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Ubuntu + IntelliJ + Maven + Jetty + JRebel

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Table of contents

  1. Aim
    1. Why?
  2. Java
    1. Install Java
    2. Configure Java
  3. Maven
    1. Install Maven
    2. Configure Maven
      1. Settings.xml
    3. Run Maven
  4. JRebel
    1. Jrebel License
    2. Download Jrebel
    3. Install Jrebel
    4. Configure Jrebel
  5. IntelliJ IDEA
    1. Intellij License
    2. Download IntelliJ
    3. Install IntelliJ
      1. Add IntelliJ to the menu
    4. Configure IntelliJ
      1. Configure Maven in IntelliJ
      2. Install & configure
        JRebel plugin in IntelliJ
  6. Your project
    1. Import project into IntelliJ
  7. Jetty
    1. Run Jetty in IntelliJ
  8. Extensions
    1. Compile on Save
  9. References
  10. Feedback
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1 Aim

  1. Main aim is to use IntelliJ IDEA in Ubuntu for Java based web applications.
  2. With Maven and Jetty through its plugin as the server
  3. And speeding up development with JRebel

1.a Why?

The combination of Ubuntu, IntelliJ, Maven, Jetty and JRebel enables really quick web app development in Java.

I have used Eclipse, and still do at times for certain projects at work. I still use Netbeans at home as I just can't make my mind up.

But everyone raves about IntelliJ so I thought I'd give it a proper go this time, and for it to be worth my time, I need Maven, Jetty and JRebel to work seamlessly.



2 Java

2.a Install Java

sudo aptitude install sun-java6-jdk

2.b Configure Java

In case of other Java JDK are installed, choose Sun's flavour

sudo update-alternatives --config java sudo update-alternatives --config javac

Environment variables

sudo vi /etc/profile.d/java.sh export JAVA_HOME=/usr/lib/jvm/java-6-sun
export JDK_HOME=/usr/lib/jvm/java-6-sun sudo chmod +x /etc/profile.d/java.sh

3 Maven

3.a Install Maven

Your choice: either install via Ubuntu package repository or download the full Maven directly.
Most people would recommend downloading it directly as no unwanted garbage (Ant,gjc..) gets attached...
However I run the .deb version so this is what I will document here. (You may try and restrict the installation of optional packages...)

sudo aptitude install maven2

3.b Configure Maven

Some programs depend on different environment variables for Maven.
Also the default memory assignment is very low so you may optionally add it.

sudo vi /etc/profile.d/maven.sh export MAVEN_HOME=/usr/share/maven2
export M2_HOME=/usr/share/maven2
#export MAVEN_OPTS=-Xms128M -Xmx512M -XX:MaxPermSize=256m
#export MAVEN_OPTS=-noverify -javaagent:$JREBEL_HOME/jrebel.jar
 sudo chmod +x /etc/profile.d/maven.sh

3.b.i Settings.xml

Depending on your project you may need to configure the default maven settings, such as any mirrors you use, passwords, other repositories, profiles etc.
But that is out of scope of this document.

mkdir ~/.m2; vi ~/.m2/settings.xml

3.c Run Maven

Because of maven dependency characteristics it is wise to do an initial a simple clean & build of your application do download all the dependencies.

This may take a while....

But you only have to do it once (ish..)

cd /path/to/your/project,
mvn clean;
# Wait a little while....
mvn install;
# Wait a longer while....
mvn jetty:run;
# Wait a longish while....

When ready kill Jetty with ^C (As in ctrl+c)

Remember from now on you should mostly do append -o parameter to speed up builds



4 JRebel

4.a JRebel License

You need to obtain a license to run JRebel.
I have a free Open Source one, and are in the process of getting work to pay for one as well. You can use the trial version for 30 days. (Its worth it)

4.b Download JRebel

Download the generic JAR installer

4.c Install JRebel

cd /tmp; unzip ~/Downloads/jrebel-*-setup.zip;
sudo -jar jrebel/jrebel-setup.zip

I tend to choose /opt/ZeroTurnaround/JRebel as my install path, but the default it /usr/local/ZeroTurnaround/Jrebel.

4.d Configure JRebel

If the installer doesn't trigger the configuration, or you want to reconfigure:

sudo /opt/ZeroTurnaround/JRebel/bin/jrebel-config.sh
  1. Choose "IntelliJ 8.x or later" as IDE
  2. Tick "I use maven to build my application"
  3. Tick "I run the server from my IDE"
  4. Click Next and read how JRebel integrates with IntelliJ.
  5. Click Next and read how JRebel integrates with Maven, you may want to update your projects Pom file.
  6. Click Next and read how the servers inside IDEs are affected.
  7. A usefull tip is the ctrl+s remaped keyboard shortcut
  8. In the top right click on "Configure manually"
  9. In "Java version" choose "Java 5 or later"
  10. In "Operating System" choose "Unix-like (Linux, Mac OS C, etc)"
  11. In "Server" choose "Maven Jetty Plugin"
  12. Read how you should update your projects pom.xml by setting the scanIntervalseconds to 0
  13. Add the jrebel line to maven opts sudo vi /etc/profile.d/maven.sh And then uncomment or add the MAVEN_OPTS line: export MAVEN_OPTS="-noverify -javaagent:/opt/ZeroTurnaround/JRebel/jrebel.jar $MAVEN_OPTS"
  14. Click Next
  15. Tick "Log to file"
  16. Set "Custom log file location" to "/var/log/jrebel/jrebel.log". Create the jrebel log folder: sudo mkdir /var/log/jrebel;
    sudo chown jrebel:jrebel /var/log/jrebel
  17. Pick your plugins..
  18. Click Next and Finish
sudo vi /etc/profile.d/jrebel.sh export JREBEL_HOME=/opt/ZeroTurnaround/JRebel sudo chmod +x /etc/profile.d/jrebel.sh

5 IntelliJ IDEA

5.a IntelliJ License

Decide which version you want. I will assume a trial of the ultimate edition.

5.b Download IntelliJ

Select your IntelliJ download such as this one.

5.c Install IntelliJ

cd /tmp;
tar xzf ~/Downloads/ideaIU-9.0.2.tar.gz;
sudo chown -R root:root idea-IU-95.96;
sudo mv idea-IU-95.96 /opt/;

5.c.i Add IntelliJ to the menu

  1. Select System/Preferences/Main Menu
  2. In the left column, select Programming
  3. Click New item
  4. Enter "IntelliJ IDEA" as the Name
  5. Enter /opt/idea-UI-95.96/bin/idea.sh as the Command
  6. Click on the icon on the left to choose icon.
  7. Enter /opt/idea-UI-95.96/bin/ in the Location field
  8. Choose idea128.png as the icon and click on Open
  9. Then OK, then Close

5.d Configure IntelliJ

On first launch IntelliJ will ask you a series of questions regarding plugins etc.

Choose maven plugin amongst others.

5.d.i Configure Maven in IntelliJ

Open settings via File/Settings/maven and enter Maven home directory as /usr/share/maven2

5.d.ii Install & configure JRebel plugin in IntelliJ

  1. Open the plugins section via File/Settings/Plugins
  2. Choose the Available tab
  3. Search for JRebel
  4. Right click on JRebel Plugin and choose Download and install
  5. Once installed go to File/Settings/JRebel
  6. Enter /opt/ZeroTurnaround/JRebel/jrebel.jar in JRebel location

6 Your project

6.a Import project into IntelliJ

  1. Find your project via File/New project
  2. Choose Import project from External model
  3. Select Maven
  4. Find your project root
  5. Check Environment settings still refer to /usr/share/maven2 as Maven location
  6. Wait awhile for IntelliJ to load the new project information


7 Jetty

7.a Run Jetty in IntelliJ

  1. In IntelliJ, click to open Maven Projects on the right hand side
  2. Expand
    1. your project
    2. Plugins
    3. Jetty
  3. Right clik on jetty:run
  4. I choose the top option Run Maven build, which is the same as if I double clicked on jetty:run.
    ( Others say you should choose Run with JRebel, but the top option works for me, and the JRebel action actually gives me an error that maven is not configured...)


8 Extension

8.a Compile on save

IntelliJ does not support Compile-on-save / Auto-build.
This feature is essential to get the best time saving from using JRebel.

So you will have to manually enter ctrl++shift+F9 to compile your file, or just ctrl+F9 to build your whole project.

A decent work around is to map ctrl+s as the build command.

Another is to install a plugin called Eclipse Mode, which auto build like eclipse.
(I have not been able to get this to work as expected)



9 References



9 Feedback

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