maven执行器插件和子pom

Question

我正在尝试使用maven enforcer插件来确保激活一个配置文件（requireActivatProfile规则）。请参阅本页的第二个示例：需要活动配置文件

它可以很好地与单个pom文件配合使用。当我尝试将它与2个pom文件（一个父文件和一个子文件）一起使用时，当我尝试构建子模块时，这将不再起作用。

我知道为什么它不起作用吗？

---

完整示例：

EXAMPLE
|   pom.xml <1> (parent pom)
|
---child
        pom.xml <2> (child pom)

父pom文件<1>：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app.parent</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>
  <profiles>
    <profile>
      <id>first</id>
      <properties>
        <my-name>Alice</my-name>
      </properties>
    </profile>
    <profile>
      <id>second</id>
      <properties>
        <my-name>Bob</my-name>
      </properties>
    </profile>
  </profiles>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>1.4.1</version>
        <executions>
          <execution>
            <id>enforce-first-or-second-profile-is-active</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireActiveProfile>
                  <profiles>first,second</profiles>
                  <all>false</all>
                </requireActiveProfile>
              </rules>
              <fail>true</fail>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-antrun-plugin</artifactId>
        <executions>
          <execution>
            <phase>compile</phase>
            <goals>
              <goal>run</goal>
            </goals>
            <configuration>
              <tasks>
                <echo>Hello ${my-name}!</echo>
              </tasks>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

子pom文件<2>：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.mycompany.app</groupId>
    <artifactId>my-app.parent</artifactId>
    <version>1.0-SNAPSHOT</version>
  </parent>
  <artifactId>my-app</artifactId>
  <packaging>pom</packaging>
</project>

现在我运行：

EXAMPLE>cd child
EXAMPLEchild>mvn compile -Psecond

输出看起来是这样的：

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building my-app 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-enforcer-plugin:1.4.1:enforce (enforce-first-or-second-profile-is-active) @ my-app ---
[WARNING] Rule 0: org.apache.maven.plugins.enforcer.RequireActiveProfile failed with message:
Profile "first" is not activated.
Profile "second" is not activated.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.178 s
[INFO] Finished at: 2015-10-30T18:03:50+01:00
[INFO] Final Memory: 24M/989M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.4.1:enforce (enforce-first-or-second-profile-is-active) on project my-app: Some Enforcer rules have failed. Look above for specific messages explaining why the rule failed. -> [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/MojoExecutionException

当我在父pom上运行maven时，它是有效的。我错过了什么？

Answer 1

Maven概要文件有点令人困惑，但我将根据我的经验大胆解释一下。

概要文件定义不是继承的，但它们的效果是继承的。

如果您跳转到child目录并运行mvn -Pfirst help:active-profiles，您将看到父配置文件的效果确实存在：

部分输出：

...
<properties>
  <my-name>Alice</my-name>
</properties>
...

但你不会在那里看到概要文件定义。

坏消息是，除非每个孩子都定义了所需的配置文件，否则enforcer规则在这种情况下不起作用。

好消息是，有了这些新知识，您可以使用另一个enforcer规则（requireProperty）来实现您想要的：

   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-enforcer-plugin</artifactId>
    <version>1.4.1</version>
    <executions>
      <execution>
        <id>enforce-property</id>
        <goals>
          <goal>enforce</goal>
        </goals>
        <configuration>
          <rules>
            <requireProperty>
              <property>my-name</property>
              <message>You must set a my-name property! Did you activate the right profile?</message>
            </requireProperty>
          </rules>
          <fail>true</fail>
        </configuration>
      </execution>
    </executions>
  </plugin>