Hi, > I am testing the Maven dependecies. In a parent-child project arhitecture I > am using many frameworks > (log4j, xdoclet, etc) and these are installed in may local repository and I > am able to use them. > > I created and installed a POM, called "x-deps", to manage the dependecies:
*snip* > > <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>sk</groupId> > <artifactId>x-deps</artifactId> > <version>0.0.1-SNAPSHOT</version> > <packaging>pom</packaging> > <dependencyManagement> > <dependencies> > <dependency> > <groupId>log4j</groupId> > <artifactId>log4j</artifactId> > <version>1.2.8</version> > </dependency> > <dependency> > <groupId>xdoclet</groupId> > <artifactId>xdoclet</artifactId> > <version>2.0.3</version> > </dependency> > </dependencies> > </dependencyManagement> > </project> > > In a parent POM, called "a", I set the dependecyManager for "x-deps": > > <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>sk</groupId> > <artifactId>a</artifactId> > <version>0.0.1-SNAPSHOT</version> > <packaging>pom</packaging> > <modules> > <module>../b</module> > </modules> > <dependencyManagement> > <dependencies> > <dependency> > <groupId>sk</groupId> > <artifactId>x-deps</artifactId> > <version>0.0.1-SNAPSHOT</version> > <type>pom</type> > </dependency> > </dependencies> > </dependencyManagement> > </project> > > In its child POM, called "b", I would like to add the dependency only for > log4j: > > <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> > <artifactId>b</artifactId> > <parent> > <groupId>sk</groupId> > <artifactId>a</artifactId> > <version>0.0.1-SNAPSHOT</version> > </parent> > <dependencies> > <dependency> > <groupId>log4j</groupId> > <artifactId>log4j</artifactId> > </dependency> > </dependencies> > </project> > > When I want to validate my POM "a" I get this error: > > error: 'dependencies.dependency.version' for log4j:logj:jar is missing > > Can somebody help me? Quite easy: In the referenced parent sk:a:0.0.1-SNAPSHOT you only manage a dependency for sk:x-deps:0.0.1-SNAPSHOT (which isn't used in b, btw), but not for the real dependencies you're using in your project b... To use them, move the dependency management section from x-deps to your project a. That should do the trick. HTH Thorsten
