runnable jar文件不可运行

时间:2014-01-08 23:44:37

标签: java jar export

我试图将我的检查程序从Eclipse导出到可运行的jar文件中。我收到了一个jar文件,但它没有运行...它给了我关于未找到的类的神秘错误消息。它不是包含所有需要的类的jar文件的重点吗?我不知道现在该做什么。

这是我运行jar时得到的结果:

D:\Dokumente\workspace>java -jar Dame.jar
Exception in thread "main" java.lang.NoClassDefFoundError: [[Lcheckers/Board$EmptySquare;
        at checkers.Board.<init>(Board.java:63)
        at checkers.Board.<init>(Board.java:49)
        at checkers.GameUI.main(GameUI.java:105)
Caused by: java.lang.ClassNotFoundException: checkers.Board$EmptySquare
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 3 more

也许知道EmptySquareBoard的内部类有帮助吗? 可能是什么问题呢?我试过两个&#34;提取所需的库&#34;和#34;打包所需的库&#34;在导出向导中。


我也尝试过使用命令行中的jar,但它也不起作用。这就是我的所作所为:

D:\Dokumente\workspace\Dame\bin\checkers>jar cvfe Dame.jar checkers.GameUI *.class
D:\Dokumente\workspace\Dame\bin\checkers>java -jar Dame.jar
Fehler: Hauptklasse checkers.GameUI.class konnte nicht gefunden oder geladen werden
(error: main class checkers.GameUI.class could not be found or loaded)

如果我遗漏主要类的包名(GameUI),它也不起作用:

D:\Dokumente\workspace\Dame\bin\checkers>jar cvfe Dame.jar GameUI *.class
D:\Dokumente\workspace\Dame\bin\checkers>java -jar Dame.jar
Exception in thread "main" java.lang.NoClassDefFoundError: GameUI (wrong name: checkers/GameUI)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.access$100(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

毫无头绪。

jar文件内容为:

D:\Dokumente\workspace\Dame\bin\checkers>jar tvf Dame.jar
     0 Thu Jan 09 01:05:26 CET 2014 META-INF/
    88 Thu Jan 09 01:05:26 CET 2014 META-INF/MANIFEST.MF
   994 Thu Jan 09 00:14:30 CET 2014 Board$1.class
  1840 Thu Jan 09 00:14:30 CET 2014 Board$EmptySquare.class
   447 Thu Jan 09 00:14:30 CET 2014 Board$GamePiece.class
  4051 Thu Jan 09 00:14:30 CET 2014 Board$Piece.class
  4399 Thu Jan 09 00:14:30 CET 2014 Board$Queen.class
  8381 Thu Jan 09 00:14:30 CET 2014 Board.class
  2946 Thu Jan 09 00:14:30 CET 2014 Checkers.class
  2708 Thu Jan 09 00:14:30 CET 2014 CheckersAB.class
  4202 Thu Jan 09 00:14:30 CET 2014 CheckersABT.class
  2464 Thu Jan 09 00:14:30 CET 2014 CheckersMinMax.class
  1324 Thu Jan 09 00:14:30 CET 2014 CheckersPieces.class
   951 Thu Jan 09 00:14:30 CET 2014 GameState.class
   804 Thu Jan 09 00:14:30 CET 2014 GameUI$1.class
   663 Thu Jan 09 00:14:30 CET 2014 GameUI$2.class
  2535 Thu Jan 09 00:14:30 CET 2014 GameUI.class
   739 Thu Jan 09 00:14:30 CET 2014 GUIBoard$1.class
  6069 Thu Jan 09 00:14:30 CET 2014 GUIBoard.class
  3776 Thu Jan 09 00:14:30 CET 2014 Move.class
   607 Thu Jan 09 00:14:30 CET 2014 MoveComparator.class
   610 Thu Jan 09 00:14:30 CET 2014 NodeVal.class
  1078 Thu Jan 09 00:14:30 CET 2014 PlayCheckersAB.class
   356 Thu Jan 09 00:14:30 CET 2014 PlayCheckersABT.class
   357 Thu Jan 09 00:14:30 CET 2014 PlayCheckersMM.class
  2466 Thu Jan 09 00:14:30 CET 2014 PlayTournament.class
  1183 Thu Jan 09 00:14:30 CET 2014 Square.class
   241 Thu Jan 09 00:14:30 CET 2014 ZeroSumGame.class

1 个答案:

答案 0 :(得分:0)

好的,我找到了答案。在帖子eclipse doesn't compile the project中 有人建议切换到新工作区。我这样做是因为除了神秘的非工作jar文件之外,Eclipse也不再构建我的java文件了。我切换到一个新工作区,重新导入项目,瞧,导出的jar文件是可以运行的!

感谢您的努力,特别是对于divanov!