ddb.default.url=$DATABASE_URL
有关更详细的演练，请参阅我的Play 2 Tutorial。
答案 1 :(得分：1)
使用play 2.4，Slick 3.0.3＆amp; Heroku中的postgres它适用于我运行我的sql evolution脚本的以下设置：
build.sbt中的：
name := """app-name"""
并在libraryDependencies ++ = Seq（
）中添加以下内容"com.typesafe.play" %% "play-slick" % "1.0.1",
"com.typesafe.play" %% "play-slick-evolutions" % "1.0.1",
"com.typesafe.slick" %% "slick" % "3.0.3",
"org.postgresql" % "postgresql" % "9.4-1201-jdbc41",
"org.slf4j" % "slf4j-nop" % "1.6.4",
在application.conf中：
slick.dbs.default.driver ="slick.driver.PostgresDriver$"
slick.dbs.default.db.dataSourceClass = "slick.jdbc.DatabaseUrlDataSource"
slick.dbs.default.db.properties.driver = "org.postgresql.Driver"
并在Procfile中：
web: target/universal/stage/bin/app-name -Dhttp.port=${PORT} -Dplay.evolutions.db.default.autoApply=true
干杯