Maven jette nullpointer exception

Bonne journée,

J'ai construit un projet avec maven. Tout au long de ce projet, j'ai conclu que la dépendance doit être ajouté pour un module en particulier. J'ai ajouté cette dépendance dans ce pom du fichier et quand j'ai essayé de reconstruire le projet à l'aide de maven, un pointeur null est renvoyée.

Pom fichiers avant:

(enfant pom:)

    <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.0-api</artifactId>
    </dependency>

</dependencies>

(principal pom:)

    <dependencyManagement>
    <dependencies>

        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>


        <dependency>
            <groupId>com.solveit.crm.core</groupId>
            <artifactId>crm-core</artifactId>
            <version>${project.version}</version>
        </dependency> //this dependency is for another module, it was
                        declared at the start of the project


    </dependencies>
</dependencyManagement>

Pom fichiers(ce qui cause nullpointer):

(enfant pom:)

<dependencies>

    <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.0-api</artifactId>
    </dependency>

    <dependency>
        <groupId>com.solveit.crm.data</groupId>
        <artifactId>crm-data</artifactId>
    </dependency>

</dependencies>

(principal pom:)

<dependencyManagement>
    <dependencies>

        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>


        <dependency>
            <groupId>com.solveit.crm.core</groupId>
            <artifactId>crm-core</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>com.solveit.crm.data</groupId>
            <artifactId>crm-data</artifactId>
            <version>${project.version}</version>
        </dependency>

    </dependencies>
</dependencyManagement>

Pourquoi ne maven jeter exception de pointeur null? Je suis confus maintenant.

MESSAGE D'ERREUR:

    [INFO] Scanning for projects...
[ERROR] Internal error: java.lang.NullPointerException -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerEx
ception
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:167)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:157)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
cher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
a:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
uncher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
356)
Caused by: java.lang.NullPointerException
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:270)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
... 11 more
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorE
xception

Dans eclipse, j'obtiens:

    [INFO] Scanning for projects...
[ERROR] The projects in the reactor contain a cyclic reference: Edge between 'Vertex{label='com.solveit.crm.data:crm-data:1'}' and 'Vertex{label='com.solveit.crm.core:crm-core:1'}' introduces to cycle in the graph com.solveit.crm.core:crm-core:1 --> com.solveit.crm.data:crm-data:1 --> com.solveit.crm.core:crm-core:1 -> [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/ProjectCycleException

Merci

OriginalL'auteur Bravo | 2014-04-15