使用 java -jar 运行 Scala 应用程序 [英] running scala apps with java -jar
问题描述
我在 Java 方面遇到了一些问题.看看吧.
I got some problems with the java. Check it out.
sebastian@sebastian-desktop:~/scaaaaaaaaala$ java -cp/home/sebastian/.m2/repository/org/scala-lang/scala-library/2.8.0.RC3/scala-library-2.8.0.RC3.jar:target/scaaaaaaaaala-1.0.jar scaaalaaa.App
Hello World!
这很酷,对,但是如何:
That's cool, right, but how bout this:
sebastian@sebastian-desktop:~/scaaaaaaaaala$ java -cp/home/sebastian/.m2/repository/org/scala-lang/scala-library/2.8.0.RC3/scala-library-2.8.0.RC3.jar -jar 目标/scaaaaaaaaala-1.0.jar
Exception in thread "main" java.lang.NoClassDefFoundError: scala/Application
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at scaaalaaa.App.main(App.scala)
Caused by: java.lang.ClassNotFoundException: scala.Application
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 13 more
怎么了?知道为什么第一个有效而不是第二个吗?我如何 -jar 我的 Scala??
Wat the heck? Any idea why the first works and not the 2nd? How do I -jar my scala??
我先谢谢你,兄弟.
推荐答案
如果定义了 -jar,则 -classpath 将被忽略:
If you define -jar the -classpath is ignored:
-jar 当你使用这个选项时,JAR 文件是所有用户的来源类和其他用户类路径设置被忽略.
-jar When you use this option, the JAR file is the source of all user classes, and other user class path settings are ignored.
您可以在清单元数据.
启动应用的最简单方法是使用 scala 脚本:
The easiest way to start your app is using the scala scripts:
scala -classpath target/scaaaaaaaaala-1.0.jar scaaalaaa.App Hello World!
这篇关于使用 java -jar 运行 Scala 应用程序的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!