Issue with Configuring Specific Static Resources in the same base directory ee10 jetty 12.0.10

[Emilyserap]

Jetty version(s)
12.0.10

Jetty Environment
ee10

Java version/vendor
17

Description
I am encountering an issue while configuring specific static resources in the same base directory. When I try to access these resources, I receive a HTTP ERROR 404 Not Found

ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");

ResourceFactory resourceFactory = ResourceFactory.of(context);
context.setBaseResource(resourceFactory.newResource(mainResourceBase));

ServletHolder holderAlt = new ServletHolder("static", DefaultServlet.class);
holderAlt.setInitParameter("dirAllowed", "true");
holderAlt.setInitParameter("acceptRanges", "true");
context.addServlet(holderAlt, "/index.html");

ServletHolder holderDef = new ServletHolder("default", DefaultServlet.class);
holderDef.setInitParameter("dirAllowed", "true");
context.addServlet(holderDef, "/")

[janbartel]

Can you show examples of resource requests that fail?

[Emilyserap]

The issue only serving the /index.html

[joakime]

Call server.setDumpAfterStart(true); before server.start(); and verify that there is a Base Resource.

I say this, because you are not checking that the line resourceFactory.newResource(mainResourceBase) is returning null (such as if it cannot find that resource).

What is mainResourceBase btw?

[Emilyserap]

resourceFactory.newResource(mainResourceBase) is not returning null. I tested the same code in Jetty EE9, and it works correctly; I can access the request /index.html. Therefore, I think the problem is in the class DefaultServlet.java EE10.

[joakime]

You are using Windows (and important thing to note when working with File System issues on Java).

Can you access some of the static resources? or none of them?
If you enable DEBUG logging do you see any mentions of "alias" issues?
In the path D:\eclipse-workspace\Jetty12authEE10\bin\main\static-root\ are any of those path sub-entries a link? (hard / soft / fs / etc)

Is the path D:\eclipse-workspace\Jetty12authEE10\bin\main\static-root\ using the exact case (as stored on disk) of each sub-entry in that path? (if you are being lazy and using C:\foo\bar when the actual directories are C:\Foo\Bar then this would trigger all sorts of security features and alias checking behaviors as the paths are not exactly the same. (This also goes for the requested resources within that base resource. eg: don't request /index.html if the stored on disk file is Index.Html)

[Emilyserap]

I can access to all the static resources except index.html. For example, I can access to static resources that end with .js. However, I can't access the static resource index.html. Here is my configuration:

Server server = new Server();
		ServerConnector connector = new ServerConnector(server);
		connector.setPort(8080);
		server.addConnector(connector);
		URI webRootUri = findDefaultBaseResource();
		System.err.println("Default Base Resource is " + webRootUri);

		ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS | 
                ServletContextHandler.SECURITY);
		context.setContextPath("/welcome");
		ResourceFactory resourceFactory = ResourceFactory.of(context);
		context.setBaseResource(resourceFactory.newResource(webRootUri));

		final var holderJs = new ServletHolder("js", DefaultServlet.class);
		holderJs.setInitParameter("dirAllowed", "true");
		holderJs.setInitParameter("cacheControl", "public, max-age=0, must-revalidate");

		context.addServlet(holderJs, "*.js"); // Map to all paths ending with .js
		ServletHolder holderAlt = new ServletHolder("static", DefaultServlet.class);
		holderAlt.setInitParameter("dirAllowed", "false");

		holderAlt.setInitParameter("cacheControl", "no-store");
		context.addServlet(holderAlt, "/index.html");
		ServletHolder holderDef = new ServletHolder("default", DefaultServlet.class);
		holderDef.setInitParameter("dirAllowed", "true");
		context.addServlet(holderDef, "/");
		server.setHandler(context);
		server.start();
		server.join();`

[joakime]

Can you please copy/paste?
Don't use screenshots / images, as it doesn't help others in the future. (people searching for help cannot find similar issues).
Also, it doesn't help us when helping you.

[joakime]

You only need 1 DefaultServlet and it will always be mapped to / (no other url-pattern).
Get rid of the other ones.

If you want welcome file behavior, use one of the ServletContextHandler.setWelcomeFiles() methods.

[Emilyserap]

If I want to specify a configuration for the static resource index.html, for example, or for other resources ending with .js, because not all of them have the same InitParameter?

ServletHolder holderAlt = new ServletHolder("static", DefaultServlet.class);
holderAlt.setInitParameter("dirAllowed", "false");
holderAlt.setInitParameter("cacheControl", "no-store");
context.addServlet(holderAlt, "/index.html");
ServletHolder holderDef = new ServletHolder("default", DefaultServlet.class);
holderDef.setInitParameter("dirAllowed", "true");
context.addServlet(holderDef, "/");

For the static resource index.html, we have set .setInitParameter("dirAllowed", "false"); and for the default, we have set .setInitParameter("dirAllowed", "true");

[joakime]

If I want to specify a configuration for the static resource index.html, for example, or for other resources ending with .js, because not all of them have the same InitParameter

DefaultServlet does not work with url-patterns that are absolute-path (eg: /index.html), or suffix based (eg: *.js). It only works with default (eg: /) or directory-prefix (eg: /static/*)

[Emilyserap]

so I cannot assign special configurations for non-default DefaultServlets?
But I don't understand if the problem is related to class DefaultServlet in Jetty 12 ee10, because the same code worked in Jetty 12 ee9, allowing access to all resources, including index.html with specific configuration to the index.html

[joakime]

so I cannot assign special configurations for non-default DefaultServlets?

You can, but there are restrictions.

• Extra configurations MUST be done on new DefaultServlet instances (you cannot reuse the ServletHolder)
• Extra DefaultServlet instances only support url-patterns defined as either ...
  1. default pattern: only /
  2. prefix directory pattern: eg: /static/* or /css/* or /scripts/*, but not /foo.* as that's not a directory.
• Each new DefaultServlet needs it's own Base Resource

See example at https://github.com/jetty/jetty-examples/blob/12.0.x/embedded/ee10-file-server/src/main/java/examples/ServletFileServerMultipleLocations.java