A snippet of my pom looks something like:
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.8</version>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>native-maven-plugin</artifactId>
<version>1.0-alpha-7</version>
</plugin>
<plugin>
<groupId>org.codehaus.gmaven</groupId>
<artifactId>gmaven-plugin</artifactId>
<version>1.5</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<configuration>
<updateDependencies>true</updateDependencies>
<generateBackupPoms>false</generateBackupPoms>
</configuration>
</plugin>
</plugins>
</build>
Can anybody explain the difference between the <plugins> listing under project->build->pluginManagement and project->build>?
From the POM documentation at http://maven.apache.org/pom.html
pluginManagement: is an element that is seen along side plugins. Plugin Management contains plugin elements in much the same way,
except that rather than configuring plugin information for this
particular project build, it is intended to configure project builds
that inherit from this one. However, this only configures plugins that
are actually referenced within the plugins element in the children.
The children have every right to override pluginManagement
definitions.
Related
In my Maven project when I change the packaging type from 'jar' to 'bundle' most of my plugins (compiler, deploy, install, resources, surefire) lose their versions. Why is this?
My pom.xml is below:
<groupId>org.wso2.carbon</groupId>
<artifactId>org.wso2.carbon.ui_4.4.35_patch</artifactId>
<version>1.0.0</version>
<packaging>bundle</packaging>
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>4.2.1</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
<Bundle-Name>${project.artifactId}</Bundle-Name>
<Export-Package>web.admin.*</Export-Package>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
There are two possible approaches. The one I use for my own projects is to keep the bundle packaging and add the maven plugin versions to a pluginManagement section in the pom.xml. For example:
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
<!-- Add you current 'plugins' section here. -->
</build>
In addition to the version, you can also add configuration to each plugin. If your project has a parent pom, it would be natural to add the pluginManagement section there instead of in your bundle module.
Alternatively, as suggested by #khmarbaise, you can use jar packaging and just use the maven-bundle-plugin to generate the manifest. That approach is described in the plugin documentation page.
I am trying to publish an spring mvc application in Red5Pro server. (tomcat).
I use Maven as build tool, but it seems to not work properly, because the
compiled classes are not found in WEB-INF/classes. This is my project structure:
The project is found in RED5ProHome/webapps, but without the compiled classes. (only xml, jsp and html).
This is my pom.xml
<modelVersion>4.0.0</modelVersion>
<groupId>org.red5.example</groupId>
<artifactId>springmvc</artifactId>
<packaging>war</packaging>
<version>1.0</version>
<build>
<finalName>springmvc</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
</plugin>
<plugin>
<artifactId>maven-source-plugin</artifactId>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<packagingExcludes>WEB-INF/lib/*.jar</packagingExcludes>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
<dependencies>
// all dependencies needed
</dependencies>
Another point is that I export my project as war, manually, it works.
Do you have any idea how can I solve this issue?
Thank you.
I have a parent pom looking like this:
...
<module>mod1</module>
...
<build>
<plugins>
<plugin>
...
<phase>process-resources</phase>
...
</plugin>
</plugin>
</build>
with two plugins,maven-resources-plugin and maven-antrun-plugin.
I want those plugins executed only within the parent pom.
But my problem is that they are executed in my module too.
Even so I'm not using pluginManagment tag.
I'm lost, i don't understand... :)
Set inherited to false:
<build>
<plugins>
<plugin>
...
<phase>process-resources</phase>
<inherited>false</inherited>
...
</plugin>
</plugin>
</build>
See also: https://maven.apache.org/guides/mini/guide-configuring-plugins.html#Using_the_inherited_Tag_In_Build_Plugins
I am specifying:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.plugin.version}</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<outputDirectory>C:\apache-tomcat-7.0.42\webapps</outputDirectory>
</configuration>
</plugin>
.
.
.
However, even though I do not specify anything in the respective children pom.xml, the war file is still being moved to that output directory.
As far as I know, pluginManagement is only there for reference from the children pom right?
Thank you for your help
By default Maven will invoke the maven-war-plugin war:war goal as part of the package phase if you specify <packaging>war</packaging> in your pom.xml
Since you have a <pluginManagement> stanza for maven-war-plugin specifying a custom <outputDirectory> in your parent pom.xml your child pom.xml will use this property when you run the package phase.
http://maven.apache.org/plugins/maven-war-plugin/usage.html
I'm trying to write a parent pom, and I have a plugin defined, but I need to change the config for all inherited instances. So, I can put some configuration in the <pluginManagement> definition, and I can override it in the <plugin>, but how do I get the children to default back to the <pluginManagement> version?
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.9.1</version>
<executions...>
<configuration>
<configLocation>
(used by all children)
</configLocation>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<configuration>
<configLocation>
(unique to the parent)
</configLocation>
</configuration>
</plugin>
</plugins>
<build>
So, what happens is the children continue to show the parent's config.
Ok, I think I have it. The answer, in my case, relates to what you specified - I did need the tag. However the solution was in the tag; by binding it to a non-phase, it does execute. This I knew. What I discovered is that the had to match in order for it to override. Thus, the config never gets parsed and doesn't matter.
<build>
<pluginManagement>
<plugins>
<plugin>
<!-- Main declaration of the plugin -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.9.1</version>
<executions>
<execution>
<!--This must be named-->
<id>checkstyle</id>
<phase>compile</phase>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
<configuration...>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<!-- Uses the default config -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<inherited>false</inherited>
<executions>
<execution>
<!--This matches and thus overrides-->
<id>checkstyle</id>
<phase>none</phase>
</execution>
</executions>
</plugin>
</plugins>
</build>
You can explicitly specify in your parent pom that the plugin should not be inherited:
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.9.1</version>
<executions...>
<configuration>
<configLocation>
(used by all children)
</configLocation>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<inherited>false</inherited> <!-- Add this line -->
<configuration>
<configLocation>
(unique to the parent)
</configLocation>
</configuration>
</plugin>
</plugins>
<build>
And in your child pom, you need to specify the plugin (the config will then come from the <pluginManagement> parent element.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
</plugin>
</plugins>
<build>