用Java 7在Scala中编写JNI时出现javah错误(Error with javah when writing JNI in Scala with Java 7)

 在Java 6中，我能够在Scala中使用JNI。 我会有这样的代码： 
 
package mypackage
object MyClass {
    System.loadLibrary("myclass-native")
    @native def foo(): Int = sys.error("")
}
 
 然后我运行： 
 
javah -classpath target/scala-2.9.1/classes -d target/jni mypackage.MyClass$
 
 我会得到我的头文件很好。 
 
 在Java 7中，我收到以下错误： 
 
Exception in thread "main" java.lang.IllegalArgumentException: Not a valid class name: mypackage.MyClass.
at com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:177)
at com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:68)
at com.sun.tools.javah.JavahTask.run(JavahTask.java:509)
at com.sun.tools.javah.JavahTask.run(JavahTask.java:335)
at com.sun.tools.javah.Main.main(Main.java:46)
 
 这就像javah不再接受类名称中的美元符号，但我需要使用Scala中的美元符号来获得静态方法的等价物。 
 
 供java 6参考： 
 
$ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02, mixed mode)
$ javah -version
javah version "1.6.0_29"
 
 用java 7： 
 
$ java -version
java version "1.7.0_03"
OpenJDK Runtime Environment (IcedTea7 2.1.1pre) (7~u3-2.1.1~pre1-1ubuntu2)
OpenJDK 64-Bit Server VM (build 22.0-b10, mixed mode)
$ javah -version
javah version "1.7.0_03"
 
 有没有人有任何运气在java 7中使用java的JNI和Scala？ 
 
 编辑 
 
 作为bug发布在http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7185778 

In java 6, I was able to use JNI in Scala just fine. I would have code like:
 
package mypackage
object MyClass {
    System.loadLibrary("myclass-native")
    @native def foo(): Int = sys.error("")
}
 
And then I'd run:
 
javah -classpath target/scala-2.9.1/classes -d target/jni mypackage.MyClass$
 
And I'd get my header files just fine.
 
In java 7, I get the following error:
 
Exception in thread "main" java.lang.IllegalArgumentException: Not a valid class name: mypackage.MyClass.
at com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:177)
at com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:68)
at com.sun.tools.javah.JavahTask.run(JavahTask.java:509)
at com.sun.tools.javah.JavahTask.run(JavahTask.java:335)
at com.sun.tools.javah.Main.main(Main.java:46)
 
It's like javah no longer accepts dollar signs in class names, but I need to use the dollar sign in Scala to get the equivalent of a static method.
 
For reference with java 6:
 
$ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02, mixed mode)
$ javah -version
javah version "1.6.0_29"
 
With java 7:
 
$ java -version
java version "1.7.0_03"
OpenJDK Runtime Environment (IcedTea7 2.1.1pre) (7~u3-2.1.1~pre1-1ubuntu2)
OpenJDK 64-Bit Server VM (build 22.0-b10, mixed mode)
$ javah -version
javah version "1.7.0_03"
 
Has anyone had any luck using javah for JNI with Scala in java 7?
 
Edit
 
Posted as a bug at http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7185778

原文：https://stackoverflow.com/questions/10669704