NoClassDefFoundError : org.apache.commons.lang.StringUtils
NoClassDefFoundError : org.apache.commons.lang.StringUtils
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
at org.apache.maven.wagon.providers.file.FileWagon.resolveDestinationPath(FileWagon.java:206)
at org.apache.maven.wagon.providers.file.FileWagon.putDirectory(FileWagon.java:157)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.push(AbstractDeployMojo.java:441)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deploy(AbstractDeployMojo.java:323)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deployTo(AbstractDeployMojo.java:284)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.execute(AbstractDeployMojo.java:166)
at org.apache.maven.plugins.site.deploy.SiteStageMojo.execute(SiteStageMojo.java:78)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
... 20 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
... 28 more
当我尝试 运行
时会发生这种情况
mvn site site:stage
pom.xml 是：
<dependencyManagement>
<dependencies>
<!-- Appengine Dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-testing</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-stubs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-labs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<!-- Libraries -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>com.googlecode.lambdaj</groupId>
<artifactId>lambdaj</artifactId>
<version>2.3.3</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.4</version>
<configuration>
<port>9000</port>
<tempWebappDirectory>${basedir}/target/site/tempdir</tempWebappDirectory>
</configuration>
<executions>
<execution>
<id>attach-descriptor</id>
<goals>
<goal>attach-descriptor</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>
org.codehaus.mojo
</groupId>
<artifactId>
versions-maven-plugin
</artifactId>
<versionRange>
[2.1,)
</versionRange>
<goals>
<goal>
display-dependency-updates
</goal>
<goal>
display-plugin-updates
</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
<!-- standard plugins -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>3.2</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.2</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.5</version>
</plugin>
<!-- appengine -->
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.target.version}</version>
<configuration>
<enableJarClasses>false</enableJarClasses>
<!-- Comment in the below snippet to bind to all IPs instead of just
localhost -->
<!-- address>0.0.0.0</address> <port>8080</port -->
<!-- Comment in the below snippet to enable local debugging with a remove
debugger like those included with Eclipse or IntelliJ -->
<!-- jvmFlags> <jvmFlag>-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n</jvmFlag>
</jvmFlags -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.9</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
<reportSets>
<reportSet>
<reports>
<report>index</report>
<report>dependencies</report>
<report>dependency-convergence</report>
<report>dependency-management</report>
<report>distribution-management</report>
<report>modules</report>
<report>plugin-management</report>
<report>plugins</report>
<report>summary</report>
<report>issue-tracking</report>
<report>scm</report>
</reports>
</reportSet>
</reportSets>
</plugin>
</plugins>
</reporting>
在存储库中，我在 commons-lang/commons-lang/ 文件夹中看到了
其中有四个 2.1、2.4、2.5、2.6，但 2.1 和 2.4 在文件夹中没有 jar，只有其他文件。 2.5和2.6文件夹里有jar。
在 org/apache/commons/commons-lang3 文件夹中，我看到一个带有 jar
的 3.1
我已经将其分解为绝对基本观察点，以便有类似经验的人可以帮助我。
您没有将 commons-lang 声明为依赖项。添加
<dependencies>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
给你的pom.xml
您的 pom.xml 应该如下所示：
<dependencies>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<!-- Appengine Dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-testing</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-stubs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-labs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<!-- Libraries -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>com.googlecode.lambdaj</groupId>
<artifactId>lambdaj</artifactId>
<version>2.3.3</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.4</version>
<configuration>
<port>9000</port>
<tempWebappDirectory>${basedir}/target/site/tempdir</tempWebappDirectory>
</configuration>
<executions>
<execution>
<id>attach-descriptor</id>
<goals>
<goal>attach-descriptor</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>
org.codehaus.mojo
</groupId>
<artifactId>
versions-maven-plugin
</artifactId>
<versionRange>
[2.1,)
</versionRange>
<goals>
<goal>
display-dependency-updates
</goal>
<goal>
display-plugin-updates
</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
<!-- standard plugins -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>3.2</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.2</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.5</version>
</plugin>
<!-- appengine -->
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.target.version}</version>
<configuration>
<enableJarClasses>false</enableJarClasses>
<!-- Comment in the below snippet to bind to all IPs instead of just
localhost -->
<!-- address>0.0.0.0</address> <port>8080</port -->
<!-- Comment in the below snippet to enable local debugging with a remove
debugger like those included with Eclipse or IntelliJ -->
<!-- jvmFlags> <jvmFlag>-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n</jvmFlag>
</jvmFlags -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.9</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
<reportSets>
<reportSet>
<reports>
<report>index</report>
<report>dependencies</report>
<report>dependency-convergence</report>
<report>dependency-management</report>
<report>distribution-management</report>
<report>modules</report>
<report>plugin-management</report>
<report>plugins</report>
<report>summary</report>
<report>issue-tracking</report>
<report>scm</report>
</reports>
</reportSet>
</reportSets>
</plugin>
</plugins>
</reporting>
尝试将此依赖项添加到您的 pom.xml
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
由于 OP 没有指定细节我猜这可能是关于 运行 maven on Ubuntu 14.
Ubuntu 上的 Maven 打包似乎有一些 "issue"。
在 Ubuntu 14.04.1 LTS 中 apt-get install maven 并尝试使用 mvn package 打包我的项目后，我遇到了同样的异常。
解决方法from comment on github是：
sudo ln -s ../../java/commons-lang.jar /usr/share/maven/lib
至少在我的情况下修复了 maven。
检查你的commons-lang版本，我的是2.6版
使用 sudo 查找 / | grep commons-lang
在插件之前添加依赖项并确保 id 以 I not i:
开头
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
不按照 wiki 构建没有
controller/opendaylight/distribution/opendaylight/target
为了./run.sh
所以我现在正在寻找 ??
对我来说，问题似乎在于访问本地 Maven 存储库中的工件，所以我只是从本地 Maven 存储库中删除了整个 org/apache 文件夹并解决了问题。
org.apache.maven.lifecycle.LifecycleExecutionException: 无法执行目标 org.apache.maven.plugins:maven-site-plugin:3.6:stage (default-cli) on project a1: Execution default-cli of goal org.apache.maven.plugins :maven-site-plugin:3.6:stage failed: A required class was missing while execution org.apache.maven.plugins:maven-site-plugin:3.6:stage: org/apache/commons/lang/StringUtils
国外进口数量：1
导入：条目[从领域 ClassRealm 导入[maven.api，父级：null]]
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:125)
... 20 more
原因：java.lang.NoClassDefFoundError：org/apache/commons/lang/StringUtils
在 org.apache.maven.wagon.providers.file.FileWagon.resolveDestinationPath(FileWagon.java:206)
在 org.apache.maven.wagon.providers.file.FileWagon.putDirectory(FileWagon.java:157)
在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.push(AbstractDeployMojo.java:452)
在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deploy(AbstractDeployMojo.java:332)
在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deployTo(AbstractDeployMojo.java:293)
在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.execute(AbstractDeployMojo.java:172)
在 org.apache.maven.plugins.site.deploy.SiteStageMojo.execute(SiteStageMojo.java:71)
在 org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
... 还有 20 个
原因：java.lang.ClassNotFoundException：org.apache.commons.lang.StringUtils
在 org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
在 org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
在 org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
在 org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
org.apache.commons.lang.StringUtils 运行 Maven 在 Ubuntu
上丢失
一些 Maven 目标如 site:stage 在 Ubuntu 14.04 下失败
A required class was missing while executing
org.apache.maven.plugins:maven-site-plugin:3.4:stage: org/apache/commons/lang/StringUtils
如果您使用缺少 commons-lang 依赖项的 Ubuntu Maven 包，就会发生这种情况。您可以解压缩独立的 Maven 归档文件或使用以下命令：
CD /usr/share/maven/lib
须藤 ln -s ../../java/commons-lang.jar 。
https://wiki.apache.org/commons/VfsProblems
您应该使用 pom.xml 更改 commons-lang3.jar 依赖版本。如果您在 java 简单项目中编写代码，请添加另一个 jar，无论您使用的是什么版本。
或者您可以检查 jar 复制不应该存在。
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
at org.apache.maven.wagon.providers.file.FileWagon.resolveDestinationPath(FileWagon.java:206)
at org.apache.maven.wagon.providers.file.FileWagon.putDirectory(FileWagon.java:157)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.push(AbstractDeployMojo.java:441)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deploy(AbstractDeployMojo.java:323)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deployTo(AbstractDeployMojo.java:284)
at org.apache.maven.plugins.site.deploy.AbstractDeployMojo.execute(AbstractDeployMojo.java:166)
at org.apache.maven.plugins.site.deploy.SiteStageMojo.execute(SiteStageMojo.java:78)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
... 20 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.StringUtils
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
... 28 more
当我尝试 运行
时会发生这种情况mvn site site:stage
pom.xml 是：
<dependencyManagement>
<dependencies>
<!-- Appengine Dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-testing</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-stubs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-labs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<!-- Libraries -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>com.googlecode.lambdaj</groupId>
<artifactId>lambdaj</artifactId>
<version>2.3.3</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.4</version>
<configuration>
<port>9000</port>
<tempWebappDirectory>${basedir}/target/site/tempdir</tempWebappDirectory>
</configuration>
<executions>
<execution>
<id>attach-descriptor</id>
<goals>
<goal>attach-descriptor</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>
org.codehaus.mojo
</groupId>
<artifactId>
versions-maven-plugin
</artifactId>
<versionRange>
[2.1,)
</versionRange>
<goals>
<goal>
display-dependency-updates
</goal>
<goal>
display-plugin-updates
</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
<!-- standard plugins -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>3.2</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.2</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.5</version>
</plugin>
<!-- appengine -->
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.target.version}</version>
<configuration>
<enableJarClasses>false</enableJarClasses>
<!-- Comment in the below snippet to bind to all IPs instead of just
localhost -->
<!-- address>0.0.0.0</address> <port>8080</port -->
<!-- Comment in the below snippet to enable local debugging with a remove
debugger like those included with Eclipse or IntelliJ -->
<!-- jvmFlags> <jvmFlag>-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n</jvmFlag>
</jvmFlags -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.9</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
<reportSets>
<reportSet>
<reports>
<report>index</report>
<report>dependencies</report>
<report>dependency-convergence</report>
<report>dependency-management</report>
<report>distribution-management</report>
<report>modules</report>
<report>plugin-management</report>
<report>plugins</report>
<report>summary</report>
<report>issue-tracking</report>
<report>scm</report>
</reports>
</reportSet>
</reportSets>
</plugin>
</plugins>
</reporting>
在存储库中，我在 commons-lang/commons-lang/ 文件夹中看到了
其中有四个 2.1、2.4、2.5、2.6，但 2.1 和 2.4 在文件夹中没有 jar，只有其他文件。 2.5和2.6文件夹里有jar。
在 org/apache/commons/commons-lang3 文件夹中，我看到一个带有 jar
我已经将其分解为绝对基本观察点，以便有类似经验的人可以帮助我。
您没有将 commons-lang 声明为依赖项。添加
<dependencies>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
给你的pom.xml
您的 pom.xml 应该如下所示：
<dependencies>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<!-- Appengine Dependencies -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-testing</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-stubs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-labs</artifactId>
<version>${appengine.target.version}</version>
</dependency>
<!-- Libraries -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>com.googlecode.lambdaj</groupId>
<artifactId>lambdaj</artifactId>
<version>2.3.3</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.4</version>
<configuration>
<port>9000</port>
<tempWebappDirectory>${basedir}/target/site/tempdir</tempWebappDirectory>
</configuration>
<executions>
<execution>
<id>attach-descriptor</id>
<goals>
<goal>attach-descriptor</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>
org.codehaus.mojo
</groupId>
<artifactId>
versions-maven-plugin
</artifactId>
<versionRange>
[2.1,)
</versionRange>
<goals>
<goal>
display-dependency-updates
</goal>
<goal>
display-plugin-updates
</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
<!-- standard plugins -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>3.2</version>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.2</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.5</version>
</plugin>
<!-- appengine -->
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.target.version}</version>
<configuration>
<enableJarClasses>false</enableJarClasses>
<!-- Comment in the below snippet to bind to all IPs instead of just
localhost -->
<!-- address>0.0.0.0</address> <port>8080</port -->
<!-- Comment in the below snippet to enable local debugging with a remove
debugger like those included with Eclipse or IntelliJ -->
<!-- jvmFlags> <jvmFlag>-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n</jvmFlag>
</jvmFlags -->
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.17</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.9</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
<reportSets>
<reportSet>
<reports>
<report>index</report>
<report>dependencies</report>
<report>dependency-convergence</report>
<report>dependency-management</report>
<report>distribution-management</report>
<report>modules</report>
<report>plugin-management</report>
<report>plugins</report>
<report>summary</report>
<report>issue-tracking</report>
<report>scm</report>
</reports>
</reportSet>
</reportSets>
</plugin>
</plugins>
</reporting>
尝试将此依赖项添加到您的 pom.xml
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
由于 OP 没有指定细节我猜这可能是关于 运行 maven on Ubuntu 14.
Ubuntu 上的 Maven 打包似乎有一些 "issue"。
在 Ubuntu 14.04.1 LTS 中 apt-get install maven 并尝试使用 mvn package 打包我的项目后，我遇到了同样的异常。
解决方法from comment on github是：
sudo ln -s ../../java/commons-lang.jar /usr/share/maven/lib
至少在我的情况下修复了 maven。
检查你的commons-lang版本，我的是2.6版 使用 sudo 查找 / | grep commons-lang
在插件之前添加依赖项并确保 id 以 I not i:
开头<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
不按照 wiki 构建没有 controller/opendaylight/distribution/opendaylight/target 为了./run.sh 所以我现在正在寻找 ??
对我来说，问题似乎在于访问本地 Maven 存储库中的工件，所以我只是从本地 Maven 存储库中删除了整个 org/apache 文件夹并解决了问题。
org.apache.maven.lifecycle.LifecycleExecutionException: 无法执行目标 org.apache.maven.plugins:maven-site-plugin:3.6:stage (default-cli) on project a1: Execution default-cli of goal org.apache.maven.plugins :maven-site-plugin:3.6:stage failed: A required class was missing while execution org.apache.maven.plugins:maven-site-plugin:3.6:stage: org/apache/commons/lang/StringUtils
国外进口数量：1 导入：条目[从领域 ClassRealm 导入[maven.api，父级：null]]
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:125)
... 20 more
原因：java.lang.NoClassDefFoundError：org/apache/commons/lang/StringUtils 在 org.apache.maven.wagon.providers.file.FileWagon.resolveDestinationPath(FileWagon.java:206) 在 org.apache.maven.wagon.providers.file.FileWagon.putDirectory(FileWagon.java:157) 在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.push(AbstractDeployMojo.java:452) 在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deploy(AbstractDeployMojo.java:332) 在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.deployTo(AbstractDeployMojo.java:293) 在 org.apache.maven.plugins.site.deploy.AbstractDeployMojo.execute(AbstractDeployMojo.java:172) 在 org.apache.maven.plugins.site.deploy.SiteStageMojo.execute(SiteStageMojo.java:71) 在 org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) ... 还有 20 个 原因：java.lang.ClassNotFoundException：org.apache.commons.lang.StringUtils 在 org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50) 在 org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259) 在 org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235) 在 org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227)
org.apache.commons.lang.StringUtils 运行 Maven 在 Ubuntu
一些 Maven 目标如 site:stage 在 Ubuntu 14.04 下失败
A required class was missing while executing
org.apache.maven.plugins:maven-site-plugin:3.4:stage: org/apache/commons/lang/StringUtils
如果您使用缺少 commons-lang 依赖项的 Ubuntu Maven 包，就会发生这种情况。您可以解压缩独立的 Maven 归档文件或使用以下命令：
CD /usr/share/maven/lib
须藤 ln -s ../../java/commons-lang.jar 。
https://wiki.apache.org/commons/VfsProblems
您应该使用 pom.xml 更改 commons-lang3.jar 依赖版本。如果您在 java 简单项目中编写代码，请添加另一个 jar，无论您使用的是什么版本。 或者您可以检查 jar 复制不应该存在。