Eclipse Community Forums: ServerTools (WTP) » After migration/update, Tomcat says "The main resource set specified [...] is not valid"

Home » Language IDEs » ServerTools (WTP) » After migration/update, Tomcat says "The main resource set specified [...] is not valid"

Show: Today's Messages :: Show Polls :: Message Navigator

After migration/update, Tomcat says "The main resource set specified [...] is not valid" [message #1775829]

Mon, 06 November 2017 22:25

David M. Karr

Messages: 801
Registered: July 2009

Senior Member

I have two Gradle webapps projects in my workspace that I've been running in Eclipse in Tomcat 8.5.11 for quite a while. I recently had to have my laptop reimaged. My workspace was restored, but I believe it removed any jar files or executable files in the copy (not going to rely on that process again).

I haven't changed any of the code in either project in quite a while, but today I added one dependency to the build.gradle, for a new capability that I need. I verified that the project builds from the command line successfully.

I reinstalled Eclipse and I believe I've now installed all the plugins I require. I added a new Tomcat distribution (8.5.23) and I added the two projects to the server instance. When I start the server, i see errors like this:

Caused by: java.lang.IllegalArgumentException: The main resource set specified [...\workspace-oxygen\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\combinedAtgUslMonitorGUI] is not valid
	at org.apache.catalina.webresources.StandardRoot.createMainResourceSet(StandardRoot.java:749)
	at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:706)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

The contents of that "wtpwebapps" directory shows the following two entries:
* ROOT
* combinedAtgUslMonitorService

The last one is the second of the two apps.

I noticed that something edited my "server.xml" file in the server definition, adding the following:

      <Context docBase="combinedAtgUslMonitorGUI" path="/combinedAtgUslMonitorGUI" reloadable="true" source="org.eclipse.jst.j2ee.server:combinedAtgUslMonitorGUI"/><Context docBase="combinedAtgUslMonitorService" path="/combinedAtgUslMonitorService" reloadable="true" source="org.eclipse.jst.j2ee.server:combinedAtgUslMonitorService"/></Host>

In the console output, I don't see a similar error message for "combinedAtgUslMonitorService", but I also don't see log lines that make it seem like it successfully deployed that project (or the GUI one, for that matter).

Report message to a moderator

Re: After migration/update, Tomcat says "The main resource set specified [...] is not valid&quo [message #1775831 is a reply to message #1775829]

Mon, 06 November 2017 22:38

David M. Karr

Messages: 801
Registered: July 2009

Senior Member

I've tried the following:
* "Publish"
* "Clean..."
* "Clean Tomcat Work Directory..."
* "Clean Module Work Directory..."
* Removing the GUI project, applying, adding the GUI project, applying

None of these have made any difference.

Report message to a moderator

Re: After migration/update, Tomcat says "The main resource set specified [...] is not valid& [message #1775832 is a reply to message #1775831]

Mon, 06 November 2017 22:40

David M. Karr

Messages: 801
Registered: July 2009

Senior Member

And it is consistent, in that "Browse Deployment Location..." shows the aforementioned "wtpwebapps" directory, containing the two directories I listed earlier.

Report message to a moderator