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Adding a Module to JBoss EAP

The JBoss Enterprise Application Platform provides extensive support for deploying and managing Java-based applications. Part of this support includes the ability to add and create modules, which in turn opens up additional functionality for your application — such as allowing the option to connect to a MySQL database, as in this lab.

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Path Info

Clock icon Beginner
Clock icon 15m
Clock icon Jan 24, 2020

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Table of Contents

  1. Challenge

    Download Module Drivers

    1. Download the MySQL JDBC connector:

    2. Extract the contents:

      tar xf mysql-connector-java-8.0.18.tar.gz
  2. Challenge

    Create Module

    1. Move into the modules directory:

      cd /opt/jboss-eap/modules
    2. Create com directory to store local, non-system modules:

      sudo mkdir com
    3. We can now create the mysql module directory underneath this; each module stores all required configurations and JAR files in a required main directory, so create this, too:

      sudo mkdir -p com/mysql/main
    4. Move the downloaded .jar file into this new directory:

      sudo mv ~/mysql-connector-java-8.0.18/mysql-connector-java-8.0.18.jar com/mysql/main/
  3. Challenge

    Create .xml File

    Within the main directory for the mysql module, create a module.xml file to configure the MySQL JDBC diver. Note that the name of the module must mimic the directory structure — in this case, it should be com.mysql:

    sudo vim com/mysql/main/module.xml
    <?xml version="1.0" ?>
    <module xmlns="urn:jboss:module:1.1" name="com.mysql">
        <resource-root path="mysql-connector-java-8.0.18.jar"/>
        <module name="javax.api"/>
        <module name="javax.transaction.api"/>

    Note that the dependencies provided are system modules, found in /opt/jboss-eap/modules/system/layers/base/javax/.

  4. Challenge

    Add as a Global Module

    1. Open the management CLI:

      cd ..
      sudo ./bin/
    2. Connect:

    3. Add the module to global modules, under the EE subsystem:

    4. We can check that the module has been added by logging in to the Management Console at PUBLICIP:9990 using the username admin and the password pinehead. Select Start, under Configuration, then select Subsystems from the menu. View the EE subsystem. Select Global Modules -- the com.mysql module should be listed.

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