How to configure Jrebel with Hybris | Use of Jrebel with Hybris

Hello Guys ,

Before go to configuration of JRebel with Hybris we need to understand about use of JRebel and Purpose of use of JRebel with Hybris.

So What is JRebel ?

JRebel is a JVM Java Agent that integrates with application servers, making classes reloadable with existing class loaders. Only changed classes are recompiled and instantly reloaded in the running application.

JRebel plugs into IDEs and build systems. Classes and static resources are loaded straight from the workspace.

Now How to Use JRebel in your Hybris project

So follow below steps to configure JRebel in your Hybris project

1.  Download JRebel from https://zeroturnaround.com/software/jrebel/download/

now unzip JRebel . Lets i have unzip in c:\jrebel

2.  Now create conf folder into c:\jrebel as below

3. Create jrebel.properties into conf folder

4. Now set environment variable  REBEL_HOME

5.  After finish all these setting open your Hybris's Local.properties file put below line into there

tomcat.javaoptions=-Xverify:none -javaagent:"C:/jrebel/jrebel.jar=de.hybris.tomcat.HybrisWebappClassLoader60"

tomcat.debugjavaoptions=-Xverify:none -javaagent:"C:/jrebel/jrebel.jar=de.hybris.tomcat.HybrisWebappClassLoader60" -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=n

6. Now you test whether JRebel successfully configure in your hybris

run hybrisserver.bat and check your console with below

7. Now after successful test create jrebel.xml file into your extension (extension that you want to monitor .class file ) as below . I have added into yacceleratorstorefront extension

in this file we have to give location of your .class file which create after build .

<?xml version="1.0" encoding="UTF-8"?>

<application generated-by="eclipse" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.zeroturnaround.com" xsi:schemaLocation="http://www.zeroturnaround.com http://update.zeroturnaround.com/jrebel/rebel-2_1.xsd">

       <classpath>

              <dir name="E:/HybrisDevelopment23032016/hybrisnew/hybris-commerce-suite-5.1.0.0/hybris/bin/ext-template/yacceleratorstorefront/web/webroot/WEB-INF/classes">

              </dir>

       </classpath>

</application>

8.  Now your JRebel is ready for use

So now how it works lets in login page of your storefront it call LoginPageController.java where i will put a console message

System.out.println("JRebel Test -- Java file change ");

and will test without restart server

now put below line in your controller

after you need to open another cmd and do only ant build

> ant build

after did if you see your hybris running server console you can see the change JRebel message of .class file as below

Now after hit your login url you can see your SOP message will print in console as below