如何确保版权声明陪我所有的源文件为Java的Maven构建？

Question

有没有人强制执行他们的Java版权声明纳入一种标准方法/ Maven的建立？我意识到，因为产品本身是复制书面和，如果有人有我的消息来源我有更大的问题，它不应该是必要的，但我被要求检查并想知道如果的CheckStyle，PMD还是其他什么东西自动处理这

是否有一个工具，其处理用于版权检查？

Answer 1

Yes, Checkstyle (and the maven-checkstyle-plugin) can do that, it can check that every source files do contain a license header. Put that header in a text file and use the headerLocation to point on it (it uses by default LICENSE.txt).

Let's say you want to use checkstyle.license for your copyright notices. For a multi-modules build, the standard approach is to create a dedicated module to host Checkstyle resources (see Multimodule configuration):

whizbang
|-- pom.xml
|-- build-tools
|   |-- src
|   |   `-- main
|   |       `-- resources
|   |           `-- whizbang
|   |               |-- checkstyle.xml
|   |               `-- checkstyle.license
|   `-- pom.xml
|-- core
|-- gui
|-- jmx
`-- src

Then, include the Checkstyle configuration in the top level pom.xml.

<pluginManagement>
  <plugins>
    <!-- Apply checkstyle rules and fail the build in case of errors. The
         checkstyle config files are taken from the build-tools JAR module.-->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-checkstyle-plugin</artifactId>
      <!-- Lock down plugin version for build reproducibility -->
      <version>2.4</version>
      <dependencies>
        <dependency>
          <groupId>com.example.whizbang</groupId>
          <artifactId>build-tools</artifactId>
          <version>1.0</version>
        </dependency>
      </dependencies>
      <configuration>
        <consoleOutput>true</consoleOutput>
        <configLocation>whizbang/checkstyle.xml</configLocation>
        <headerLocation>whizbang/checkstyle.license</headerLocation>
      </configuration>
      <executions>
        <execution>
          <goals>
            <goal>check</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
    ...
  </plugins>
</pluginManagement>

This setup will ensure that a copyright header is present in source files (and apply other Checkstyle rules but this is another story). Adapt it to suit your needs.

Answer 2

I just found http://code.google.com/p/maven-license-plugin/ seems reasonable too