Maven Junit测试"noClassDefFoundError"; [英] Maven Junit tests "noClassDefFoundError"
问题描述
我在Junit测试中使用Maven.我正在使用标准的Maven项目结构,并且可以在Eclipse中运行以Junit测试运行",它们都可以成功,但是如果我要运行Maven测试/安装,则测试将无法运行,从而导致错误无法初始化" class main.sushi.persistence.Persistor".
I am using Maven with Junit tests. I am using the standard Maven project structure and I can run the "run as Junit test" in Eclipse and they all succeed but if I want to run Maven test / install then the tests are not running, resulting in the error "Could not initialize class main.sushi.persistence.Persistor".
这是我们的项目树:
├── pom.xml
├── src
│ ├── main
│ │ ├── java
│ │ │ └── main
│ │ │ └── sushi
│ │ │ └── persistence
│ │ │ ├── DatabaseEnvironments.java
│ │ │ ├── META-INF
│ │ │ │ ├── persistence.xml
│ │ │ │ └── persistence_template.xml
│ │ │ └── Persistor.java
│ │ └── resources
│ └── test
│ ├── java
│ │ ├── META-INF
│ │ │ ├── persistence.xml
│ │ │ └── persistence_template.xml
│ │ └── test
│ │ └── sushi
│ │ └── persistence
│ │ ├── ProcessPersistorTest.java
│ │ └── TestPersistor.java
│ └── resources
└── target
├── classes
│ ├── META-INF
│ │ ├── MANIFEST.MF
│ │ └── maven
│ │ └── sushi
│ │ └── SushiPersistence
│ │ ├── pom.properties
│ │ └── pom.xml
│ └── main
│ └── sushi
│ └── persistence
│ ├── DatabaseEnvironments.class
│ ├── META-INF
│ │ ├── persistence.xml
│ │ └── persistence_template.xml
│ └── Persistor.class
├── generated-sources
│ └── annotations
├── surefire
├── surefire-reports
│ ├── TEST-test.sushi.persistence.ProcessPersistorTest.xml
│ ├── TEST-test.sushi.persistence.TestPersistor.xml
│ ├── test.sushi.persistence.ProcessPersistorTest.txt
│ └── test.sushi.persistence.TestPersistor.txt
└── test-classes
├── META-INF
│ ├── persistence.xml
│ └── persistence_template.xml
└── test
└── sushi
└── persistence
├── ProcessPersistorTest.class
└── TestPersistor.class
pom:
<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>sushi</groupId>
<artifactId>SushiPersistence</artifactId>
<version>SNAPSHOT</version>
<repositories>
<repository>
<id>EclipseLink</id>
<url>http://download.eclipse.org/rt/eclipselink/maven.repo</url>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>de.hpi-web.sushicommon</groupId>
<artifactId>SushiCommon</artifactId>
<version>SNAPSHOT</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
<version>2.3.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa</artifactId>
<version>2.0.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.22</version>
</dependency>
</dependencies>
</project>
推荐答案
旧问题,但我会提供答案,因为前几天我遇到了一个非常相似的问题. 我在project.model包中为Foo类编写了单元测试,该包在project.cache包中具有Bar类型的成员.当maven运行单元测试时,我在创建Bar类型的模拟程序时遇到了以上错误.
Old question but I'll provide my answer since I had a very similar issue the other day. I was writing a unittest for class Foo in package project.model which had a member of type Bar in package project.cache. When maven were to run the unittests, I got the above error on creating a mock of type Bar.
运行mvn verify -X时,我注意到运行测试时类路径中缺少目标/类.
When running mvn verify -X, I noticed that target/classes was missing from the classpath when running the test.
我通过在pom中添加以下内容解决了该问题.
I solved it by adding the following to the pom.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.0</version>
<configuration>
<additionalClasspathElements>
<additionalClasspathElement>${project.basedir}/target/classes</additionalClasspathElement>
</additionalClasspathElements>
</configuration>
</plugin>
</plugins>
</build>
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