Just trying to setup remote deployment of projects to Jboss AS 4.2.1 using Jrebel.
After enabling the JRebel for my project in eclipse along with the remoting feature, it asks for the deployed app's URL in the server. How do I get to know the URL of my project so that I can mention that in the JRebel remoting section?
I thought of looking it up in the JMX console but my project jar will reside in the lib folder of the EAR that's deployed to the server, so I wasn't able to locate it there. Can anyone help me out?
JRebel Remoting requires a HTTP facing component to function. It makes use of the HTTP protocol using the same port as the web container. This means zero conf (sort of) and no holes to poke into the firewall, but the downside is that it won't work for apps with no WAR module in them (yet :)).
I assume your app is a jar file inside an ear. All it needs is a war module in that ear. That war does not need to have rebel.xml nor rebel-remote.xml in it. Create the WAR if one does not exist.
The URL would be the address you have to enter in a web browser to access that webapp. For example http://example.org:8080/MyWar/
Also make sure you have the rebel.xml and rebel-remote.xml in the deployed library project (simply creating them in Eclipse is not enough, those two xml files have to end up in the server).
Also, you need to install and activate JRebel on the remote server machine, then start JBoss with the following JVM arguments: -javaagent:path/to/jrebel.jar -Drebel.remoting_plugin=true
where path/to/jrebel.jar points to the installed jrebel.jar file
More info: http://zeroturnaround.com/software/jrebel/remoting/
In your case the layout of the EAR could look like this:
- myapp.ear
- webapp.war
- someEJB.jar
- lib/
- yourApp.jar
- WEB-INF/classes/
- rebel.xml
- rebel-remote.xml
- someOtherLib.jar
--
Arnel
JRebel Remoting Tech Lead
Related
I have a Java EE web application written in Eclipse and deployed on WebLogic.
When I deploy it from Eclipse (as a virtual application) it works fine. When I try to create an EAR file and deploy it from the WebLogic console I get a ClassNotFoundException.
What could be the reason?
How can I create an EAR file that will match the structure of the virtual application so it will work?
Usually this means a dependent library is not being deployed. This tends to be where Eclipse has a dependency which it fulfills as part of the internal build. When building it yourself, work out which libraries you need, and which are part of your application, and which are part of WebLogic. For your own libraries (ie those in the lib folders, or those that SHOULD be in the lib folder) make sure they are on the classpath. For external libraries, ie those WebLogic fulfills, make sure you have the appropriate schema descriptors setup to tell weblogic which libraries it needs to deploy with your application (typically things like JSF).
If you want proper control over the build, take a look at things like Ant. You basically tell it via xml what is needed, put it together, and it generates the Ear/Jar file for you (the Ear file containing all the dependencies as well, and/or with your descriptors for weblogic built in libraries).
If you are planning many builds, I find Ant useful once setup (you can tie it in with other programs too, so it can push a build to your Source Control Server as a tag, build documentation, etc). Ant can be a pain though- you need build descriptors for each library you need to build, as well as the Ear file.
I'm using GWT 2.4 and have a ton of code already written. I understand the Jetty server that comes with the GWT plugin has very tight control over the jars that can be used in a project to mimic app engine as closely as possible. I need to deploy to tomcat 7. I modified my project in eclipse and "blessed" it as a dynamic web project so I can export...WAR and upload it to my QA and production tomcat.
I need help with getting the app to run (and debug) on an embedded tomcat (like an honest dynamic web project would). I already have tomcat setup in eclipse and I have my CAS server web app deployed to it.
I've ready tons of either old or confusing posts here and elsewhere. Basically, I'm looking for the same debugging environment I would get with the packaged Jetty server, but on my own tomcat configured with WTP in eclipse...so I can mimic my production environment (just like Jetty mimics app engine)
any help is appreciated.
It should probably a little bit easier, but it's possible. Here's how I do it:
1. Setting up the web server
Using the JavaEE edition of Eclipse, I set up the Tomcat 7.0 server adapter, and define an environment in Preferences > Server > Runtime Environments
File > New > Project... > Web/Dynamic Web Project
Select the target runtime I set up in the first step
Important: In Context Root, enter /
I create an HTML file and a Servlet, and then try running the setup using Debug As > Debug On Server
2. Adding the GWT code server
Project > Properties > Google > Web Toolkit > Use Google Web Toolkit
Important: I always need to change the order in the Java Build Path (Project > Properties > Java Build Path > Order and Export), see http://code.google.com/p/google-web-toolkit/issues/detail?id=4479 - gwt-dev.jar must be pretty much on top of the path.
Project > Properties > Google > Web Application: War directory = "WebContent", also check "Launch and deploy from this directory"
I create some sample GWT content (I create a sample GWT project, and copy most of it over)
I try to GWT compile the project. This shows me, if I got the build path order right - otherwise, the compiler fails early with "java.lang.NoSuchFieldError: warningThreshold".
Debug As > Web Application - just to create a debug configuration. Stop the debug. Edit the debug configuration (Run > Debug Configurations...), deselect "Run built-in server". Start the debug again.
Now, finally, I can debug both the server and the client part (I still need to click two Debug icons to start both!) I can manage the client side from the "Development Mode" view, and the server side from the "Servers" view. At the end of the day, it works great, and using the "Automatically publish when resources change" feature (Servers view > myServerName > Open > Publishing), sometimes even better than with the integrated Jetty.
At first thought, I don't really see why you would be facing a problem. Perhaps, the way Eclipse is laid out is too confusing and daunting.
On my Eclipse, I had been using the default jetty as the server during GWT debug. However, there were some problems which would not be caught by jetty when deployed on Tomcat or JBoss.
And when I added Tomcat or JBoss instances to Eclipse and added my app to those server instances, the debugging worked straight away. Are you missing one piece of vital, but simple info?
Let me presume that the following would fill in your missing link ...
Locating/adding your server instance:
On Package Explorer (or Project Explorer, either one) in Eclipse, you would see, besides your personal projects, a "servers" project. Under it is are configuration nodes listing all your Tomcat instances.
If you cannot see the "servers" node in Package Explorer, it probably is due to your working set filter. (And if you don't know what working sets are ... I guess you would need to beef up on your dexterity in Eclipse).
If you don't already have a Tomcat instance, you simply right click on the "servers" project to add a new server (Package Explorer -> New -> Server ...). You would be asked the location of your Tomcat home. And your desired port number of the server instance. Of course, you would have to ensure that the port number will not clash with the port used by any other inet operation on your box.
Configuring the port number a 2nd time
On the server instance node in Package Explorer, you would find the file you should edit to set the port number to match the one you specified when creating the new Tomcat instance. If you don't know which file to edit, you would need to read up on the Tomcat version you created to find out which file contains the port number config.
You need to config the port a 2nd time because the 1st time tells Eclipse where and at what port to expect the server instance to be running. The 2nd time is to configure the server instance itself.
Adding your app to the server
However, the nodes in "servers" project only allow you to configure your Tomcat instances. There is yet another view called the "server view" to further configure your tomcat instance. You need to enable Server view from Window->Show View->Server->Servers.
Right click on the server instance in the "Server View" to add your app.
Running debug off the Maven generated target.
There are times you wish to debug the war structure to figure out which jars are missing in the war. And incrementally remove jars from your war to figure out the jars that are already supplied by the server. Since JBoss supplies many of the jars already, you would have to figure out if your development jars are of the versions as those expected by JBoss.
You would create another Eclipse project in your workspace and make an Eclipse folder softlink in your 2nd project to point to the Maven generated target of your first project. And you specify target/{maven generated webapp directory} as the webapp directory of your 2nd project. What I mean by "maven generated webapp directory" is the unzipped intermediate directory generated by Maven (used by Maven to generate the zipped war file).
This is the cleanest way to debug production war if you could faithfully replicate the production tomcat/jboss server on your Eclipse development box.
If you prefer JBoss.
Somehow, JBoss config node is not listed in the "Servers" node in Package/Project Explorers. You would need to go to your JBoss installation directory to edit them.
Remote debugging.
If you wanted to debug the app on your production box, or on a server sitting on another box, you would have to start that tomcat instance under debug. You should read up on that. You have to specify the debug port.
Then in Eclipse, at Run->Debug Configuration->Remote Java Application, you specify the app and the debug port.
The first time you debug, Eclipse "may not know" where the source files are, especially if your app has multiple project dependencies. (Why can't Eclipse search the source files from my list of projects?) Anyway, you have to specify where to find your source files. And then when your debugging traverses into another project dependency, you would have to over-write the location of the source files.
So, voila! That is how I got my debugging working. I advise you to avoid remote debugging as much as possible unless you need to diagnose production problems. Unless you are doing remote debugging, do not attempt to deploy the war to local server, but simply depend on associating the project to the server instance.
Eclipse is too confusing
I know Eclipse is too confusing and you have to wade thro its features. You just have to bear with it. Eclipse menus & views are apparently optimized for plugin-programmer-centric not user-centric.
For example, why would I go to "help" to install new software? I used to expect that "Help->Install new software" to be an instructional manual to installing new software.
It beats (and annoys me) that the Eclipse team did not combine the operations together so that I could add apps to a server instance at Package Explorer. Why not? As a user I would expect to see only a single entry point to configuring my servers.
To alleviate the confusion, I like encouraging people to download and install Springsource's version of Eclipse (STS). It's the same Eclipse, except that STS has the essential parts installed and has a dashboard pointing to compatibly installable plugins. Tomcat is preinstalled as VMware tc Server. And the views are correctly config'd to show the server instances. And the correct workable Eclipse-Maven bridging plugin is pre-installed.
Eclipse Indigo
Version: Indigo Service Release 1
Build id: 20110916-0149
JBoss 6.1.Final
I have a server which i have configured with some support, but it has broken down.
Broken down means, even tough i;
- stop the server,
- clean and build projects in workspace,
- and clean the server and publish from scratch,
- and start the server again
it responds like it has yesterday's code. I made lots of change but server seems not to be aware of changes.
If you have an advise on this issue, please provide.
Thanks
Try autodeploying your .war or .ear file manually, not using the Eclipse JBoss connector (which sometimes breaks down and acts strangely). Just copy the file to the autodeploy dir (for JBoss 6 i believe this is /server/default/deploy), check the JBoss's logs/console to see that your file is currently deployed, then delete it from there, and again check that the JBoss console confirms succesfully undeploying that application.
Now, that Eclipse JBoss connector is convenient because it lets you quickly deploy, debug, etc (even tho it has it's bugs). You can however to several things to simulate it's behavious without actually using it:
simplest one: Use Jetty: http://irc.codehaus.org/display/JETTY/Downloading+Jetty. Comes as Eclipse plugn, maven plugin, stand alone server. Jetty 8 supports servlet 3.0 so it's up to date. Deploying and debugging is fast and easy and it actually works (I use this a lot). Only downer: doesn't have EJB container.
Use tomcat 7 (stand alone install) and the Eclipse sysdeo plugin: http://www.eclipsetotale.com/tomcatPlugin.html. Allows for seamless deployment/debugging as you'd do with a Java SE application inside Eclipse. Again, the downer is no EJB container
If you really wanna use JBoss, try the following:
start in in debug mode all the time by adding this to your run.bat:
set JAVA_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n %JAVA_OPTS%
make your "target" project folder (the one where either Eclipse or Maven (whichever you use)) to be something like [jboss root]\server\default\deploy\myAppName
Start a "Remote Java application" debug session from Eclipse on the port 8787.
With all this the project should deploy any changes you make on the fly, and stop at whatever breakpoints you have when execution reaches them. It's not awesome, as sometimes certain changes will not be taken into account (eg: if you modify the body of a method in a Java class it will be hot-deployed. If you add a new method it will not).
I have developed an web application using HTML, Java Servlet and all. While developing I was using Tomcat to deploy it in order to test it.
Now my development is done and I want to make it live. For that we have live server but as I am new to all this I dont know how to deploy my java web application on live server?
So please help me if you know to answer?
My Project Structure
ProjectName
->src
->beanClass
->class1
->Class2
->easyServlet
->Servlet1
->Servlet2
->Servlet3
->easyTrans
->Class1
->Class2
->Class3
->Class4
->build
->WebContent
->META-INF
->MENIFEST.mf
->WEB-INF
->lib(contain javascript files)
->web.xml
->html1
->html2
->html3
->html4
->html5
I am also using MySql so what I have to about it..
You will have to build a WAR of the project.
You can do this
in eclipse: right click on the project, Click "Export", and choose war file in the dialog (and mention, the destination, name and all)
via ant using the war task
The ant option is better because when you have multiple developers on the project and the code is in version control, it is easier to get the project automatically (using ant) and build a war. (you have version control, don't you?)
But this is more of an operational difference (albeit an important one) but the war created in either way are same
Deploy the war to the server
You can manually copy the war file to the $TOMCAT_HOME/webapps directory (See the "Creating and Deploying a WAR File" section on this article)
You can use the Tomcat 6 "Manager" application.
Update
You said that you are using MySql also. MySql should be installed on a server (it can be on the same server) and the configuration should be changed (username, password, server details) so that the application connects to the same database (I am sure you are not hard coding database details and credentials in your application and reading them from some configuration, this is the configuration that has to be changed)
For that we have live server but as I am new to all this I dont know how to deploy my java web application on live server?
I assume by this you meant , you have a public IP assigned to a server. Now you can install tomcat into this server and open the tomcat port for public and you will be able to access.
Now build a war file of your webapplication and put it into web-apps dir of the tomcat and start the server
Making a few assumptions here. You need
A tomcat instance running on your production server
Permissions to make changes to the tomcat instance
A war file that bundles your application
If you have both, then you need to navigate to the Tomcat manager page and follow the instructions to upload your war file.
Deploy the war to the server
You can manually copy the war file to the $TOMCAT_HOME/webapps directory.
You can use the Tomcat 6 "Manager" application.
I have created myProj.ear file and copied it into the deploy folder of the JBoss server.. How to run my project after starting the jBoss server?
I have been using war file and
deploying it in Tomcat till now to run
my project.... I am having a new
requirement to run the project in
JBoss. So, I converted my war file
into an ear file using the command Jar
-cvf myProj.ear ., Should I change anything in my project to run
the application in JBoss or just
copying my .ear file in to the jBoss
deploy folder is enough?
JBoss normally support hot deployment - meaning that if your application was deployed correctly (watch the console), it can be accessed via the browser (if you have a UI) or via web services, managed beans or any other interface you have provided.You can see the status of your application on the JBoss Admin Console. You can reach it by typing the URL of your JBoss installation. If you run your vanilla JBoss locally, you should be able to find the console under http://127.0.0.1:8080/admin-console
To reiterate: there is no explicit startup necessary, JBoss handles it for you.
Deploying an application in JBoss is pretty straightforward. You just have to copy the EAR file to the deploy directory in the 'server configuration' directory of your choice. Most people deploy it to the 'default' configuration, by copying the EAR file to the JBOSS_DIR/jboss-as/server/default/deploy directory.
Once copied, just run run.sh from bin, you can use the following params to bind it to an ip (-b) or binding it to anything other port (-Djboss.service.binding.set)
./run.sh -b 9.xxx.xxx.xxx -Djboss.service.binding.set=ports-01
Once you run it, Look at the console for error message. If everything goes fine you'd see "Started J2EE application" after couple of seconds.
If there are any errors or exceptions, make a note of the error message. Check that the EAR is complete and inspect the WAR file and the EJB jar files to make sure they contain all the necessary components (classes, descriptors,
jboss-deployment-structure.xml etc.).
You can safely redeploy the application if it is already deployed. To undeploy it you just have to remove the archive from the deploy directory. There’s no need to restart the server in either case. If everything seems to have gone OK, then point your browser at the application URL.
http://localhost:8080/xyz