带有多个模块的tomcat-maven-plugin和pluginManagement

Question

I have a strange behavior when I user tomcat-plugin, in my parent project I declare the plugin configuration in the pluginmanagement.

I have 3 child war project, two of them declare the plugin and one did not declare the plugin.

For an unknown reason the plugin is execute in the first project but I don't understand why.

Here is a sample of my parent project.

<?xml version="1.0"?>
<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/maven-v4_0_0.xsd">
  <groupId>my.groupID</groupId>
  <artifactId>parent</artifactId>
  <packaging>pom</packaging>
  <version>1.0.0</version>
  <name>parent</name>

  <build>
    ...
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.tomcat.maven</groupId>
          <artifactId>tomcat7-maven-plugin</artifactId>
          <version>2.2</version>
          <configuration>
            <server>local</server>
            <update>true</update>
            <charset>UTF-8</charset>                
          </configuration>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

Here is the sample of the child1 (the plugin isn't declare):

<?xml version="1.0"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <artifactId>parentProject</artifactId>
    <groupId>my.groupID</groupId>
    <version>1.0.0</version>
  </parent>

  <groupId>my.groupID</groupId>
  <artifactId>child1</artifactId>
  <packaging>war</packaging>

  <build>
    ...
  </build>
</project>

Here is the sample of the child2 (the plugin is declare)

<?xml version="1.0"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <artifactId>parentProject</artifactId>
    <groupId>my.groupID</groupId>
    <version>1.0.0</version>
  </parent>

  <groupId>my.groupID</groupId>
  <artifactId>child2</artifactId>
  <packaging>war</packaging>

  <properties>
    <urlTomcat>http://localhost:8080/</urlTomcat>
    <pathApp>child2</pathApp>
  </properties>

  <profiles>
    <profile>
      <id>deploy-child2</id>
      <activation>
        <activeByDefault>false</activeByDefault>
      </activation>
      <build>
        <plugins>
          <plugin>
            <groupId>org.apache.tomcat.maven</groupId>
            <artifactId>tomcat7-maven-plugin</artifactId>
            <configuration>
              <url>${urlTomcat}manager/text</url>
              <path>/${pathApp}</path>
            </configuration>
          </plugin>
        </plugins>
      </build>
    </profile>
  </profiles>

  <dependencies>
    <dependency>
      <groupId>my.groupID</groupId>
      <artifactId>child1</artifactId>
      <type>war</type>
    </dependency>
  </dependencies>

  <build>
    ...
  </build>
</project>

Here is the sample of the child3 (the plugin is declare)

    <?xml version="1.0"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <artifactId>parentProject</artifactId>
    <groupId>my.groupID</groupId>
    <version>1.0.0</version>
  </parent>

  <groupId>my.groupID</groupId>
  <artifactId>child3</artifactId>
  <packaging>war</packaging>

  <properties>
    <urlTomcat>http://localhost:8080/</urlTomcat>
    <pathApp>child3</pathApp>
  </properties>

  <profiles>
    <profile>
      <id>deploy-child3</id>
      <activation>
        <activeByDefault>false</activeByDefault>
      </activation>
      <build>
        <plugins>
          <plugin>
            <groupId>org.apache.tomcat.maven</groupId>
            <artifactId>tomcat7-maven-plugin</artifactId>
            <configuration>
              <url>${urlTomcat}manager/text</url>
              <path>/${pathApp}</path>
            </configuration>
          </plugin>
        </plugins>
      </build>
    </profile>
  </profiles>

  <dependencies>
    <dependency>
      <groupId>my.groupID</groupId>
      <artifactId>child1</artifactId>
      <type>war</type>
    </dependency>
  </dependencies>

  <build>
    ...
  </build>
</project>

When I ran this command :

mvn tomcat7:deploy -Pdeploy-child2 or mvn tomcat7:deploy -Pdeploy-child3

My problem is that maven try to deploy the child1 project and I don't want it. I expect that the child1 will be build but not deploy because it doesn't declare the plugin.

Answer 1

This plugin even though mentioned in pluginManagement, will be inherited by child modules even if it is not included in child poms. To know why they are included, please check this link . The deploy goal is a lifecycle goal for war packages.

In parent pom, include following, then it'll not be included in the childs in which it is not defined.

    <configuration>
          <skip>true</skip>
   </configuration>