ClassNotFoundException的 - 运行ant，junit的时候 [英] ClassNotFoundException - when running ant-junit

问题描述

我试图创造理念，为实际应用的证明，我们的任务是无添加的东西对全球环境运行ant-JUnit测试。我在蚂蚁迄今取得它，但是，我坚持用下面的例外。 ClassTest.java是具有样本单元测试用例的Java类。 （Junit的3.0样式）。我不知道为什么蚂蚁的JUnit没有找到在batchrun任务提路径的类inspite。

I'm trying to create a Proof of concept for the actual application, The task is to run ant-junit tests without adding stuff to the global environment. I've achieved it so far in ant, but, I'm stuck with the following exception. ClassTest.java is the java class that has sample unit testcase. (Junit 3.0 style). I'm not sure why ant-junit does not find the class inspite of mentioning the paths in the batchrun task.

项目结构

我运行蚂蚁junit任务时，出现以下情况例外。

I get the following exception when running ant-junit task.

Testsuite: ClassTest
Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0 sec

    Caused an ERROR
ClassTest
java.lang.ClassNotFoundException: ClassTest
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:249)
    at org.eclipse.ant.internal.launching.remote.EclipseSingleCheckExecutor.executeTargets(EclipseSingleCheckExecutor.java:30)
    at org.eclipse.ant.internal.launching.remote.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
    at org.eclipse.ant.internal.launching.remote.InternalAntRunner.run(InternalAntRunner.java:424)
    at org.eclipse.ant.internal.launching.remote.InternalAntRunner.main(InternalAntRunner.java:138)

我的Ant build.xml文件是

My ant build.xml file is

<project name="Java project build" default="build">
<property name="project.local.directory" value="C:\Users\usrpao\workspace\Ant" />
<property name="src.path" value="${project.local.directory}/src" />
<property name="lib.path" value="${project.local.directory}/lib" />
<property name="dest.path" value="${project.local.directory}/target" />
<property name="junit.output.dir" value="${project.local.directory}/junit" />

<path id="classpath.test">
    <fileset dir="lib">
        <include name="**/*.jar" />
    </fileset>
</path>

<!--<taskdef name="junit" classname="org.apache.tools.ant.taskdefs.optional.junit.JUnitTask">
    <classpath refid="classpath.test" />
</taskdef> -->

<path id="MyProject.classpath">
    <pathelement location="lib/ant-junit.jar" />
    <pathelement location="lib/junit.jar" />
        <pathelement location="bin/*.*"/>
</path>

<path id="lib.classpath">
    <pathelement location="lib/ant-junit.jar" />
    <pathelement location="lib/junit.jar" />
</path>

<target name="build" depends="clean">
    <javac srcdir="${src.path}" destdir="${dest.path}" classpathref="lib.classpath">
    </javac>
    <antcall target="test">
    </antcall>
</target>

<target name="clean">

</target>

<target name="test">
    <pathconvert property="testoutput" refid="classpath.test" />
    <echo>Path = ${testoutput}</echo>
    <mkdir dir="${junit.output.dir}" />
    <junit haltonerror="false" showoutput="true">

        <classpath refid="MyProject.classpath">
        </classpath>
        <batchtest todir="${junit.output.dir}">
            <formatter type="plain" />
            <fileset dir="${src.path}/com/ant/test">
                <include name="**/*Test*.java" />
            </fileset>
        </batchtest>

    </junit>
</target>

推荐答案

而类实际上是在你的类路径引用斌目录中的目标目录。你应该修改 MyProject.classpath 引用包括 $ {} project.local.directory /目标：

Your classpath is referencing the bin directory while the classes are actually under the target directory. You should change the MyProject.classpath reference to include ${project.local.directory}/target:

<path id="MyProject.classpath">
   <pathelement location="lib/ant-junit.jar" />
   <pathelement location="lib/junit.jar" />
   <dirset dir="${project.local.directory}">
        <include name="target"/>
    </dirset>
</path>

此外，你应该通过删除相应的程序包文件夹修改的JUnit中的文件集元素任务命名测试类的，否则，你仍然会得到一个的ClassNotFoundException ：

<junit haltonerror="false" showoutput="true">

    <classpath refid="MyProject.classpath">
    </classpath>
    <batchtest todir="${junit.output.dir}">
        <formatter type="plain" />
        <fileset dir="${src.path}">  <!-- remove com/ant/test corresponding to package name -->
            <include name="**/*Test*.java" />
        </fileset>
    </batchtest>

</junit>

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