Exception in thread "main" java.lang.NoClassDefFoundError:
org/junit/runner/JUnitCore
at springbook.learningtest.junit.JUnitTest.main(JUnitTest.java:7)
Caused by: java.lang.ClassNotFoundException: org.junit.runner.JUnitCore
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
我在java.lang.NoClassDefFoundError in junit
中发现了类似的错误。但我已使用junit
将maven
添加到我的项目中。然后,我检查了Maven Dependencies,发现有junit-4.12.jar。
我尝试了一些不同版本的junit
和spring
,但我的所有尝试都失败了。下面我附上了我的代码。
<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>TobySpring3.1</groupId>
<artifactId>TobySpring3.1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source />
<target />
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!-- MySQL -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.45</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument</artifactId>
<version>3.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.1.4.RELEASE</version>
</dependency>
<!-- JUNIT -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<!-- CGLIB -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
</dependencies>
</project>
以上是我的pom.xml
package springbook.learningtest.junit;
import org.junit.runner.JUnitCore;
public class JUnitTest {
public static void main(String[] args) {
JUnitCore.main("springbook.user.test.UserDaoTest");
}
}
package springbook.user.test;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import java.sql.SQLException;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import springbook.user.dao.UserDao;
import springbook.user.domain.User;
public class UserDaoTest {
@Test
public void addAndGet() throws ClassNotFoundException, SQLException {
ApplicationContext context = new GenericXmlApplicationContext("applicationContext.xml");
UserDao dao = context.getBean("userDao", UserDao.class);
User user = new User();
user.setId("gyumee");
user.setName("name");
user.setPassword("password");
dao.add(user);
User user2 = dao.get(user.getId());
assertThat(user2.getName(), is(user.getName()));
assertThat(user2.getPassword(), is(user.getPassword()));
}
}
答案 0 :(得分:1)
令人惊讶的是,我也遇到了同样的错误日志,添加这些hamcrest-core
解决了我的问题。
<!-- https://mvnrepository.com/artifact/org.hamcrest/hamcrest-core -->
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
来自Here。
答案 1 :(得分:1)
当我用maven将junit
更改为4.7时,它仍无法正常工作。我检查了Maven Dependencies
并且junit-4.7.jar
。仍然是相同的错误消息。我再次在junit-4.7.jar
中添加了Java Build Path
(见下图)
然后,它运作良好!但是,我仍然不知道为什么会出现这个问题;(。有谁知道为什么?
答案 2 :(得分:1)
您正在通过测试套件运行测试类,这些测试套件作为Java应用程序而不是作为测试运行。 在pom for junit依赖项中,删除范围“ test” ,因为范围被定义为测试,这就是测试套件无法找到JUnit类的原因。
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
答案 3 :(得分:0)
我什至收到与相同的错误 线程“ main”中的异常java.lang.NoClassDefFoundError:org / junit / runner / JUnitCore
我在这里基本上要尝试的是直接调用(我的应用程序的)可执行jar文件来运行JUnit测试。当我在本地运行该应用程序时,它可以正常工作,并且main与测试执行一起被调用
public static void main( String[] args )
{
System.out.println( "Hello World!" );
System.out.println("Starting Integration Tests!");
JUnitCore engine = new JUnitCore();
engine.run(test.class);
}
这将调用测试类并运行所有所需的测试,但是当我尝试从命令行执行jar时,如下所示,它将失败 C:\ Users \ tripate \ eclipse \ testing \ target> java -jar testing-0.0.1-SNAPSHOT.jar 你好,世界! 开始集成测试!
Exception in thread "main" java.lang.NoClassDefFoundError: org/junit/runner/JUnitCore
at MVP2.testing.App.main(App.java:15)
Caused by: java.lang.ClassNotFoundException: org.junit.runner.JUnitCore
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
注意:jar是在这里作为Maven构建的一部分生成的。 我的POM文件中同时具有JUnit和hamcrest依赖项