I have two projects in Eclipse. One Project is a dynamic web project which is deployed on the integrated tomcat server everytime i make changes to it (which works great).
The second project is a library project which currently needs to be build with ant. The resulting .jar file needs to be copied manually to the first project's WEB-INF/lib directory and the whole project needs to be refreshed, rebuilt and the tomcat needs to be restarted.
Is there a way to connect the library project to the web project so that changes made to the library will be automatically deployed to the web project? This would make the whole development process a lot easier
In your webapp project go to properties. Under "Deployment Asselmbly" you can add your other project. So it's automaticaly added to your WEB-INF/lib folder.
More information here.
Related
I have a Dynamic Web Project that gets deployed as a WAR that I have created in Eclipse. The project depends on 2 other small projects. I have them marked for export, and have them on the build path, but Eclipse warns me that it will not be exported, and sure enough, I get a ClassNotFoundException when I try to compile.
If need be, I can pull all the java files into a .zip file, but I don't know how to add a .zip file as a dependency. I'm sure I'm making this harder than it needs to be.
Open the web project's Properties dialog (context menu, or Project menu from the menu bar) and go to the Deployment Assembly page. This is where you tell it to also make them jars when deploying.
I am pulling JavaScript from a jar as part of my build process. I wish this js to be part of my web resources for the app deployed on tomcat and I have updated my build process to allow this to happen. Doing a maven build (outside eclipse) works as expected and I can package up a war with everything in its proper order.
However, when building with eclipse I have run into some headaches. My understanding was in order to have web resources deployed to tomcat through an incremental build, I needed to put these build-time generated js files into the target/m2e-wtp/web-resources directory. However, when I publish these new files are ignored and the web-resources deployed to tomcat seem to be pulled from my source.
I also adjusted my project's deployment assembly settings. Through this I still don't have it working. I have the entry [source:/target/m2e-wtp/web-resources, DeployPath:/] which should find the newly generated files when I perform a "publish" to the server. However, the same thing happens where m2e-wtp seems to be pulling from source.
Am I missing something? How can I get standard behavior from m2e-wtp (i.e. make it comparable to a build done outside of eclipse)? Or can I have eclipse just build the war and deploy it as such (not do the incremental builds, I can sacrifice some speed)?
FYI (versions):
eclipse: (Using Spring Tool Suite) 3.2.0
m2e: 1.3.1
m2e-wtp: 0.17.0
tomcat: 7.0
Experiment added later:
After deleting my target dir, I performed a publish to Tomcat and all the web-resources were copied from my source. I also got a popup about files not found, most of which are compiled classes. However, it was looking for three files in the /target/m2e-wtp/web-resources/META-INF. Does the m2e-wtp plugin only look for specific files in a folder rather than the entire specified folder?
The problem is that the target directory was not being refreshed. Eclipse (or m2e plugin for that matter) doesn't recognize or care that files change in the target directory during a build, something that I was assuming. For now I have the auto-refresh (for the workspace) option on. The refresh on access option didn't working as it seemed to trigger the refresh only when I was publishing to tomcat for the first time.
I am developing a project on Eclipse Juno using both GWT and GAE.
My original project had all its packages and classes on the same project and it worked fine both on Development Mode and when uploaded to the Google App Engine on the Internet.
Then I created another project (on the same workspace) were I moved the classes that were generic so they could be used on other projects. I have not created a Jar file. Do I have to? I wish I could just keep my generic classes on another project without putting them on a jar file.
After a while I was able to create correct XXX.gwt.xml files on both projects and added the new project to the "Projects" tab of the main project properties (Project >> Properties >> Projects) to make the moved classes visible to the main project. The GWT compiler found those moved classes, translated them into Javascript code and the main project was able to execute them on the client side.
My problem is on the server side. No matter what I try the server part cannot find the moved classes and when trying to execute any of them it comes with the "NoClassDefFoundError" error when running on the Development Mode (I have not tried to upload to the Google App Engine on the Internet yet).
If I comment out all the references to those classes on the server side the error does not show up, but of course I don't have their functionality.
Gaston Ceron
Yes, you'll have to create a jar of the second project, and put it in the WEB-INF/lib folder.
If you can use maven or ant, you can probably set up appengine to compile the other project into a jar and use it as a dependency for the app engine project.
Can someone guide me to setup a web app project in Eclipse. I want to have a Dynamic Web Project and multiple Pure Java Projects. My Web project will contain JSPs and Java projects will contain Struts Action classes, Spring Bean, Hibernate Entities etc. I want to use those Java Projects as dependency to the WAR. I have done work in such environments, but haven't setup a workspace from the scratch. Can you please guide me or share a link?
Note: I want to use Apache Tomcat or Glassfish as server
In every project you can set the JavaBuild Path properties.
So suppose you have project1 that is dependent on project 2 and some other libraries provided as jars. Go to that option for project1, choose tab Projects and add project2 (that of course is already a eclipse project), than go to tab Libraries and clic on Add external jars.. You are done. This is not dependant by the nature of the project.
Specifically, since you have a Dynamic Web Project, you'll need to go also to Deployment Assembly and add project2 and your jars to the list of files needed by the server.
I use Tomcat 6.0 and Eclipse 3.0 under Linux and I try to deploy a WAR in Tomcat. The problem is that the server is managed by Eclipse and I have some Eclipse project deployed. I tried to modify the server.xml file then launch Tomcat via Eclipse but it doesn't work:
Could not load the Tomcat server configuration at /Servers/Tomcat v6.0 Server at localhost-config. The configuration may be corrupt or incomplete.
I tried to extract the war in the webapps directory but the webapp is still inaccessible.
What is the best practice to deploy a War ?
Tomcat behaves differently in development and production mode. When you develop your webapp in Eclipse there is no reason to deploy a WAR file of your application as a WAR during development.
Just go to the "servers" view and add a new server (you should already have done this otherwise you could not create your Dynamic Web project). In the server view you should see the server you created (Tomcat at localhost or something similar) just right click it and go to the Add and Remove section. Here you can add and remove the Dynamic Web projects you created in Eclipse. Once you added your project, all you have to do is click the green start button in the servers view and your app should be available in at localhost:8080/mycontext.
When you're done building your app just right click the project and go the the Export section in the menu. You should be able to export a WAR file. Once you have your WAR file you can upload and deploy that on a Tomcat instance that is NOT tied to Eclipse running in dev mode.
Yes, in a way, you can deploy a war in the dev mode.
I have the same problem.
I have an Eclipse webapp project, which Eclipse deploys to an instance of Tomcat run by Eclipse, so I can hot-edit the project.
This Web project needs to use resources published by another webapp that has to be run within the same instance of Tomcat. The other webapp is a completed project by someone else, so it is already in a war form.
I needed to File->Import the war as an Eclipse project and let Eclipse deploy it to the same instance of Eclipse, in order to run it in the same instance of Tomcat in which my webapp also runs.
The problem is that some wars work this way but some others do not, while all of them work perfectly fine in a stand-alone Tomcat (started by startup.sh). I can't figure out why.
This is old but is one of the first answers in google search.
You can import the war file:
A Web Archive (WAR) file is a portable, packaged Web application
that you can import into your workspace.
Before importing a WAR file,
you should first determine if the WAR file contains needed Java™ source
files. When importing a WAR file into an existing Web project, the imported
Web deployment descriptor files are either not changed or overwritten by the
ones included in the imported WAR file, based on your response to the prompt
that is provided. In either case, this action does not represent a
merging of the two sets of deployment descriptors.
To import the
Web project resources in a WAR file into your workspace, complete the following
steps:
Select File > Import
.
In the Import dialog, select WAR file and
then click Next.
Locate the WAR file that you want to import using the Browse button.
The wizard assumes you want to create a new Web project with the
same name as the WAR file. If you accept this choice, the project will be
created with the same servlet version as specified by the WAR file and in
the same location. If you want to override these settings, you can click New and
specify your new settings in the Dynamic Web Project wizard.
Click Finish to populate the Web
project.
Source: http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.wst.webtools.doc.user%2Ftopics%2Ftwimpwar.html
If all you have is a binary WAR (no source code), it cannot be installed within Eclipse. This can happen in certain scenarios outside of normal development workflows. Here's the work-around solution:
Launch another instance of Tomcat (outside Eclipse).
Modify the tomcat-users.xml file to enable admin
Go to http://localhost:8080/manager/html
Scroll down to WAR file to deploy
Click Choose File (next to Select WAR file to upload) and click Deploy.