Maven无法下载tomcat-maven-plugin快照

Question

即使在擦除了我的settings.xml之后,我仍然在尝试使用此快照依赖项时收到此错误.鉴于依赖性:

<plugin>            
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>tomcat-maven-plugin</artifactId>
    <version>1.0-SNAPSHOT</version>
    <configuration>                 
        <path>/licensing</path>
        <tomcatWebXml>${basedir}/src/main/mock/web.xml</tomcatWebXml>
    </configuration>
</plugin>

和(在POM中),插件存储库定义:

<pluginRepository>
    <id>Codehaus Snapshots</id>
    <url>http://snapshots.repository.codehaus.org</url>
    <snapshots>
        <enabled>true</enabled>
    </snapshots>
    <releases>
        <enabled>true</enabled>  <!-- Workaround for MNG-2974, see note below -->
    </releases>
</pluginRepository> 

我留下了以下404错误.如果我真的导航到那个仓库,它正在寻找的罐子不存在,只是过时的(我不熟悉Maven如何最终解析预期的依赖名称的机制).

想法？

Downloading: http://snapshots.repository.codehaus.org/org/codehaus/mojo/tomcat-maven-plugin/1.0-SNAPSHOT/tomcat-maven-pl
ugin-1.0-SNAPSHOT.jar
[INFO] Unable to find resource 'org.codehaus.mojo:tomcat-maven-plugin:maven-plugin:1.0-SNAPSHOT' in repository Codehaus
Snapshots (http://snapshots.repository.codehaus.org)
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] A required plugin was not found: Plugin could not be found - check that the goal name is correct: Unable to downl
oad the artifact from any repository

Try downloading the file manually from the project website.

Then, install it using the command:
    mvn install:install-file -DgroupId=org.codehaus.mojo -DartifactId=tomcat-maven-plugin -Dversion=1.0-SNAPSHOT -Dpacka
ging=maven-plugin -Dfile=/path/to/file

Alternatively, if you host your own repository you can deploy the file there:
    mvn deploy:deploy-file -DgroupId=org.codehaus.mojo -DartifactId=tomcat-maven-plugin -Dversion=1.0-SNAPSHOT -Dpackagi
ng=maven-plugin -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]


  org.codehaus.mojo:tomcat-maven-plugin:maven-plugin:1.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2),
  Codehaus Snapshots (http://snapshots.repository.codehaus.org)


  org.codehaus.mojo:tomcat-maven-plugin:maven-plugin:1.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2),
  Codehaus Snapshots (http://snapshots.repository.codehaus.org)


[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2 seconds
[INFO] Finished at: Wed Jan 06 10:06:49 EST 2010
[INFO] Final Memory: 14M/36M
[INFO] ------------------------------------------------------------------------

Answer 1

我重新检查,并使用以下pom片段:

<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">
  ...
  <pluginRepositories>
    <pluginRepository>
      <id>Codehaus Snapshots</id>
      <url>http://snapshots.repository.codehaus.org/</url>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
      <releases>
        <enabled>true</enabled>  <!-- Workaround for MNG-2974, see note below -->
      </releases>
    </pluginRepository>
  </pluginRepositories>
  ...
  <build>
    <finalName>my-webapp</finalName>
    <plugins>
      ...
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>tomcat-maven-plugin</artifactId>
        <version>1.0-SNAPSHOT</version>
      </plugin>
      ...
    </plugins>
   ...
  </build>
</project>

该插件的SNAPSHOT已成功下载:

$ mvn clean
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building my-webapp Maven Webapp
[INFO]    task-segment: [clean]
[INFO] ------------------------------------------------------------------------
[INFO] snapshot org.codehaus.mojo:tomcat-maven-plugin:1.0-SNAPSHOT: checking for updates from Codehaus Snapshots
[INFO] snapshot org.codehaus.mojo:tomcat-maven-plugin:1.0-SNAPSHOT: checking for updates from maven2-repository.dev.java.net
Downloading: http://snapshots.repository.codehaus.org//org/codehaus/mojo/tomcat-maven-plugin/1.0-SNAPSHOT/tomcat-maven-plugin-1.0-20091222.232027-11.pom
5K downloaded  (tomcat-maven-plugin-1.0-20091222.232027-11.pom)
Downloading: http://snapshots.repository.codehaus.org//org/codehaus/mojo/tomcat-maven-plugin/1.0-SNAPSHOT/tomcat-maven-plugin-1.0-20091222.232027-11.jar
48K downloaded  (tomcat-maven-plugin-1.0-20091222.232027-11.jar)
[INFO] [clean:clean {execution: default-clean}]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 9 seconds
[INFO] Finished at: Wed Jan 06 16:13:28 CET 2010
[INFO] Final Memory: 7M/78M
[INFO] ------------------------------------------------------------------------

这很奇怪,因为我看不出任何差异,但事情正如预期的那样运作.换句话说,我无法重现......

在本地存储库中,您是否maven-metadata*.xml在1.0-SNAPSHOT目录中有tomcat-maven-plugin工件的文件？它们是否与远程服务器上的匹配？他们是否正确指定了内部版本号和时间戳？

如果它们在本地不正确,那么运行maven -U可能会有所帮助.

您还可以检查mvn help:effective-pom并查看Maven updatePolicy对该存储库上的快照的看法.

或者只是从本地存储库中删除您的tomcat-maven-plugin工件,然后重试.

如果没有任何帮助,请尝试手动安装(从存储库下载插件并使用mvn install:install-filemojo)或从VCS检出源并在本地构建它.但是这些选项只是解决方法,你在某个地方遇到了问题(你使用的是什么版本的maven？).

Answer 2

我知道这篇文章有点旧,但tomcat maven插件已被移动到apache maven存储库.Codehaus只承载插件的1.0版本.如果你想要2.0快照(所以你可以运行tomcat 7),你需要稍微更改你的pom.xml.请注意,2.0正在开发中.

<repositories>
...
    <repository>
        <id>people.apache.snapshots</id>
        <url>http://repository.apache.org/content/groups/snapshots-group/</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

<pluginRepositories>
    <pluginRepository>
        <id>apache.snapshots</id>
        <name>Apache Snapshots</name>
        <url>http://repository.apache.org/content/groups/snapshots-group/</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </pluginRepository>
</pluginRepositories>

你的插件配置是这样的:

<plugin>
    <groupId>org.apache.tomcat.maven</groupId>
    <artifactId>tomcat7-maven-plugin</artifactId>
    <version>2.0-SNAPSHOT</version>
</plugin>