Maven doesn't install everything from the pom file resulting in “Missing Required Library” x 124

Question

My pom.xml looks as follows:

<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>
<parent>
    <groupId>be.ugent.sop.p404</groupId>
    <artifactId>P404</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>P404EJB</artifactId>
<name>P404EJB</name>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-ejb-plugin</artifactId>
            <configuration>
            <ejbVersion>3.1</ejbVersion>
            </configuration>
        </plugin>
    </plugins>
</build>

<dependencies>
    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-java</artifactId>
        <version>2.40.0</version>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.29</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>org.eclipse.persistence.jpa</artifactId>
        <version>2.5.2-M1</version>
    </dependency>
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
        <scope>provided</scope>
    </dependency>


    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
    </dependency>
    <dependency>
        <groupId>org.databene</groupId>
        <artifactId>contiperf</artifactId>
        <version>2.2.0</version>
    </dependency>

    <dependency>

        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.6</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.6</version>
    </dependency>



    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
    </dependency>

    <dependency>
        <groupId>org.databene</groupId>
        <artifactId>contiperf</artifactId>
        <version>2.2.0</version>
    </dependency>

    <dependency>
        <groupId>org.apache.geronimo.specs</groupId>
        <artifactId>geronimo-j2ee-deployment_1.1_spec</artifactId>
        <version>1.1</version>
    </dependency>

    <dependency>
        <groupId>com.googlecode.json-simple</groupId>
        <artifactId>json-simple</artifactId>
        <version>1.1.1</version>
    </dependency>

    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.4</version>
    </dependency>

</dependencies>

<packaging>ejb</packaging>

As one of the examples of the problems I am receiving:

Description Resource    Path    Location    Type
Project 'P404EJB' is missing required library: '/home/zeesteen/.m2/repository/com/googlecode/json-simple/json-simple/1.1.1/json-simple-1.1.1.jar'   P404EJB     Build path  Build Path Problem

I assumed that after using the following command:

mvn clean install eclipse:eclipse

Maven was supposed to fetch libraries that are in the pom and not present on my machine yet? (The folders, for example "com" don't exist in the .m2/repository folder)

I have tried multiple solutions myself such as - Removing the Maven nature, clean installing again, converting to a maven project - Doing variations on the clean command - Right clicking on the project and doing Maven > update Project - Cleaning the project through eclipse

I got 124 Java Build Path Problems like the one mentioned above.

Answer 1

I found the mistake..

Maven didn't give errors because there was nothing wrong with my maven repo apparently. Eclipse had changed the location of my settings.xml maven file to a "nonexistent" location.. Resulting in all the problems. I manually changed it back and all problems are solved.

In Eclipse I did: Window > Preferences > Maven > User Settings: Field User Settings was wrong (eclipse changed it..) put it back to where I first made the settings, applied, cleaned the project and everything was fixed!

Answer 2

Please make sure that you have added Maven Dependencies under Libraries in Java Build Path.

Note : You can check the properties by Right-clicking the project and click Properties. If it is NOT added, you can click Add Library and select Maven Managed dependencies and finish