我有一个scala项目,我已经使用sbt包构建并运行到目前为止。现在我需要将它们移植到另一台机器上。因此,我可以看到,JAR文件java.lang.NoClassDefFoundError:从Scala运行JAR时
$PROJECT_HOME/target/scala-2.9.3/My-app_2.9.3-1.0.jar
下创建但是,当我尝试使用运行它们,
java -jar target/scala-2.9.3/My-app_2.9.3-1.0.jar
错误信息是这样的,
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/spark/SparkContext
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)
at java.lang.Class.getMethod0(Class.java:2694)
at java.lang.Class.getMethod(Class.java:1622)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException: org.apache.spark.SparkContext
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
我得到java.lang.NoClassDefFoundError:org/apache/spark/SparkContext异常。我知道如果JAR找不到/加载类的定义,通常会发生NoClassDefFoundError。但在我的sbt我已包括类,
name := "My App"
version := "1.0"
scalaVersion := "2.9.3"
libraryDependencies += "org.apache.spark" %% "spark-core" % "0.8.0-incubating"
任何错误的原因指针将不胜感激?谢谢!
http://javareferencegv.blogspot.com/2013/10/debugging-javalangnoclassdeffounderror.html –