将我的应用程序从JDK8迁移到JDK11时遇到此问题。
[ERROR] Failed to execute goal org.assertj:assertj-assertions-generator-maven-plugin:2.1.0:generate-assertions (default) on project mws-inbound: Execution default of goal org.assertj:assertj-assertions-generator-maven-plugin:2.1.0:generate-assertions failed: A required class was missing while executing org.assertj:assertj-assertions-generator-maven-plugin:2.1.0:generate-assertions: org.junit.rules.TestRule
[ERROR] -----------------------------------------------------
[ERROR] realm = plugin>org.assertj:assertj-assertions-generator-maven-plugin:2.1.0
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/C:/Users/admin/.m2/repository/org/assertj/assertj-assertions-generator-maven-plugin/2.1.0/assertj-assertions-generator-maven-plugin-2.1.0.jar
[ERROR] urls[1] = file:/C:/Users/admin/.m2/repository/org/assertj/assertj-assertions-generator/2.1.0/assertj-assertions-generator-2.1.0.jar
[ERROR] urls[2] = file:/C:/Users/admin/.m2/repository/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar
[ERROR] urls[3] = file:/C:/Users/admin/.m2/repository/commons-cli/commons-cli/1.2/commons-cli-1.2.jar
[ERROR] urls[4] = file:/C:/Users/admin/.m2/repository/com/google/guava/guava/20.0/guava-20.0.jar
[ERROR] urls[5] = file:/C:/Users/admin/.m2/repository/ch/qos/logback/logback-classic/1.0.13/logback-classic-1.0.13.jar
[ERROR] urls[6] = file:/C:/Users/admin/.m2/repository/ch/qos/logback/logback-core/1.0.13/logback-core-1.0.13.jar
[ERROR] urls[7] = file:/C:/Users/admin/.m2/repository/org/assertj/assertj-core/2.9.1/assertj-core-2.9.1.jar
[ERROR] urls[8] = file:/C:/Users/admin/.m2/repository/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar
[ERROR] urls[9] = file:/C:/Users/admin/.m2/repository/commons-io/commons-io/2.5/commons-io-2.5.jar
[ERROR] urls[10] = file:/C:/Users/admin/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar
[ERROR] urls[11] = file:/C:/Users/admin/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.11/plexus-interpolation-1.11.jar
[ERROR] urls[12] = file:/C:/Users/admin/.m2/repository/org/codehaus/plexus/plexus-utils/1.5.15/plexus-utils-1.5.15.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]]
[ERROR]
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:171)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:566)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
at org.codehaus.classworlds.Launcher.main (Launcher.java:47)
Caused by: org.apache.maven.plugin.PluginContainerException: A required class was missing while executing org.assertj:assertj-assertions-generator-maven-plugin:2.1.0:generate-assertions: org.junit.rules.TestRule
我的配置：
<plugin>
<groupId>org.assertj</groupId>
<artifactId>assertj-assertions-generator-maven-plugin</artifactId>
<configuration>
<packages>
<param>com.etech.zws.domain.persistent</param>
<param>com.etech.zws.inbound.model.dto.ping</param>
</packages>
</configuration>
<executions>
<execution>
<goals>
<goal>generate-assertions</goal>
</goals>
</execution>
</executions>
</plugin>
插件似乎无法找到junit jar。
我的junit版本：<junit.version>4.12</junit.version>
这是基本配置。 我以前没有这个问题。
任何帮助将不胜感激。
非常感谢。
答案 0 :(得分：0)
有趣的是：
由以下原因引起：org.apache.maven.plugin.PluginContainerException：A 执行时缺少所需的类 org.assertj：assertj-assertions-generator-maven-plugin：2.1.0：generate-assertions： org.junit.rules.TestRule
Maven插件可能需要依赖项，尤其是依赖项的特定版本。
对于可用于多个测试运行器/框架库（至少是JUnit和TestNG）的AssertJ来说，这很有意义。因此，是的，您可能需要在插件声明中添加junit依赖关系，以指定一个提供所需功能的版本：
<plugin>
<groupId>org.assertj</groupId>
<artifactId>assertj-assertions-generator-maven-plugin</artifactId>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
</dependencies>
<configuration>
<packages>
<param>com.etech.zws.domain.persistent</param>
<param>com.etech.zws.inbound.model.dto.ping</param>
</packages>
</configuration>
<executions>
<execution>
<goals>
<goal>generate-assertions</goal>
</goals>
</execution>
</executions>
</plugin>