maven-javadoc-plugin以警告的形式发布诊断消息。

Question

我的github发布工作流包括maven-javadoc-plugin。这个插件会发出大量的警告，但是当我看到这些消息时，它们中没有一个是最轻微的令人担忧的，它们都只是诊断性的信息。

就像某些n00b使用警告级日志记录语句发出调试级或跟踪级消息一样：

Warning: ARNING] Javadoc Warnings
Warning: ARNING] Loading source files for package io.github.mikenakis.bathyscaphe...
Warning: ARNING] Loading source files for package io.github.mikenakis.bathyscaphe.annotations...
Warning: ARNING] Constructing Javadoc information...
Warning: ARNING] Building index for all the packages and classes...
Warning: ARNING] Standard Doclet version 17.0.3+7-LTS
Warning: ARNING] Building tree for all the packages and classes...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/ImmutabilitySelfAssessable.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/Invariable.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/InvariableArray.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/ThreadSafe.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/package-summary.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/package-tree.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/package-summary.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/package-tree.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/class-use/ImmutabilitySelfAssessable.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/class-use/Invariable.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/class-use/InvariableArray.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/class-use/ThreadSafe.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/package-use.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/io/github/mikenakis/bathyscaphe/annotations/package-use.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/overview-tree.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/index.html...
Warning: ARNING] Building index for all classes...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/allclasses-index.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/allpackages-index.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/index-all.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/overview-summary.html...
Warning: ARNING] Generating /home/runner/work/Bathyscaphe/Bathyscaphe/target/checkout/claims/target/apidocs/help-doc.html...

请注意，谷歌搜索与我的问题相关的关键词会产生很多结果，但每一个结果都是关于人们收到maven-javadoc-plugin的合法警告，甚至是错误的情况，他们在问如何抑制这些警告。

这不是我的问题；我的javadoc不生成警告；但是在发出明显是信息性的消息时，该工具一直使用警告级别。

那么，为什么会发生这种情况，我怎样才能防止它发生呢？

同时，当它:有人知道为什么领先的"[W“是从每一行缺失？(为什么“警告：”出现在每行的前面？)

Answer 1

通过添加quiet=true，可以避免javadoc中的信息性消息。

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-javadoc-plugin</artifactId>
   <configuration>
      <quiet>true</quiet>
   </configuration>
</plugin>

还有一个bug抱怨新的javadoc行为，并对如何在maven-javadoc-plugin：https://bugs.openjdk.org/browse/JDK-8270831中处理这个问题进行了小小的讨论。