使用java -jar运行scala应用程序 [英] running scala apps with java -jar

问题描述

我遇到了一些java问题。检查出来。

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 / scaaaaaaaaaa-1.0.jar scaaalaaa.App

Hello World!

这很酷，对，但是如何回合：

That's cool, right, but how bout this:

sebastian @ sebastian-desktop：〜/ scaaaaaaaaa $ java -cp /home/sebastian/.m2/repository/org/scala-lang/scala-library/2.8.0.RC3/scala -library-2.8.0.RC3.jar -jar target / scaaaaaaaaaala-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

看哪？知道为什么第一个有效而不是第二个？我怎么 - 我的scala ??

Wat the heck? Any idea why the first works and not the 2nd? How do I -jar my scala??

我提前感谢，兄弟。

推荐答案

如果定义-jar，则忽略-classpath：

If you define -jar the -classpath is ignored:

Java手册：

-jar当您使用此选项时，JAR文件是所有用户
类的源，并忽略其他用户类路径
设置。

-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。

启动应用程序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！