为什么我在 Maven 中收到“401 未经授权”错误?
为什么我在 Maven 中收到“401 未经授权”错误?
这是我在调用时遇到的错误(底部的完整日志):mvn deploy
[INFO] BUILD FAILURE
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project xbnjava: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized. -> [Help 1]
根据这个声纳型支持页面:
“如果您收到401,那是因为maven发送了错误的登录凭据,或者根本没有凭据。
以下是我采取的步骤,下面是我的完整和文件,下面是 来自 和 的完整日志。settings.xml
pom.xml
mvn deploy
mvn deploy -e
任何想法将不胜感激。我只是和Maven一起打了一堵又一堵墙。
我在收到401错误时遵循了sonatype的清单:
清单项 1。通过登录Nexus UI确保您的用户名/密码正确无误。如果 curl 已安装在计算机上,则可以尝试使用...
- 我已成功登录和退出 sonatype.org 网站,使用 user/pass in .
settings.xml
- 我试图使用命令手动部署工件
curl
[C:\]curl -u MY_SONATYPE_DOT_COM_USERNAME:MY_SONATYPE_DOT_COM_PASSWORD https://oss.sonatype.org/content/repositories/snapshots/com/github/aliteralmind/xbnjava/0.1.2-SNAPSHOT/xbnjava-0.1.2-20140716.224928-1.pom --request PUT --data @pom.xml
但得到这个错误:
Warning: Couldn't read data from file "pom.xml", this makes an empty POST.
curl: (60) SSL certificate problem, verify that the CA cert is OK. Details:
error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.
我用这个选项再次运行它,这次只得到这个:-k
Couldn't read data from file "pom.xml", this makes an empty POST.
我以前从未使用过curl,所以我不知道如何处理这些信息。
清单项 2.如果没有错误输出,请确保在服务器上正确配置了用户权限。请确保删除刚创建的存储库。
我不知道“下降”是什么意思。我相信我的特权已正确安装,因为我从sonatype收到以下消息:
- 配置已准备就绪,现在您可以:
- 将快照工件部署到存储库 https://oss.sonatype.org/content/repositories/snapshots
- 将发布工件部署到暂存存储库 https://oss.sonatype.org/service/local/staging/deploy/maven2
- 将暂存工件提升到存储库“发布”
- 从组 https://oss.sonatype.org/content/groups/public 下载快照和发布工件
- 从暂存组 https://oss.sonatype.org/content/groups/staging 下载快照、发布和暂存工件
在过去的几天里,我已经成功地将这些项目放到了服务器上。mvn deploy
项目的设置:
清单项 3.确保已在设置中配置服务器
.xml
并且服务器 ID 与 pom.xml 中的分发存储库 ID 相同。
- 在 中,设置/服务器/服务器/ID 等于
settings.xml
ossrh
- 在 中,distributionManagement/snapshotRepository/id 等于
pom.xml
ossrh
(完整文件位于底部)
清单项 4.确保您的设置.xml位于正确的位置(通常是 _~/.m2/settings.xml)。您可以通过运行 mvn help:effective-settings 来检查这一点。
根据 Maven 的设置参考,设置.xml必须位于以下两个位置之一:
- Maven 安装:
$M2_HOME/conf/settings.xml
- 用户的安装:
${user.home}/.m2/settings.xml
这是我的设置:
-
settings.xml
:C:\applications\programming\apache-maven-3.2.2\conf\settings.xml
-
M2_HOME
是C:\applications\programming\apache-maven-3.2.2
输出 :mvn help:effective-settings
[C:\applications\utilities\curl]
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-help-plugin:2.2:effective-settings (default-cli) @ standalone-pom ---
[INFO]
Effective user-specific configuration settings:
<?xml version="1.0" encoding="UTF-8"?>
<!-- ====================================================================== -->
<!-- -->
<!-- Generated by Maven Help Plugin on 2014-07-18T12:48:19 -->
<!-- See: http://maven.apache.org/plugins/maven-help-plugin/ -->
<!-- -->
<!-- ====================================================================== -->
<!-- ====================================================================== -->
<!-- -->
<!-- Effective Settings for 'jeffy' on 'kermit-the-frog' -->
<!-- -->
<!-- ====================================================================== -->
<settings xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:sc
hemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
<localRepository xmlns="http://maven.apache.org/SETTINGS/1.1.0">C:\Users\jeffy\.m2\repository</localRepository
>
<servers xmlns="http://maven.apache.org/SETTINGS/1.1.0">
<server>
<username>MY_SONATYPE_DOT_COM_USERNAME</username>
<password>***</password>
<id>ossrh</id>
</server>
</servers>
<pluginGroups xmlns="http://maven.apache.org/SETTINGS/1.1.0">
<pluginGroup>org.apache.maven.plugins</pluginGroup>
<pluginGroup>org.codehaus.mojo</pluginGroup>
</pluginGroups>
</settings>
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.310 s
[INFO] Finished at: 2014-07-18T12:48:19-04:00
[INFO] Final Memory: 7M/17M
[INFO] ------------------------------------------------------------------------
清单项 5.如果服务器使用的是 https,但 POM 中的 URL 是 http,则您可能也会得到 401。
我不明白它指的是哪个网址。
清单项 6.使用最新版本的 Maven,因为存在有关 401 的已知问题:MNG-4469
我使用的是最新版本:
[C:\]mvn -version
Apache Maven 3.2.2 (45f7c06d68e745d05611f7fd14efb6594181933e; 2014-06-17T09:51:42-04:00)
Maven home: C:\applications\programming\apache-maven-3.2.2
Java version: 1.7.0_51, vendor: Oracle Corporation
Java home: C:\applications\programming\jdk_7_51\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"
------------------
完整和文件settings.xml
pom.xml
(以下版本的完整日志)mvn deploy
mvn deploy -e
settings.xml
:
<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
<servers>
<server>
<id>ossrh</id>
<username>MY_SONATYPE_DOT_COM_USERNAME</username>
<password>MY_SONATYPE_DOT_COM_PASSWORD</password>
</server>
</servers>
<pluginGroups></pluginGroups>
<proxies></proxies>
<mirrors></mirrors>
<profiles></profiles>
</settings>
pom.xml:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.github.aliteralmind</groupId>
<artifactId>xbnjava</artifactId>
<packaging>pom</packaging>
<version>0.1.2</version>
<name>XBN-Java</name>
<url>https://github.com/aliteralmind/xbnjava</url>
<inceptionYear>2014</inceptionYear>
<organization>
<name>Jeff Epstein</name>
</organization>
<description>XBN-Java is a collection of generically-useful backend (server side, non-GUI) programming utilities, featuring RegexReplacer and FilteredLineIterator. XBN-Java is the foundation of Codelet (http://codelet.aliteralmind.com).</description>
<parent>
<groupId>org.sonatype.oss</groupId>
<artifactId>oss-parent</artifactId>
<version>7</version>
</parent>
<licenses>
<license>
<name>Lesser General Public License (LGPL) version 3.0</name>
<url>https://www.gnu.org/licenses/lgpl-3.0.txt</url>
</license>
<license>
<name>Apache Software License (ASL) version 2.0</name>
<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
</license>
</licenses>
<developers>
<developer>
<name>Jeff Epstein</name>
<email>aliteralmind-github@yahoo.com</email>
<roles>
<role>Lead Developer</role>
</roles>
</developer>
</developers>
<issueManagement>
<system>GitHub Issue Tracker</system>
<url>https://github.com/aliteralmind/xbnjava/issues</url>
</issueManagement>
<distributionManagement>
<snapshotRepository>
<id>ossrh</id>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
</snapshotRepository>
</distributionManagement>
<scm>
<connection>scm:git:git@github.com:aliteralmind/xbnjava.git</connection>
<url>scm:git:git@github.com:aliteralmind/xbnjava.git</url>
<developerConnection>scm:git:git@github.com:aliteralmind/xbnjava.git</developerConnection>
</scm>
<properties>
<java.version>1.7</java.version>
<jarprefix>R:\jeffy\programming\build\/${project.artifactId}-${project.version}/download/${project.artifactId}-${project.version}</jarprefix>
</properties>
<!--
<profiles>
<profile>
<id>default-tools.jar</id>
<activation>
<property>
<name>java.vendor</name>
<value>Sun Microsystems Inc.</value>
</property>
</activation>
<dependencies>
<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.4.2</version>
<scope>system</scope>
<systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>
</dependencies>
</profile>
</profiles>
-->
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<id>attach-artifacts</id>
<phase>package</phase>
<goals>
<goal>attach-artifact</goal>
</goals>
<configuration>
<artifacts>
<artifact>
<file>${jarprefix}-all.jar</file>
<type>jar</type>
</artifact>
</artifacts>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<profiles>
<!--
This profile will sign the JAR file, sources file, and javadocs file using the GPG key on the local machine.
See: https://docs.sonatype.org/display/Repository/How+To+Generate+PGP+Signatures+With+Maven
-->
<profile>
<id>release-sign-artifacts</id>
<activation>
<property>
<name>release</name>
<value>true</value>
</property>
</activation>
</profile>
</profiles>
</project>
------------------
和 的完整日志mvn deploy
mvn deploy -e
mvn deploy
输出:
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building XBN-Java 0.1.2
[INFO] ------------------------------------------------------------------------
[INFO] --- maven-enforcer-plugin:1.0:enforce (enforce-maven) @ xbnjava ---
[INFO] --- build-helper-maven-plugin:1.8:attach-artifact (attach-artifacts) @ xbnjava ---
[INFO] --- maven-install-plugin:2.4:install (default-install) @ xbnjava ---
[INFO] Installing R:\jeffy\programming\sandbox\z__for_git_commit_only\xbnjava\pom.xml to C:\Users\jeffy\.m2\repository\com\github\aliteralmind\xbnjava\0.1.2\xbnjava-0.1.2.pom
[INFO] Installing R:\jeffy\programming\build\xbnjava-0.1.2\download\xbnjava-0.1.2-all.jar to C:\Users\jeffy\.m2\repository\com\github\aliteralmind\xbnjava\0.1.2\xbnjava-0.1.2.jar
[INFO] --- maven-deploy-plugin:2.7:deploy (default-deploy) @ xbnjava ---
Uploading: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom
2/6 KB
4/6 KB
6/6 KB
(故障部分:)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.204 s
[INFO] Finished at: 2014-07-18T11:25:17-04:00
[INFO] Final Memory: 7M/17M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project xbnjava: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized. -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
mvn deploy -e
输出:
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building XBN-Java 0.1.2
[INFO] ------------------------------------------------------------------------
[INFO] --- maven-enforcer-plugin:1.0:enforce (enforce-maven) @ xbnjava ---
[INFO] --- build-helper-maven-plugin:1.8:attach-artifact (attach-artifacts) @ xbnjava ---
[INFO] --- maven-install-plugin:2.4:install (default-install) @ xbnjava ---
[INFO] Installing R:\jeffy\programming\sandbox\z__for_git_commit_only\xbnjava\pom.xml to C:\Users\jeffy\.m2\repository\com\github\aliteralmind\xbnjava\0.1.2\xbnjava-0.1.2.pom
[INFO] Installing R:\jeffy\programming\build\xbnjava-0.1.2\download\xbnjava-0.1.2-all.jar to C:\Users\jeffy\.m2\repository\com\github\aliteralmind\xbnjava\0.1.2\xbnjava-0.1.2.jar
[INFO] --- maven-deploy-plugin:2.7:deploy (default-deploy) @ xbnjava ---
Uploading: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom
2/6 KB
4/6 KB
6/6 KB
(故障部分:)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.492 s
[INFO] Finished at: 2014-07-18T11:25:37-04:00
[INFO] Final Memory: 7M/17M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project xbnjava: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project xbnjava: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized.
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:157)
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:606)
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)
Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized.
at org.apache.maven.plugin.deploy.DeployMojo.execute(DeployMojo.java:193)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 19 more
Caused by: org.apache.maven.artifact.deployer.ArtifactDeploymentException: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized.
at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:143)
at org.apache.maven.plugin.deploy.AbstractDeployMojo.deploy(AbstractDeployMojo.java:167)
at org.apache.maven.plugin.deploy.DeployMojo.execute(DeployMojo.java:149)
... 21 more
Caused by: org.eclipse.aether.deployment.DeploymentException: Failed to deploy artifacts: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized.
at org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:337)
at org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:268)
at org.eclipse.aether.internal.impl.DefaultRepositorySystem.deploy(DefaultRepositorySystem.java:413)
at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:139)
... 23 more
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact com.github.aliteralmind:xbnjava:pom:0.1.2 from/to sonatype-nexus-staging (https://oss.sonatype.org/service/local/staging/deploy/maven2/): Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized.
at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$6.wrap(WagonRepositoryConnector.java:1016)
at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$6.wrap(WagonRepositoryConnector.java:1004)
at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$PutTask.run(WagonRepositoryConnector.java:895)
at org.eclipse.aether.connector.wagon.WagonRepositoryConnector.put(WagonRepositoryConnector.java:522)
at org.eclipse.aether.internal.impl.DefaultDeployer.deploy(DefaultDeployer.java:331)
... 26 more
Caused by: org.apache.maven.wagon.TransferFailedException: Failed to transfer file: https://oss.sonatype.org/service/local/staging/deploy/maven2/com/github/aliteralmind/xbnjava/0.1.2/xbnjava-0.1.2.pom. Return code is: 401, ReasonPhrase: Unauthorized.
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:573)
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:493)
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:474)
at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.put(AbstractHttpClientWagon.java:454)
at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$PutTask.run(WagonRepositoryConnector.java:871)
... 28 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException