我正在运行一个批处理的小型python脚本，该脚本可以通过运行其所有Junit测试来自动对一堆Java程序进行评分。我使用导出的Eclipse项目，将其解压缩，然后调用maven运行测试。我没有对原始Eclipse项目进行任何更改，并且测试在Eclipse中运行良好。
这是我第一次使用Maven。
作为参考，我在Windows 10上运行，并且我的路径都已正确设置，并且我相信它们与Eclipse中发生的情况匹配。
Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-
10T11:41:47-05:00)
Maven home: C:\Program Files\Apache\apache-maven-3.3.9
Java version: 1.8.0_111, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.8.0_111\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "dos"
我收到以下错误：
-------------------------------------------------------
T E S T S
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org.apache.maven.surefire.util.SurefireReflectionException: java.lang.reflect.InvocationTargetException; nested exception is java.lang.reflect.InvocationTargetException: null
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: java.lang.NoClassDefFoundError: edu/brandeis/cs12b/PA7/PA7/target/test-classes/edu/brandeis/cs12b/PA7/KnowledgeBaseTest (wrong name: edu/brandeis/cs12b/PA7/KnowledgeBaseTest)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.apache.maven.surefire.util.DefaultScanResult.loadClass(DefaultScanResult.java:131)
at org.apache.maven.surefire.util.DefaultScanResult.applyFilter(DefaultScanResult.java:95)
at org.apache.maven.surefire.junit4.JUnit4Provider.scanClassPath(JUnit4Provider.java:194)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:92)
... 9 more
Results :
Tests run: 0, Failures: 0, Errors: 0, Skipped: 0
这是POM文件的副本：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>edu.brandeis.cs12b.pa7</groupId>
<artifactId>PA7</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>PA7</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
最佳答案
造成原因：java.lang.NoClassDefFoundError：
edu / brandeis / cs12b / PA7 / PA7 / target / test-classes / edu / brandeis / cs12b / PA7 / KnowledgeBaseTest
（错误名称：edu / brandeis / cs12b / PA7 / KnowledgeBaseTest）
这很奇怪：您在项目中似乎有两次PA7程序包，但在类的程序包中却没有。
这可能是您的问题，因为Maven将wrong name称为错误。
此外，应避免在包：edu/brandeis/cs12b/PA7中使用大写字母。它与Java约定相反。