Question

叹息。

使用maven 2.2.1，突然间它无法解析maven-clean-plugin。真的，构建工具需要一个“干净”的插件是多么疯狂？

我尝试从另一台运行正常的机器同步我的.m2目录，并得到相同的结果。

taproot:~/$ mvn clean package -DskipTests
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building CRM Webapp
[INFO]    task-segment: [clean, package]
[INFO] ------------------------------------------------------------------------
Downloading: http://download.java.net/maven/2/org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' in repository maven.java.net (http://download.java.net/maven/2)
Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository central (http://repo1.maven.org/maven2): Specified destination directory cannot be created: /Users/armhold/.m2/repository/org/apache/maven/plugins/maven-clean-plugin/2.2
Downloading: http://repository.jboss.org/nexus/content/groups/public-jboss//org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' in repository public jboss (http://repository.jboss.org/nexus/content/groups/public-jboss/)
Downloading: https://repository.jboss.org/nexus/content/repositories/releases//org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[INFO] Unable to find resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' in repository jboss-my-rel (https://repository.jboss.org/nexus/content/repositories/releases/)
Downloading: http://repository.jboss.org/maven2//org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository JBOSS (http://repository.jboss.org/maven2/): Specified destination directory cannot be created: /Users/armhold/.m2/repository/org/apache/maven/plugins/maven-clean-plugin/2.2
Downloading: http://repo1.maven.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.2/maven-clean-plugin-2.2.pom
[WARNING] Unable to get resource 'org.apache.maven.plugins:maven-clean-plugin:pom:2.2' from repository central (http://repo1.maven.org/maven2): Specified destination directory cannot be created: /Users/armhold/.m2/repository/org/apache/maven/plugins/maven-clean-plugin/2.2
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: org.apache.maven.plugins:maven-clean-plugin

Reason: POM 'org.apache.maven.plugins:maven-clean-plugin' not found in repository: Unable to download the artifact from any repository

  org.apache.maven.plugins:maven-clean-plugin:pom:2.2

from the specified remote repositories:
  jboss-my-rel (https://repository.jboss.org/nexus/content/repositories/releases/),
  central (http://repo1.maven.org/maven2),
  maven.java.net (http://download.java.net/maven/2),
  JBOSS (http://repository.jboss.org/maven2/),
  public jboss (http://repository.jboss.org/nexus/content/groups/public-jboss/)

 for project org.apache.maven.plugins:maven-clean-plugin

我的pom看起来像这样：

<repositories>
    <repository>
        <id>public jboss</id>
        <url>http://repository.jboss.org/nexus/content/groups/public-jboss/</url>
    </repository>

    <repository>
        <id>jboss-my-rel</id>
        <url>https://repository.jboss.org/nexus/content/repositories/releases/</url>
    </repository>

    <repository>
        <id>JBOSS</id>
        <name>JBoss Repository</name>
        <url>http://repository.jboss.org/maven2/</url>
    </repository>

</repositories>

<pluginRepositories>
    <pluginRepository>
        <id>maven.java.net</id>
        <name>Java.net Maven2 Repository</name>
        <url>http://download.java.net/maven/2</url>
    </pluginRepository>
</pluginRepositories>

Answer 1

如果您仔细阅读了错误，可以在那里找到答案：

 Specified destination directory cannot be created:
 /Users/armhold/.m2/repository/org/apache/maven/plugins/maven-clean-plugin/2.2

你没有对该目录的写访问权（或者没有运行maven进程的用户）

Answer 2

我也面临类似的问题。但我发现那是代理设置，用于我们的内部网，我没有放入Setting.xml。投入之后，就是热潮......

    <proxy>
        <id>ABC</id>
        <active>true</active>
        <protocol>http</protocol>
        <username>USER</username>
        <password>Password</password>
        <port>8080</port>
        <host>XXX.net</host>
        <nonProxyHosts>local.net,some.host.com</nonProxyHosts>
    </proxy>

Answer 3

我的猜测是你有一个配置或网络问题阻止了maven上网。

Answer 4

我删除了.m2/目录树。然后我在我的项目上做了一个mvn clean，它再次下载了所有内容。

Answer 5

删除.m2文件夹是一种选择。您还可以将maven版本更新为3.x，以便它可以解析您的maven插件。

Maven的困境：在存储库中找不到maven-clean-plugin

5 个答案: