RAP 3.23 is not able to get real path of tomcat using SerlvetContext. It returns null always

[Jeevan2000]

Let's make sure issue is not already fixed in latest builds first.

• I verified I can reproduce this issue against latest Integration Build of Eclipse SDK

Steps to reproduce

From a fresh installation and clean workspace:

I tried

• We have deployed the .war file of our application in tomcat application server. And we have to get the real path of Tomcat using SerlvetContext.getRealPath("/")
• But the above thing is giving null always. It works fine in RAP 3.12. I need to know what has changed in SerlvetContext from 3.12 to 3.23 version of RAP
• I am expecting the Real Path as " C:\Program Files\Apache Software Foundation\Tomcat 9.0_Tomcat9.86\webapps\WebSphere131
• We need these because we have an license file present inside WEB_INF/eclipse folder, once we get the above path then we append the /WEB_INF/eclipse to get full path and find for license file"

I expected: < To get Real path of tomcat using SerlvetContext >

But got: < Real Path is getting null using SerlvetContext >

Tested under this environment:

• OS & version: Windows 10
• Eclipse IDE/Platform version (as shown in Help > About): Eclipse 2022-12
• RAP version is 3.23
• Java version is 11
• Tomcat version is 9.0.86

Community

• I understand reporting an issue to this OSS project does not mandate anyone to fix it. Other contributors may consider the issue, or not, at their own convenience. The most efficient way to get it fixed is that I fix it myself and contribute it back as a good quality patch to the project.

[Jeevan2000]

Can anyone please provide any information around it? We are facing these issue since long time.

[ifurnadjiev]

I don't remember any change in this field. Could you please create a simple snippet to reproduce the issue with latest RAP 4.3 version in Tomcat 11? Is it possible to be a Tomcat issue or change there? Could you please test with RAP 3.12 and Tomcat 9.0.86?

[ifurnadjiev]

Does it work when running your project from the Eclipse IDE in Jetty?

[Jeevan2000]

It works fine with RAP 3.12 and Tomcat 9.0.86.
We have similar issue with Jetty as well.

[Jeevan2000]

Creating an simple snippet with latest RAP version of 4.3 in Tomcat 11 won't be possible, as we are at very end of release.
Due to time crunch, it will be take more time for the same.
It would be great if you could provide any suggestions around it.

[ifurnadjiev]

Can you show a single line of code how do you obtain the the ServletContext? Something like that:
RWT.getRequest().getServletContext()?

[ifurnadjiev]

Just tested by running a simple entry point from Eclipse IDE with RAP 4.3 M2 and Jetty and
System.out.println( RWT.getRequest().getServletContext().getRealPath( "/" ) ); is not null.

[Jeevan2000]

We were trying to get it using SerlvetContext.getRealPath("/");
Let me try the above solution.

[Jeevan2000]

Tried these RWT.getRequest().getServletContext().getRealPath( "/" ) but it is returning null.

[ifurnadjiev]

This means that it's Tomcat configuration issue and the container can not resolve virtual to real path and return null.

[Jeevan2000]

Do you have idea what configuration issue could cause these. ?

[ifurnadjiev]

I have no idea. Try with different Tomcat version. Latest Tomcat 9 version is 9.0.104. Searching the web about Tomcat and SerlvetContext.getRealPath shows some issues between Tomcat 8 and 9. The virtual path must start with "/". That's everything I can say.

[ifurnadjiev]

Also there is an very old statement in JavaDoc that "This method returns null if the servlet container cannot translate the virtual path to a real path for any reason (such as when the content is being made available from a .war archive)."

[ifurnadjiev]

... and one more hint, you can get Tomcat installation folder absolute path with system property "catalina.base" or "catalina.home".