Question

我在我的maven项目中使用 JMockit 1.13 。测试用例运行良好。但是现在我更新到 JMockit 1.17 ，现在我在运行这样的测试用例时看到控制台上的错误

java.lang.NoClassDefFoundError: org.junit.runner.Runner
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:61)
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26)
    at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:31)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:77)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:68)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

当我将JMockit版本更改为 1.13 时，测试用例开始运行。我使用的是JUnit版本 4.11 。

pom.xml文件

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>group1</groupId>
        <artifactId>myproject1</artifactId>
        <version>2.1.0.0</version>
    </parent>
    <artifactId>folder</artifactId>
    <name>myproject</name>
    <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.jmockit</groupId>
            <artifactId>jmockit</artifactId>
            <version>1.17</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
        </dependency>
        <dependency>
            <groupId>org.jmockit</groupId>
            <artifactId>jmockit-coverage</artifactId>
            <version>1.11</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject2</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject3</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject4</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject5</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject6</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject7</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject8</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>group1</groupId>
            <artifactId>myproject9</artifactId>
            <version>2.1.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-csv</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>
    <reporting>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>findbugs-maven-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <findbugsXmlOutput>true</findbugsXmlOutput>
                    <findbugsXmlWithMessages>true</findbugsXmlWithMessages>
                    <xmlOutput>true</xmlOutput>
                    <!-- Enables analysis which takes more memory but finds more bugs. If 
                        you run out of memory, changes the value of the effort element to 'Low'. -->
                    <effort>Max</effort>
                    <!-- Reports all bugs (other values are medium and max) -->
                    <threshold>Low</threshold>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-project-info-reports-plugin</artifactId>
                <version>2.7</version>
            </plugin>
        </plugins>
    </reporting>
</project>

Maven依赖树

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building myproject 2.1.0.0
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ myproject ---
[INFO] group1:myproject:jar:2.1.0.0
[INFO] +- org.jmockit:jmockit:jar:1.17:test
[INFO] +- junit:junit:jar:4.11:test
[INFO] |  \- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.7:compile
[INFO] |  +- org.slf4j:slf4j-api:jar:1.7.7:compile
[INFO] |  \- log4j:log4j:jar:1.2.17:compile
[INFO] +- org.jmockit:jmockit-coverage:jar:1.11:compile
[INFO] +- group1:myproject1:jar:2.1.0.0:compile
[INFO] |  +- com.googlecode.jmockit:jmockit:jar:1.7:compile
[INFO] |  +- com.googlecode.jmockit:jmockit-coverage:jar:0.999.26:compile
[INFO] |  +- org.apache.commons:commons-lang3:jar:3.1:compile
[INFO] |  +- org.hibernate:hibernate-entitymanager:jar:4.3.5.Final:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging:jar:3.1.3.GA:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging-annotations:jar:1.2.0.Beta1:compile
[INFO] |  |  +- org.hibernate:hibernate-core:jar:4.3.5.Final:compile
[INFO] |  |  |  +- antlr:antlr:jar:2.7.7:compile
[INFO] |  |  |  \- org.jboss:jandex:jar:1.1.0.Final:compile
[INFO] |  |  +- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  |  +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.4.Final:compile
[INFO] |  |  +- org.jboss.spec.javax.transaction:jboss-transaction-api_1.2_spec:jar:1.0.0.Final:compile
[INFO] |  |  \- org.javassist:javassist:jar:3.18.1-GA:compile
[INFO] |  +- commons-net:commons-net:jar:3.3:compile
[INFO] |  +- org.postgis:postgis-jdbc:jar:2.1.3:compile
[INFO] |  |  \- postgresql:postgresql:jar:9.1-901.jdbc4:compile
[INFO] |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] |  +- org.hibernate:hibernate-spatial:jar:4.3:compile
[INFO] |  \- com.vividsolutions:jts:jar:1.13:compile
[INFO] +- group1:myproject2:jar:2.1.0.0:compile
[INFO] |  \- com.jcraft:jsch:jar:0.1.51:compile
[INFO] +- group1:myproject3:jar:2.1.0.0:compile
[INFO] +- group1:myproject4:jar:2.1.0.0:compile
[INFO] +- group1:myproject5:jar:2.1.0.0:compile
[INFO] |  +- org.hibernate:hibernate-c3p0:jar:4.3.5.Final:compile
[INFO] |  |  \- com.mchange:c3p0:jar:0.9.2.1:compile
[INFO] |  |     \- com.mchange:mchange-commons-java:jar:0.2.3.4:compile
[INFO] |  \- org.postgresql:postgresql:jar:9.3-1100-jdbc41:compile
[INFO] +- group1:myproject6:jar:2.1.0.0:compile
[INFO] +- group1:myproject7:jar:2.1.0.0:compile
[INFO] +- group1:myproject8jar:2.1.0.0:compile
[INFO] |  +- xerces:xercesImpl:jar:2.9.1:compile
[INFO] |  |  \- xml-apis:xml-apis:jar:1.3.04:compile
[INFO] |  +- group1:myproject9:pom:2.1.0.0:compile
[INFO] |  \- net.sf.dozer:dozer:jar:5.5.1:compile
[INFO] |     +- commons-beanutils:commons-beanutils:jar:1.9.1:compile
[INFO] |     |  \- commons-collections:commons-collections:jar:3.2.1:compile
[INFO] |     \- org.slf4j:jcl-over-slf4j:jar:1.7.5:compile
[INFO] \- org.apache.commons:commons-csv:jar:1.2:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 10.768 s
[INFO] Finished at: 2015-10-13T15:56:52+05:30
[INFO] Final Memory: 10M/124M
[INFO] ------------------------------------------------------------------------

更新所有poms后的依赖树：

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building myproject1 2.1.0.0
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ myproject1 ---
[INFO] group1:myproject1:jar:2.1.0.0
[INFO] +- org.jmockit:jmockit:jar:1.17:test
[INFO] +- junit:junit:jar:4.11:test
[INFO] |  \- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.7:compile
[INFO] |  +- org.slf4j:slf4j-api:jar:1.7.7:compile
[INFO] |  \- log4j:log4j:jar:1.2.17:compile
[INFO] +- org.jmockit:jmockit-coverage:jar:1.17:compile
[INFO] +- group1:myproject2:jar:2.1.0.0:compile
[INFO] |  +- org.apache.commons:commons-lang3:jar:3.1:compile
[INFO] |  +- org.hibernate:hibernate-entitymanager:jar:4.3.5.Final:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging:jar:3.1.3.GA:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging-annotations:jar:1.2.0.Beta1:compile
[INFO] |  |  +- org.hibernate:hibernate-core:jar:4.3.5.Final:compile
[INFO] |  |  |  +- antlr:antlr:jar:2.7.7:compile
[INFO] |  |  |  \- org.jboss:jandex:jar:1.1.0.Final:compile
[INFO] |  |  +- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  |  +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.4.Final:compile
[INFO] |  |  +- org.jboss.spec.javax.transaction:jboss-transaction-api_1.2_spec:jar:1.0.0.Final:compile
[INFO] |  |  \- org.javassist:javassist:jar:3.18.1-GA:compile
[INFO] |  +- commons-net:commons-net:jar:3.3:compile
[INFO] |  +- org.postgis:postgis-jdbc:jar:2.1.3:compile
[INFO] |  |  \- postgresql:postgresql:jar:9.1-901.jdbc4:compile
[INFO] |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] |  +- org.hibernate:hibernate-spatial:jar:4.3:compile
[INFO] |  \- com.vividsolutions:jts:jar:1.13:compile
[INFO] +- group1:myproject3:jar:2.1.0.0:compile
[INFO] |  \- com.jcraft:jsch:jar:0.1.51:compile
[INFO] +- group1:myproject4:jar:2.1.0.0:compile
[INFO] +- group1:myproject5:jar:2.1.0.0:compile
[INFO] +- group1:myproject6:jar:2.1.0.0:compile
[INFO] |  +- org.hibernate:hibernate-c3p0:jar:4.3.5.Final:compile
[INFO] |  |  \- com.mchange:c3p0:jar:0.9.2.1:compile
[INFO] |  |     \- com.mchange:mchange-commons-java:jar:0.2.3.4:compile
[INFO] |  \- org.postgresql:postgresql:jar:9.3-1100-jdbc41:compile
[INFO] +- group1:myproject7:jar:2.1.0.0:compile
[INFO] +- group1:myproject8:jar:2.1.0.0:compile
[INFO] +- group1:myproject9:jar:2.1.0.0:compile
[INFO] |  +- xerces:xercesImpl:jar:2.9.1:compile
[INFO] |  |  \- xml-apis:xml-apis:jar:1.3.04:compile
[INFO] |  +- group1:parent1:pom:2.1.0.0:compile
[INFO] |  \- net.sf.dozer:dozer:jar:5.5.1:compile
[INFO] |     +- commons-beanutils:commons-beanutils:jar:1.9.1:compile
[INFO] |     |  \- commons-collections:commons-collections:jar:3.2.1:compile
[INFO] |     \- org.slf4j:jcl-over-slf4j:jar:1.7.5:compile
[INFO] \- org.apache.commons:commons-csv:jar:1.2:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.106 s
[INFO] Finished at: 2015-10-14T21:07:14+05:30
[INFO] Final Memory: 10M/23M
[INFO] ------------------------------------------------------------------------

使用termianl上的mvn test运行project1时的堆栈跟踪。此堆栈跟踪显示多次。显示每个文件的堆栈跟踪。

java.lang.NoClassDefFoundError: org.junit.runner.Runner
    at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:61)
    at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:26)
    at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:250)
    at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
    at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    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)

Answer 1

问题的答案就在Maven依赖树中：它显示了类路径中存在多个版本的JMockit（org.jmockit:jmockit:jar:1.17，org.jmockit:jmockit-coverage:jar:1.11，com.googlecode.jmockit:jmockit:jar:1.7和{ {1}}）。

删除早于com.googlecode.jmockit:jmockit-coverage:jar:0.999.26的版本，如果也使用了coverage工具，请确保它与模拟库的版本相同。

Answer 2

对于仍然来到此线程的任何人，此问题的另一个可能原因是您的单元测试运行时JRE使用的是Java JRE而不是Java JDK。

如果我用jre1.8.0替换jdk1.8.0，我会得到上面的确切错误。

JMockit版本1.17显示错误NoClassDefFoundError：org.junit.runner.Runner？

2 个答案: