如何解决“原因:找不到类org.apache.tools.ant.taskdefs.optional.junit.JUnitTask"在运行“蚂蚁测试"时? [英] How to solve "Cause: the class org.apache.tools.ant.taskdefs.optional.junit.JUnitTask was not found." while running "ant test"?

问题描述

我有一个名为 test 的目标，我想做一些测试.

I have a target named test and I want to do some tests.

我把重要的部分放在 build.xml 中.它包括:

I put here the important parts in build.xml. It includes:

<property name='lib.dir' value='lib' />

<path id='classpath'>
     <fileset dir="${lib.dir}" includes="**/*.jar" />
</path>

并且我已经将 junit.jar 和 ant-junit.jar(它是必须的吗?)放在 lib 目录中.

And I have put the junit.jar and ant-junit.jar(is it a must?) in the lib directory.

但是，如果我运行

蚂蚁测试.

输出错误为:

test:

BUILD FAILED
/home/xiaohan/EclipseWorkSpace/AntTest/build.xml:82: Problem: failed to create task or type junit
Cause: the class org.apache.tools.ant.taskdefs.optional.junit.JUnitTask was not found.
        This looks like one of Ant's optional components.
Action: Check that the appropriate optional JAR exists in
        -/usr/share/ant/lib
        -/home/xiaohan/.ant/lib
        -a directory added on the command line with the -lib argument

Do not panic, this is a common problem.
The commonest cause is a missing JAR.

This is not a bug; it is a configuration problem

另外，如果我把两个jar文件放在/usr/share/ant/lib中，设置了$ANT_HOME，还是不行.

Additionally, if I put the two jar files in /usr/share/ant/lib with the $ANT_HOME set, it still does not work.

非常感谢您的任何提示

推荐答案

就我而言(使用 Mint，基于 Debian)

In my case (using Mint, based on Debian)

sudo apt-get install ant-optional

是唯一有效的方法.

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