OutofmemoryError: PermGen on play 2.2.2

Question

我使用激活器(Typesafe activator 1.1.1)创建了一个简单的播放项目(hello- play )。

我的sbt脚本如下所示

SBT_OPTS="-Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M" java $SBT_OPTS -jar `dirname $0`/sbt-launch.jar "$@"

当我运行sbt play时，我的服务器在localhost:9000上正确启动。但是，当我对其中一个scala源文件进行简单更改并再次单击该页面时，会出现以下错误。

注意:我不确定这是否是从命令行运行play应用程序的正确方式，因为它最初是使用activator创建的。

$sbt play
[info] Loading project definition from /Users/ssimanta/hello-play/project
[info] Set current project to hello-play (in build file:/Users/ssimanta/hello-play/)
       _
 _ __ | | __ _ _  _
| '_ \| |/ _' | || |
|  __/|_|\____|\__ /
|_|            |__/

play 2.2.2 built with Scala 2.10.3 (running Java 1.7.0_45), http://www.playframework.com

> Type "help play" or "license" for more information.
> Type "exit" or use Ctrl+D to leave this console.

[hello-play] $ run

--- (Running the application from SBT, auto-reloading is enabled) ---

[info] play - Listening for HTTP on /0:0:0:0:0:0:0:0:9000

(Server started, use Ctrl+D to stop and go back to the console...)

[info] Compiling 1 Scala source to /Users/ssimanta/hello-play/target/scala-2.10/classes...
[info] play - Application started (Dev)
[info] Compiling 1 Scala source to /Users/ssimanta/hello-play/target/scala-2.10/classes...
[error] application - 

! Internal server error, for (GET) [/message] ->

java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: PermGen space
    at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:1.7.0_45]
    at java.util.concurrent.FutureTask.get(FutureTask.java:188) ~[na:1.7.0_45]
    at sbt.ConcurrentRestrictions$$anon$4.take(ConcurrentRestrictions.scala:196) ~[na:na]
    at sbt.Execute.next$1(Execute.scala:88) ~[na:na]
    at sbt.Execute.processAll(Execute.scala:91) ~[na:na]
    at sbt.Execute.runKeep(Execute.scala:69) ~[na:na]
java.lang.OutOfMemoryError: PermGen space
    at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.7.0_45]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800) ~[na:1.7.0_45]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.7.0_45]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) ~[na:1.7.0_45]
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71) ~[na:1.7.0_45]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[na:1.7.0_45]

Answer 1

在我的安装中，MaxPermSize的默认值是512 MB。我认为可能需要这么大的内存，特别是对于一些模板。

尝试将您的SBT_OPTS更改为包含-XX:MaxPermSize=512M。