我有一个小程序,是用 Java 编写的。最近,我想向其中添加一些Scala代码会很好(因为Scala与Java具有良好的互操作性)。一切工作正常,但是当我尝试使用 ProGuard 优化生成的 jar 时,我有 java.lang.StackOverflowError。我该如何修复它?
错误:
The following error occurred while executing this line:
/var/www/parrot/Parrot/build.xml:84:
java.lang.StackOverflowError
at proguard.classfile.util.SimplifiedVisitor.visitProgramClass(SimplifiedVisitor.java:53)
at proguard.optimize.info.StaticInitializerContainingClassFilter.visitProgramClass(StaticInitializerContainingClassFilter.java:50)
at proguard.classfile.ProgramClass.accept(ProgramClass.java:280)
at proguard.classfile.ProgramClass.hierarchyAccept(ProgramClass.java:293)
at proguard.classfile.ProgramClass.hierarchyAccept(ProgramClass.java:333)
at proguard.classfile.ProgramClass.hierarchyAccept(ProgramClass.java:333)
at proguard.classfile.ProgramClass.hierarchyAccept(ProgramClass.java:333)
... and so on, several thousand times ...
我的 proguard 的 ant 配置:
<proguard
optimizationpasses="${optpass}"
obfuscate="true"
verbose="true"
target="6"
printseeds="true"
allowaccessmodification="true"
overloadaggressively="true"
mergeinterfacesaggressively="true"
repackageclasses="def"
>
<injar file="dist/Parrot.jar" />
<injar path="dist/lib/" /><!-- scala-library.jar is also in this lib directory -->
<libraryjar path="/home/platon/java/jdk1.6.0_24/jre/lib/" />
<outjar file="dist/ParrotOp.jar" filter="!**.SF" />
<keep access="public" name="launch.parrotApp" />
<keepclassmembers extends="java.lang.Enum">
<method access="public static"
type="**[]"
name="values"
parameters="" />
<method access="public static"
type="**"
name="valueOf"
parameters="java.lang.String" />
</keepclassmembers>
<!-- Processing the scala library (as shown in proguard manual) -->
-dontwarn **$$anonfun$*
-dontwarn scala.collection.immutable.RedBlack$Empty
-dontwarn scala.tools.**,plugintemplate.**
-keepclasseswithmembers public class * {
public static void main(java.lang.String[]);
}
-keep class * implements org.xml.sax.EntityResolver
-keepclassmembers class * {
** MODULE$;
}
-keepclassmembernames class scala.concurrent.forkjoin.ForkJoinPool {
long eventCount;
int workerCounts;
int runControl;
scala.concurrent.forkjoin.ForkJoinPool$WaitQueueNode syncStack;
scala.concurrent.forkjoin.ForkJoinPool$WaitQueueNode spareStack;
}
-keepclassmembernames class scala.concurrent.forkjoin.ForkJoinWorkerThread {
int base;
int sp;
int runState;
}
-keepclassmembernames class scala.concurrent.forkjoin.ForkJoinTask {
int status;
}
-keepclassmembernames class scala.concurrent.forkjoin.LinkedTransferQueue {
scala.concurrent.forkjoin.LinkedTransferQueue$PaddedAtomicReference head;
scala.concurrent.forkjoin.LinkedTransferQueue$PaddedAtomicReference tail;
scala.concurrent.forkjoin.LinkedTransferQueue$PaddedAtomicReference cleanMe;
}
</proguard>
顺便说一句 - Scala 代码没有什么特别的,实际上它就像这样简单
package scala1
object Main {
def sum = 14
}
这是从java调用的:
System.err.println(scala1.Main.sum());
最佳答案
存在与此相关的已知问题;请参阅this troubleshooting link 。
但是,该链接正在讨论复杂的代码。您的代码看起来很简单。
关于尝试使用 ProGuard 优化 Java+Scala 时出现 java.lang.StackOverflowError,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6236237/