Nexus和Maven构建

Question

[首次评论后更新]

在我的settings.xml上

<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">
  <localRepository/>
  <interactiveMode/>
  <usePluginRegistry/>
  <offline/>
  <pluginGroups/>
  <servers/>
  <proxies/>
  <mirrors>
    <mirror>
      <id>nexus</id>
      <mirrorOf>*</mirrorOf>
      <url>http://nexus.company.it:8081/repository/maven-central/</url>
    </mirror>
  </mirrors> 
</settings>

当我尝试运行MVN clean时，我得到

 [INFO] Scanning for projects...
 [INFO]                                                                         
 [INFO] ------------------------------------------------------------------------
 [INFO] Building xxxx Maven Webapp 0.0.1-SNAPSHOT
 [INFO] ------------------------------------------------------------------------
 [WARNING] The POM for org.apache.maven.plugins:maven-clean-plugin:jar:2.5 is missing, no dependency information available
 [INFO] ------------------------------------------------------------------------
 [INFO] BUILD FAILURE
 [INFO] ------------------------------------------------------------------------
 [INFO] Total time: 0.205 s
 [INFO] Finished at: 2016-05-31T10:40:58+02:00
 [INFO] Final Memory: 13M/479M
 [INFO] ------------------------------------------------------------------------
 [ERROR] Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failure to find org.apache.maven.plugins:maven-clean-plugin:jar:2.5 in http://nexus.company.it:8081/repository/maven-central/ was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced -> [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/PluginResolutionException

 Nexus Repository Manager
 OSS 3.0.0-03    
 This maven2 proxy repository is not directly browseable at this URL.

R

Answer 1

我找到了解决方案，即使“MVN Clean-U”仍然不能工作。也许有人能给我指出正确的解决办法

1）插件不在maven-central中。您应该将maven-central和Maven-Release/Snapshots分组为maven-public

2）我禁用了Nexus3中的匿名登录。所以我需要创建一个用户来连接到Nexus3。

<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">
  <localRepository/>
  <interactiveMode/>
  <usePluginRegistry/>
  <offline/>
  <pluginGroups/>
  <profiles/>
  <proxies>
      <proxy>
        <active>true</active>
        <protocol>http</protocol>
        <host>XXX.XXX.XXX.XXX</host>
        <port>XXX</port>
        <nonProxyHosts>XXX.XXX.*|*localhost*|*.company.it*</nonProxyHosts>
      </proxy>
  </proxies>
  <servers>
     <server>
       <id>nexus</id>
       <username>XXXXXXXXXX</username>
       <password>XXXXXXXXXX</password>
     </server>
  </servers>
  <mirrors>
    <mirror>
      <id>nexus</id>
      <mirrorOf>*</mirrorOf>
      <url>http://nexus.company.it:8081/repository/maven-public/</url>
    </mirror>
  </mirrors> 
  <activeProfiles/>
</settings>