ServletContextHandler and Alias

[voxeohwiegard]

We are using an embedded Jetty server with a ServletContextHandler and map multiple servlets in addition to the DefaultServlet and JettyJspServlet. In our application, a folder ui contains a lot of jsp's as well as static resources. Currently it is reachable under /ui, but we need to make it available with alternative context paths like /brandA and /brandB. The jsp's rely on the context path, due to that using a Filter and forwarding the requests failed. In a WebAppContext, there is the option to register aliases using the WebAppContext.setResourceAlias(), but this is not possible in the ServletContextHandler. Is there any way to mimic this behaviour (without creating symlinks on disk) or are there any other options which we could explore?

[sbordet]

Sorry for the late reply.

I think it will be a good enhancement to lift the resource aliasing to ServletContextHandler.

Can you please open an enhancement issue about this?

[joakime]

You can have multiple DefaultServlet entries too.

Eg: Add a DefaultServlet with url-pattern /brandA with the same base-resource that points to the /ui resources.

[voxeohwiegard]

Thank you, I will try using multiple DefaultServlet entries and I will also raise an enhancement issue.

[joakime]

If you don't mind using Jetty specific stuff, I would use ResourceServlet instead of DefaultServlet.

See: https://github.com/jetty/jetty.project/blob/jetty-12.1.1/jetty-ee11/jetty-ee11-servlet/src/main/java/org/eclipse/jetty/ee11/servlet/ResourceServlet.java

That is what the DefaultServlet actually is.

Eg: https://github.com/jetty/jetty.project/blob/jetty-12.1.1/jetty-ee11/jetty-ee11-servlet/src/main/java/org/eclipse/jetty/ee11/servlet/DefaultServlet.java#L44

The behavior of ResourceServlet is to use the same Base Resource as the ServletContextHandler, but you can provide alternate ones with the init-param called baseResource.

https://github.com/jetty/jetty.project/blob/jetty-12.1.x/jetty-ee11/jetty-ee11-servlet/src/main/java/org/eclipse/jetty/ee11/servlet/ResourceServlet.java#L234