Weird issue running maven site (problems were encountered while processing the POMs)

Question

I'm trying to run mvn site but I keep getting this error message every time. I've tried googling, but have not found any solutions. I'm currently on a Windows machine running maven from git bash.

[WARNING] Unable to create Maven project for org.crashub:crash.shell:pom:1.3.1 from repository.
org.apache.maven.project.InvalidProjectModelException: Some problems were encountered while processing the POMs:
[ERROR] 'dependencies.dependency.systemPath' for com.sun:tools:jar must specify an absolute path but is /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/../Classes/classes.jar @ line 98, column 19

My pom-file

<?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>com.example</groupId>
    <artifactId>primecheck</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.3.RELEASE</version>
    </parent>

    <packaging>war</packaging>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-math3</artifactId>
            <version>3.4.1</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-project-info-reports-plugin</artifactId>
                <version>2.8</version>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-site-plugin</artifactId>
                <version>3.4</version>
                <dependencies>
                    <dependency>
                        <groupId>lt.velykis.maven.skins</groupId>
                        <artifactId>reflow-velocity-tools</artifactId>
                        <version>1.1.1</version>
                    </dependency>
                    <!-- Reflow skin requires Velocity >= 1.7  -->
                    <dependency>
                        <groupId>org.apache.velocity</groupId>
                        <artifactId>velocity</artifactId>
                        <version>1.7</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-releases</id>
            <url>https://repo.spring.io/libs-release</url>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-releases</id>
            <url>https://repo.spring.io/libs-release</url>
        </pluginRepository>
        <pluginRepository>
            <id>central</id>
            <name>Maven Plugin Repository</name>
            <url>http://repo1.maven.org/maven2</url>
        </pluginRepository>
    </pluginRepositories>

</project>

Running mvn dependency:tree

    [INFO] --- maven-dependency-plugin:2.9:tree (default-cli) @ primecheck ---
    [INFO] com.tomasruud:primecheck:war:1.0.0-SNAPSHOT
    [INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.2.3.RELEASE:compile
    [INFO] |  +- org.springframework.boot:spring-boot-starter:jar:1.2.3.RELEASE:compile
    [INFO] |  |  +- org.springframework.boot:spring-boot:jar:1.2.3.RELEASE:compile
    [INFO] |  |  +- org.springframework.boot:spring-boot-autoconfigure:jar:1.2.3.RELEASE:compile
    [INFO] |  |  \- org.yaml:snakeyaml:jar:1.14:compile
    [INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.4.5:compile
    [INFO] |  |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.4.5:compile
    [INFO] |  |  \- com.fasterxml.jackson.core:jackson-core:jar:2.4.5:compile
    [INFO] |  +- org.hibernate:hibernate-validator:jar:5.1.3.Final:compile
    [INFO] |  |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
    [INFO] |  |  +- org.jboss.logging:jboss-logging:jar:3.1.3.GA:compile
    [INFO] |  |  \- com.fasterxml:classmate:jar:1.0.0:compile
    [INFO] |  +- org.springframework:spring-core:jar:4.1.6.RELEASE:compile
    [INFO] |  +- org.springframework:spring-web:jar:4.1.6.RELEASE:compile
    [INFO] |  |  +- org.springframework:spring-aop:jar:4.1.6.RELEASE:compile
    [INFO] |  |  |  \- aopalliance:aopalliance:jar:1.0:compile
    [INFO] |  |  +- org.springframework:spring-beans:jar:4.1.6.RELEASE:compile
    [INFO] |  |  \- org.springframework:spring-context:jar:4.1.6.RELEASE:compile
    [INFO] |  \- org.springframework:spring-webmvc:jar:4.1.6.RELEASE:compile
    [INFO] |     \- org.springframework:spring-expression:jar:4.1.6.RELEASE:compile
    [INFO] +- org.springframework.boot:spring-boot-starter-log4j2:jar:1.2.3.RELEASE:compile
    [INFO] |  +- org.slf4j:jcl-over-slf4j:jar:1.7.11:compile
    [INFO] |  |  \- org.slf4j:slf4j-api:jar:1.7.11:compile
    [INFO] |  +- org.slf4j:jul-to-slf4j:jar:1.7.11:compile
    [INFO] |  +- org.apache.logging.log4j:log4j-slf4j-impl:jar:2.1:compile
    [INFO] |  +- org.apache.logging.log4j:log4j-api:jar:2.1:compile
    [INFO] |  \- org.apache.logging.log4j:log4j-core:jar:2.1:compile
    [INFO] +- org.springframework.boot:spring-boot-starter-test:jar:1.2.3.RELEASE:compile
    [INFO] |  +- junit:junit:jar:4.12:compile
    [INFO] |  +- org.mockito:mockito-core:jar:1.10.19:compile
    [INFO] |  |  \- org.objenesis:objenesis:jar:2.1:runtime
    [INFO] |  +- org.hamcrest:hamcrest-core:jar:1.3:compile
    [INFO] |  +- org.hamcrest:hamcrest-library:jar:1.3:compile
    [INFO] |  \- org.springframework:spring-test:jar:4.1.6.RELEASE:compile
    [INFO] +- org.apache.commons:commons-math3:jar:3.4.1:compile
    [INFO] \- org.springframework.boot:spring-boot-starter-tomcat:jar:1.2.3.RELEASE:provided
    [INFO]    +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.0.20:provided
    [INFO]    +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.0.20:provided
    [INFO]    +- org.apache.tomcat.embed:tomcat-embed-logging-juli:jar:8.0.20:provided
    [INFO]    \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.0.20:provided

Side note: I recomment not to specify repositories in your POM files but to use a Maven Repository Manager such as Nexus and to configure the settings file accordingly: stackoverflow.com/questions/29821920/… — Puce
– Puce, Commented Apr 23, 2015 at 11:33
Please provide the output (in the git bash) for java -version, javac -version, echo $JAVA_HOME and echo $M2_HOME — Puce
– Puce, Commented Apr 23, 2015 at 11:38
@Puce java -version shows java version "1.8.0_25" Java(TM) SE Runtime Environment (build 1.8.0_25-b18) Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode), javac -version shows javac 1.8.0_25, echo $JAVA_HOME shows C:\Program Files\Java\jdk1.8.0_25 and echo $M2_HOME shows C:\dev\apache-maven-3.3.1 — Tomas
– Tomas, Commented Apr 23, 2015 at 11:44
That looks fine, I think. What Maven command did you execute? Also please provide the output (in the question not as a comment) of mvn dependency:tree as it's not clear to me where crash.shell and the system dependency are coming from and if they are related. — Puce
– Puce, Commented Apr 23, 2015 at 11:50

Puce · Accepted Answer · 2015-04-23 12:44:16Z

0

I have found these 2 related issues:

https://jira.exoplatform.org/browse/CRASH-225

https://jira.codehaus.org/browse/MSHADE-185

So the cause seems to be in the Maven Shade Plugin: the CRaSH POM seems to use the Shade Plugin and then has the wrong, hardcoded systemPath.

According to http://www.crashub.org/:

CRaSH is officially embedded as Spring Boot remote shell.

So org.crashub:crash.shell:pom:1.3.1 seems to be related to Spring Boot, but I don't know what is meant by the warning: "Unable to create Maven project for [...]"

EDIT

Try to add the following dependency to your POM:

<dependency>
    <groupId>com.sun</groupId>
    <artifactId>tools</artifactId>
    <version>1.8</version>
    <scope>system</scope>
    <systemPath>${java.home}/../lib/tools.jar</systemPath>
    <optional>true</optional>
</dependency>

edited Apr 23, 2015 at 12:44

answered Apr 23, 2015 at 12:22

Puce

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4 Comments

Tomas Over a year ago

From what I can see, is spring-boot-starter-parent using Shade pom.xml

Puce Over a year ago

@Tom it's the CRaSH POM which uses the Shade Plugin and has the wrong, hardcoded systemPath, I think: repo1.maven.org/maven2/org/crashub/crash.shell/1.3.1/…

Puce Over a year ago

@Tomas See my edited answer. Not sure it works, though.

Puce Over a year ago

@Tomas I'm not sure if there is a work around. I suggest to join the discussions at the mentioned issues.

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