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我已經完成了以下步驟：嘗試編譯mahout但出現錯誤 - 無法執行mojo：資源。建立未使用的pom.xml
- 安裝的Java 1.6
- 我使用Ubuntu 11.10。在/etc/bash.bachrc中添加了$ JAVA_HOME路徑
- 已安裝的maven。
mvn --version正在顯示已安裝的maven。 - 從網上下載
http://svn.apache.org/repos/asf/mahout/trunk
現在亨利馬烏，我去象夫/行李箱內，並嘗試做mvn clean install或mvn clean install -X -e，那麼它給follwoing錯誤 -
無法執行魔力：資源。它需要一個具有 pom.xml的項目，但構建不使用它。
我只是想嘗試在mahout/examples中的例子。如何解決這個錯誤？
該目錄中有一個pom.xml。
完全端子輸出是在這裏：
+ Error stacktraces are turned on.
Apache Maven 2.2.1 (rdebian-6)
Java version: 1.6.0_23
Java home: /usr/lib/jvm/java-6-openjdk/jre
Default locale: en_IN, platform encoding: UTF-8
OS name: "linux" version: "3.0.0-16-generic" arch: "i386" Family: "unix"
[DEBUG] Building Maven user-level plugin registry from: '/home/kartikeya/.m2/plugin-registry.xml'
[DEBUG] Building Maven global-level plugin registry from: '/usr/share/maven2/conf/plugin-registry.xml'
[INFO] Scanning for projects...
[DEBUG] Wagons could not be registered as the extension container was never created
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Default Project
[INFO] task-segment: [clean, install]
[INFO] ------------------------------------------------------------------------
[DEBUG] Retrieving parent-POM: org.apache.maven.plugins:maven-plugins:pom:12 for project: null:maven-clean-plugin:maven-plugin:2.3 from the repository.
[DEBUG] Retrieving parent-POM: org.apache.maven:maven-parent:pom:9 for project: org.apache.maven.plugins:maven-plugins:pom:12 from the repository.
[DEBUG] Retrieving parent-POM: org.apache:apache:pom:4 for project: org.apache.maven:maven-parent:pom:9 from the repository.
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Cannot execute mojo: clean. It requires a project with an existing pom.xml, but the build is not using one.
[INFO] ------------------------------------------------------------------------
[DEBUG] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Cannot execute mojo: clean. It requires a project with an existing pom.xml, but the build is not using one.
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
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:616)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: Cannot execute mojo: clean. It requires a project with an existing pom.xml, but the build is not using one.
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:414)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
... 17 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Wed Mar 21 11:32:36 IST 2012
[INFO] Final Memory: 2M/55M
[INFO] ------------------------------------------------------------------------
您可以驗證有一個POM沒有的pom.xml。 xml在你正在運行的目錄「mvn clean install」？ – aliasmrchips 2012-03-21 06:38:36
是的，該目錄中有一個pom.xml。 – 2012-03-21 07:12:04
安裝最新的maven 3.0.4，從〜/ .m2中刪除所有文件（或移動到其他位置）並重試。它適用於我 – 2012-03-21 07:30:24