New Maven安装：mvn -version java.lang.ClassNotFoundException [英] New Maven install: mvn -version java.lang.ClassNotFoundException

问题描述

所以我已经安装了maven，其中包含以下详细信息：

So I've installed maven with the following details:

安装路径：

C:\Program Files\Apache Software Foundation\apache-maven-3.0.3

Env vars：

JAVA_HOME C:\Progra~1\Java\jdk1.6.0_25
M2_HOME C:\Program Files\Apache Software Foundation\apache-maven-3.0.3

用户代表：

M2 %M2_HOME%\bin
PATH %JAVA_HOME%\bin;%M2%;

现在，从命令行

C:\>javac -version
javac 1.6.0_25

C:\>mvn -version
Exception in thread "main" java.lang.NoClassDefFoundError: org/codehaus/plexus/c
lassworlds/launcher/Launcher

Caused by: java.lang.ClassNotFoundException: org.codehaus.plexus.classworlds.lau
ncher.Launcher
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClss(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.codehaus.plexus.classworlds.launcher.Launcher
.  Program will exit.

到目前为止，由于Eclipse，我已经完全脱离了Java的命令行构建细节，但它看起来它在/ boot目录中找到plexus-classworlds-2.4.jar时遇到了问题。我是否需要一些额外的路径信息？

I've been insulated from the command line build details for Java thus far thanks to Eclipse, but it looks like it's having problems with finding the plexus-classworlds-2.4.jar in the /boot dir. Should I need some additional path info?

谢谢！

推荐答案

我在PATH的其他部分使用mvn.bat作为maven2有类似之处。因此，请仔细检查PATH变量的所有目录。

I had similar by having mvn.bat for maven2 in other part of PATH. So check carefully all directories of your PATH variable.

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