maven-2 - Maven:无法使帮助目标正常工作(clean:help、compiler:help 等)

Question

我是 Maven 的新手。你知道我做错了什么吗(见下文)？

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mvn -e clean:help.  + Error stacktraces are turned on.  [INFO] Scanning for projects...  [INFO] Searching repository for plugin with prefix: 'clean'.  [INFO] ------------------------------------------------------------------------ [ERROR] BUILD FAILURE  [INFO] ------------------------------------------------------------------------  [INFO] Required goal not found: clean:help in org.apache.maven.plugins:maven-clean-plugin:2.2  [INFO] ------------------------------------------------------------------------  [INFO] Trace  org.apache.maven.BuildFailureException: Required goal not found: clean:help in org.apache.maven.plugins:maven-clean-plugin:2.2    at   org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1867)    at   org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListByAggregationNeeds(DefaultLifecycleExecutor.java:462)    at   org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:175)    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)

Answer 1

您在命令行 (2.2) 上使用的插件版本没有 clean:help目标(自 2.3 起)。试试这个:

mvn org.apache.maven.plugins:maven-clean-plugin:2.4:help