如何在Linux中设置CLASSPATH让java查找jar文件？ [英] How to set CLASSPATH in Linux to let java find jar file?

问题描述

在Linux下我试图运行一个jar文件，如下所示：

Under Linux I am trying to run a jar file as follows:

java -jar plantuml.jar -testdot

将 CLASSPATH 设置为以下任何一项（该文件位于 /home/user/plantuml.jar ）：

while having CLASSPATH set to any of the following (the file is located at /home/user/plantuml.jar):

export CLASSPATH=/home/user
export CLASSPATH=/home/user/
export CLASSPATH=/home/user/plantuml.jar

在任何一种情况下，无论我如何定义 CLASSPATH ， java 命令给出错误无法访问jarfile plantuml.jar 。我在这里做错了什么？

In either case, no matter how I define CLASSPATH, the java command gives an error Unable to access jarfile plantuml.jar. What am I doing wrong here?

推荐答案

你必须在参数 -jar之后提供完整的路径。因此，对于您的示例，您必须致电

You have to supply the complete path after the parameter -jar. So for your example you have to call

java -jar /home/user/plantuml.jar -testdot

仅评估 $ CLASSPATH 以查找其他文件（类/资源）但不是命令行中定义的jar文件。

The $CLASSPATH is only evaluated to find additional files (classes/resources) but not the jar file defined in the command line.

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