Hello, I'm using the maven-flatten plugin with success in a project at the moment, but have stumbled upon something with Maven 3.2.2.
Given the following pom.xml file, the resultant output is observed in Maven 3.1.0 and 3.2.2: pom.xml: <?xml version="1.0" encoding="UTF-8"?> <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>mygroup</groupId> <artifactId>FlattenPluginTest</artifactId> <version>DEV-SNAPSHOT</version> <packaging>pom</packaging> <build> <plugins> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>flatten-maven-plugin</artifactId> <!--<version>1.0.0</version>--> <configuration> </configuration> <executions> <!-- enable flattening --> <execution> <id>flatten</id> <phase>process-resources</phase> <goals> <goal>flatten</goal> </goals> </execution> <!-- ensure proper cleanup --> <execution> <id>flatten.clean</id> <phase>clean</phase> <goals> <goal>clean</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project> Maven 3.1.0: [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for mygroup:FlattenPluginTest:pom:DEV-SNAPSHOT [WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:flatten-maven-plugin is missing. @ line 14, column 21 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING] [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building FlattenPluginTest DEV-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ FlattenPluginTest --- [INFO] [INFO] --- flatten-maven-plugin:1.0.0-beta-2:clean (flatten.clean) @ FlattenPluginTest --- [INFO] [INFO] --- flatten-maven-plugin:1.0.0-beta-2:flatten (flatten) @ FlattenPluginTest --- [INFO] Generating flattened POM of project mygroup:FlattenPluginTest:pom:DEV-SNAPSHOT... [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ FlattenPluginTest --- [INFO] Installing c:\Users\tmit\IdeaProjects\FlattenPluginTest\pom.xml to C:\Users\tmit\.m2\repository\mygroup\FlattenPluginTest\DEV-SNAPSHOT\FlattenPluginTest-DEV-SNAPSHOT.pom [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.646s [INFO] Finished at: Wed Jul 30 11:09:36 EDT 2014 [INFO] Final Memory: 9M/384M [INFO] ------------------------------------------------------------------------ Maven 3.2.2: [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for mygroup:FlattenPluginTest:pom:DEV-SNAPSHOT [WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:flatten-maven-plugin is missing. @ line 14, column 21 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING] [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building FlattenPluginTest DEV-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ FlattenPluginTest --- [INFO] [INFO] --- flatten-maven-plugin:1.0.0-beta-2:clean (flatten.clean) @ FlattenPluginTest --- [INFO] Deleting c:\Users\tmit\IdeaProjects\FlattenPluginTest\.flattened-pom.xml [INFO] [INFO] --- flatten-maven-plugin:1.0.0-beta-2:flatten (flatten) @ FlattenPluginTest --- [INFO] Generating flattened POM of project mygroup:FlattenPluginTest:pom:DEV-SNAPSHOT... [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.498 s [INFO] Finished at: 2014-07-30T11:09:42-04:00 [INFO] Final Memory: 8M/384M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.codehaus.mojo:flatten-maven-plugin:1.0.0-beta-2:flatten (flatten) on project FlattenPluginTest: Execution flatten of goal org.codehaus.mojo:flatten-maven-plugin:1.0.0-beta-2:f [ERROR] ----------------------------------------------------- [ERROR] realm = plugin>org.codehaus.mojo:flatten-maven-plugin:1.0.0-beta-2 [ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy [ERROR] urls[0] = file:/C:/Users/tmit/.m2/repository/org/codehaus/mojo/flatten-maven-plugin/1.0.0-beta-2/flatten-maven-plugin-1.0.0-beta-2.jar [ERROR] urls[1] = file:/C:/Users/tmit/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.14/plexus-interpolation-1.14.jar [ERROR] urls[2] = file:/C:/Users/tmit/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.5.5/plexus-component-annotations-1.5.5.jar [ERROR] urls[3] = file:/C:/Users/tmit/.m2/repository/org/sonatype/aether/aether-util/1.7/aether-util-1.7.jar [ERROR] urls[4] = file:/C:/Users/tmit/.m2/repository/org/sonatype/sisu/sisu-inject-bean/1.4.2/sisu-inject-bean-1.4.2.jar [ERROR] urls[5] = file:/C:/Users/tmit/.m2/repository/org/sonatype/sisu/sisu-guice/2.1.7/sisu-guice-2.1.7-noaop.jar [ERROR] urls[6] = file:/C:/Users/tmit/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar [ERROR] urls[7] = file:/C:/Users/tmit/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar [ERROR] urls[8] = file:/C:/Users/tmit/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.17/plexus-utils-3.0.17.jar [ERROR] Number of foreign imports: 1 [ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]] [ERROR] [ERROR] ----------------------------------------------------- [ERROR] -> [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/PluginContainerException Thanks, Tom Mitchell
