simple-web-app | Simple web application that demonstrates use | OAuth library

I am converting a Spring MVC app to Spring Boot. The Spring app has a Home controller:

Following on from this question, I am using the Spring Boot MitreID OIDC application from here. This runs OK

I am trying to access it using simple-web-app. Simple-web-app now can see the OIDC app. It still asks for user/pwd even though I am logged in in the OIDC app. When I enter these I now get the following error. I can't find any help. Anyone have any idea?

I am using the Spring Boot MitreID OIDC application from here. This runs OK and I can login but there are no other options available to me:

I am trying to access it using simple-web-app. In simple-web-app I try to login using URI: http://localhost:8080/openid-connect-server-webapp/. This gives:

I am trying to get OIDC working with Java Spring Boot. Specifically the example app here.

I am a newbie to this stuff, so can anyone give me brief instructions on how to run that app?

I have it in Eclipse (with STS4) as existing maven project (as per these instructions). When I run it I pick 'Java application' which gives me some examples including version, Licence, roller etc etc. I do not know which, if any, of these is correct, nor how do I pass parameters etc. Any pointers are gratefully received.

Only ultimate has web application support so that's out of the way.

I am trying to start ope up my web app via tomcat something wich i do succesfully on the same machine on netbeans with next to no configuration.

What is the step by step gide to getting this to work here are several of my attempts : both are added for good measure

all possible combinations with EE and non EE remote and local.

none of which work.

I've done this : Cannot run/debug jsp page from within IntelliJ using Tomcat server

checked this : Intellij IDEA Tomcat Application Server was not connected before run configuration stop, reason: Unable to ping server at localhost:1099

done this : IntelliJ, can't start simple web application: Unable to ping server at localhost:1099

but nothing gives way.

Running tomcat local (first thing I tried and what I would have bet on. Chrome actually opens but the page cannot be found.)

Which is more promissing because tomcat if acually found if I manually navigate to index.jsp :

but no other url works. not the project path not its path plus index.jsp :

Running tomcat remote :

same for TomEE local runs but fails to find webpage. remote fails to run with same error message. though unless the terminology is seriously *** up (I've seen app makers go this far before) what I want is local.

Please help