How to redeploy the web app using the Eclipse IDE - eclipse

Im new to Eclipse. I use Tomcat as my run time server, but every time I modified the jsp pages, Eclipse was still displaying the older one. Just wondering how to redeploy the application so the changes can be reflected.
Eclipse: Eclipse IDE for Java EE Developers 1.2.1.20090918-0703
Tomcat: Tomcat 6.0
Thanks

Doubleclick the server instance in question in the Servers view to open its configuration. Now, in the right top you should see a section called Publishing. Open it to verify and configure autopublishing settings.

Eclipse should do that automatically for you.
Otherwise, on the Servers view (Menu Window->Show View->Servers), you can right click on your Tomcat instance and hit "Publish" or "Restart"
Make sure you have the "JST Server Adapters" ("Web, XML and Java EE Development category") feature installed.

Eclipse's publishing functionality requries the project to be a "web project", and in some cases requires additional configurations.
Go to Windows > Preferences > Server > Runtime environments and add your tomcat
Either try using publishing, or (better I think) use the FileSync plugin. There you can tell which folders from your project should be copied (live) to what directory on your machine (the tomcat/webapps/yourapp). With a little more effort the filesync configuration can be made machine independent (only using one parameter as TOMCAT_ROOT), in case you want to check-in the project to a repository where others will use it.

Get the Tomcat plugin. It was nice because you can install Tomcat on your system and then associate your web app with that instance of Tomcat. The plugin will let you stop/start Tomcat and define a server such that when you do a build it knows how to deploy the changes. There may be some newer plugin but the Tomcat plugin worked for me and was fairly simple to install and use. Here is a page from IBM on using Eclipse and Tomcat. Inside that page it points you to the following: http://www.ibm.com/developerworks/opensource/library/os-eclipse-tomcat/

Related

Running GWT on tomcat in eclipse

I am trying to get a GWT Project running on a Tomcat 7 server in eclipse. I installed Tomcat and i can run other web application out of eclipse on Tomcat without a problem.
Now i generated a gwt maven project for eclipse with the following command and importet it as maven project to eclipse:
"mvn archetype:generate -DarchetypeGroupId=org.codehaus.mojo -DarchetypeArtifactId=gwt-maven-plugin"
I can run this now as Web application (with the google plugin) and i can build a "war" with maven and deploy this with the Tomcat management console on the server. Both is working. But if i choose the option in eclipse "Run on server" and choose tomcat than just the html is loaded but not the application itself. See the screenshot: It doesn't find the "GWTModule.nocache.js".
This file is available in the target folder. What do i have to change to tell tomcat to look in the correct directory?
Tomcat is not able to run GWT code in development mode. You can use Tomcat for server side code, but in this case you need to run GWT development mode with -noserver option (to prevent built-in Jetty instance from running). See this article for more details.
I would recommend using the wtp plugin for eclipse. If you do this you can add your project/resource to tomcat when adding a new server. Here are the steps to use if you already have your project imported into eclipse.
Window -> Show View -> Servers
In Servers
New -> Server -> Choose apache tomcat
Point to the location of your tomcat installation/download
Next
At this point you should be able to add your gwt-maven project which will add the target/project.war to the tomcat modules.
Save it
Click on the newly added server, then click the modules tab at the bottom kind of hard to see.
This should have your project shown in the list of web modules.
Start your tomcat instance then on your gwt application right click and choose Run As -> Web application. Make sure your configuration settings are correct and when the development server starts it should give you the development url to browse to.
You can configure some aspects of tomcat in the overview tab, I would recommend making sure that "Modules auto reload by default" is checked so that tomcat will watch the filesystem for class changes.

Integrating JBOSS and Eclipse

I have JBOSS server. I used to make web applications using just notepad++. I used to create the necessary folders like web-inf and files like web.xml. For larger projects doing all this and manually compiling has become cumbersome. I want to use eclipse for that. I saw this tutorial - http://www.eclipse.org/webtools/community/tutorials/BuildJ2EEWebApp/BuildJ2EEWebApp.html . But I don't understand how to make a server. I already have a server. What I want to do is write JSPs and Servlets in eclipse and the build should automatically be deployed in jboss server.
How to to this?
Install JBoss Tools
After that follow the instructions from here to get started and deploy apps to JBoss Server.
To automatically deploy apps after the build you could use a build tool such as ANT or Maven.
I wrote a tutorial for this some time ago: Setting up web development environments with Eclipse
It shows how to setup JBoss within Eclipse (in addition, it also shows how to setup Tomcat and Weblogic), and also shows how to build a simple sample Servlet to verify the proper installation.
If you already use JBoss on the server side, then have a look at the client side as well: http://www.jboss.org/developer
(I haven't tried it myself, but...)
Just open eclipse then go to:
"Help-> Check For Updates" It will check for eclipse updates and installs new availables.
Now "Help -> Eclipse Market Place" Search for "Jboss tools" from search result select one(as your eclipse version) and install it. It will add adapter for new jboss versions.
Now add new server from server view select Jboss version then next add your Home directory of jboss. Then finish.
Step 1 is optional but it sometime it helps.

Tomcat issues inside eclipse

I am very new to Tomcat and web development in general and apologize for what may be a very silly question.
Consider 2 situations:
1.
I start Tomcat outside of Eclipse.
I use eclipse to create a war file.
I deploy it via admin console.
All is ok
2.
I start Tomcat via Eclipse
I can't access admin console
http://localhost:8080/manager/html greets me with 404 error
Same page is behaving properly when Tomcat is started outside of Eclipse
Please advise
Why might the issue be?
Why might the issue be?
You need to configure Eclipse to take control of your Tomcat installation. To do so:
double click on the Tomcat Server in the Servers view
under Server Locations, select Use Tomcat installation
This is illustrated on the screenshot below:
Eclipse creates a new Tomcat configuration separate to your Tomcat installation, in the 'Servers' project. This allows Eclipse to deploy webapps without interfering with anything you've done in your installation (via the manager app or by editing config files manually).
You can reconfigure Eclipse so that it uses the config from your Tomcat installation (see Pascal's answer), or to re-enable the manager app - but read the WTP Tomcat FAQ first as there are good reasons for it working the way it does. I don't recall ever needing to do this - the 'Servers' tab in Eclipse lets you deploy/start/stop/debug/configure apps as required.

Eclipse Redeploy/Undeploy Web Project without Restarting the Server

In my eclipse web application I made a Web Project and a Library Project. The Web Project referenced the Library Project.
When I started the Server, every time I change a code in the Library Project and build it. The server wants to restart and it does not redeploy by the Web Project only. I do not want to restart the server because it takes a lot of time waiting the startup of the server.
Another is I am developing portlets using Liferay Portal and every time I change the Library Project, the auto-deploy of Liferay comes in but the Library Project Jar is locked and resulted to crash the portlet and did not deploy it until I restart the server.
Please Help!!!
In Java EE perspective find "Servers" tab at the bottom, delete your EAR out of there.
Try JavaRebel
If you install the nightly build of Liferay IDE (eclipse plugins for Liferay) it has support for delta-deployment where after the initial deployment (full deploy) it will only deploy the delta or just the individual files that you change as you save them (a single JSP or CSS file, etc).

What steps are necessary to get Eclipse and a Java servlet container integrated on Ubuntu 9.10?

What's the easiest way for me to get Eclipse running with a Java servlet container on Ubuntu 9.10?
I've tried a number of things, hitting dead ends each time. The best setup would use Ubuntu packages as much as possible, not require running Eclipse as root, and be able to debug running servlets.
Dead ends so far include run-jetty-run, the Sysdeo Tomcat plugin, and Eclipse WTP with tomcat6.
A big part of the problem is that the Ubuntu tomcat6 installation is non-standard, splitting directories such that they're not all in TOMCAT_HOME. Eclipse is also non-standard, and the usual plugin installation methods don't work. I got close by installing the WTP through a PPA, but I stumbled when trying to get it to recognize tomcat.
Ubuntu recently includes a pretty full Eclipse package that you can install via Synaptic or such. But I prefer to download my own.
I download from the Eclipse download site. If I choose Eclipse IDE for Java EE Developers then I have server environments for all Web app containers already built in. If I set up one for Tomcat (in Eclipse), Eclipse will download and install Tomcat for me. It's quite convenient, although I sometimes have trouble finding Tomcat or its files. Eclipse squirrels them away somewhere.
The server setup menus become accessible to you once you create a Web project (not plain Java project).
You should "apt-get install sun-java6-jdk", download and use the Java EE version of Eclipse, and then create a dynamic web project. In the web project create a jsp page, and right click -> "Run -> Run on server" where you may then install a server connector.
Some connectors are included in Java EE, some must be downloaded. Choose the one corresponding to the server you have downloaded and unpacked, and point Eclipse to the directory.
If all succeedes, the JSP page should then show up in a browser served from the started server.