巽曌

Question

I have developed a dynamic web project in Eclipse. Now I can access it through my browser using the following URL:

http://localhost:8080/MyDynamicWebApp

Now I want to change the access URL to

http://localhost:8080/app

I changed the context root from the project "Properties | Web Project Settings | Context Root".

But it is not working. The web app still has the access URL as earlier. I have re-deployed the application on Tomcat, re-started the Tomcat and have done everything that should be done, but the access URL is the same as earlier.

I found that there were no server.xml file attached with the WAR file. Then how the Tomcat is determining that the context root of my web app is /MyDynamicWebApp and is allowing me to access the application through that URL?

not working for me all this – Tushar Trivedi May 15 '13 at 9:05

Basil Bourque · Accepted Answer · 2012-04-13 05:24:10Z

I'm sure you've moved on by now, but I thought I'd answer anyway.

Some of these answers give work-arounds. What actually must happen is that you clean and republish your project to "activate" the new URI. This is done by right-clicking your server (in the Servers view) and choosing Clean. Then you start (or restart it). Most of the other answers here suggest you do things that in effect accomplish this.

The file that's changing is workspace/.metadata/.plugins/org.eclipse.wst.server.core/publish/publish.datunless, that is, you've got more than one server in your workspace in which case it will be publishN.dat on that same path.

Hope this helps somebody.

Not sure if this is proper etiquette or not -- I am editing this answer to give exact steps for Eclipse Indigo.

(1) In your project's Properties, choose "Web Project Settings".

(2) Change "Context root" to "app".

screen shot of Eclipse project properties Web Project Settings

(3) Choose Window > Show View > Servers.

(4) Stop the server by either clicking the red square box ("Stop the server" tooltip) or context-click on the server listing to choose "Stop".

(5)On the server you want to use, context-click to choose "Clean…".

enter image description here

(6) Click OK in this confirmation dialog box.

Screenshot of dialog asking to update server configuration to match the changed context root

Now you can run your app with the new "app" URL such as:

http://localhost:8080/app/

Doing this outside of Eclipse, on your production server, is even easier --> Rename the war file. Export your Vaadin app as a WAR file (File > Export > Web > WAR file). Move the WAR file to your web server's servlet container such as Tomcat. Rename your WAR file, in this case to "app.war". When you start the servlet container, most such as Tomcat will auto-deploy the app, which includes expanding the war file to a folder. In this case, we should see a folder named "app". You should be good to go. Test your URL. For a domain such as "example.com" this would be: http://www.example.com/app/

Thanks so much to Russ Bateman for posting the correct answer to this frustrating problem.

Vaadin toolkit programmers may need to rebuild their widget set if using visual add ons.

--Basil Bourque

Great answer !!! You save my life ost of the other answers here suggest you do things that in effect accomplish this — AndreaNobili, Dec 4 '12 at 12:26
Here's the genius of this reply: I Googled my way to this page, and didn't even read the tags (I am building an ASP.NET website using Visual Studio). But the solution worked anyway! — Curt, Jan 25 at 21:01

Csaba_H · Answer 2 · 2010-03-13 07:11:41Z

After changing the context root in project properties you have to remove your web application from Tomcat (using Add and Remove... on the context menu of the server), redeploy, then re-add your application and redeploy. It worked for me.

If you are struck you have another choice: select the Tomcat server in the Servers view. Double clicking on that server (or selecting Open in the context menu) brings a multipage editor where there is a Modules page. Here you can change the root context of your module (called Path on this page).

Thanks! This did the trick for me. however, it even works without changing the context root in the project properties. Am I missing something here? — Chris, Mar 16 '11 at 15:33

limc · Answer 3 · 2010-05-17 21:13:53Z

If you are running Tomcat from Eclipse, it doesn't use the configuration from your actual Tomcat installation. It uses the Tomcat configuration that it created and stored under "Servers" project. If you view your Eclipse workspace, you should see a project called "Servers". Expand that "Servers" project and you will come across server.xml. Open this file and scroll all the way to the bottom, and you should see something like this:-

<Context docBase="abc" path="/abc" reloadable="true" source="org.eclipse.jst.jee.server:abc"/>

Here, you can just change your project context path to something else.

Hope this helps.

I'm not sure your want to change all 3 values. Csaba_H's solution worked for me and that only changes the "path" attribute... — Chris, Mar 16 '11 at 15:29
This one didn't work for me - the files in that directory get overwritten when you restart the server. Csaba_H's version two, Modules tab under Tomcat Server, seems like the "right" approach. — idarwin, Sep 4 '12 at 23:52

tosha Shah · Answer 4 · 2012-08-30 16:31:44Z

I tried out solution suggested by Russ Bateman Here in the post

http://localhost:8080/Myapp to http://localhost:8080/somepath/Myapp

But Didnt worked for me as I needed to have a *.war file that can hold the config and not the individual instance of server on my localmachine.

Reference

In order to do that I need jboss-web.xml placed in WEB-INF

<?xml version="1.0" encoding="UTF-8"?><!--Copyright(c)2008ObjectComputing,Inc.All rights reserved.--><!DOCTYPE jboss-web PUBLIC "-//JBoss//DTD Web Application 4.2//EN""http://www.jboss.org/j2ee/dtd/jboss-web_4_2.dtd"><jboss-web><context-root>somepath/Myapp</context-root></jboss-web>

This worked for me. Environment = Eclipse + m2e + m2e-wtp + deploying to JBoss from Servers view. Needed to deploy main web project as ROOT and no Eclipse setting did the trick. I copied Tosha's file (above) and places "ROOT" sans quotes as the context-root value. Done and done. Thanks, @Tosha! — Steven Francolla, Apr 23 '13 at 19:21
This works, but I wonder why it ignores the setting in project properties? — Vedran, May 3 '13 at 11:38

eeerahul · Answer 5 · 2011-11-14 12:19:15Z

Apache tomcat keeps the project context path in server.xml path. For each web project on Eclipse, there is tag from there you can change it.
Suppose, there are two or three project deployed on server. For each one context path is stored in . This tag is located on server.xml file within Server created on eclipse.

I have one project for there on context root path in server is:

<Context docBase="Test" path="/test" reloadable="true" source="org.eclipse.jst.jee.server:Test1"/>

This path represents context path of your web application. By changing this path, your web app context path will change.

user418836 · Answer 6 · 2011-10-28 19:30:14Z

In the java project, open .settings folder. there locate the file named "org.eclipse.wst.common.component" . Change tag <wb-module deploy-name="NEW_NAME"> .

Also you may want to change context root in project properties

Alan Weiss · Answer 7 · 2013-11-26 16:14:32Z

In Glassfish you must also change the file WEB-INF/glassfish-web.xml

<glassfish-web-app><context-root>/myapp</context-root></glassfish-web-app>

So when you click in "Run as> Run on server" it will open correctly.

巽曌

Java - How to change context root of a dynamic web project in Eclipse?

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