Hi,

I'm using the Spring Boot starter for Undertow. The dependencies which are pulled in are:

org.springframework.boot:spring-boot-starter-undertow:jar:2.0.0.M3:compile

| +- io.undertow:undertow-core:jar:1.4.18.Final:compile

| | +- org.jboss.xnio:xnio-api:jar:3.3.8.Final:compile

| | \- org.jboss.xnio:xnio-nio:jar:3.3.8.Final:runtime

| +- io.undertow:undertow-servlet:jar:1.4.18.Final:compile

| | \- org.jboss.spec.javax.annotation:jboss-annotations-api_1.2_spec:jar:1.0.0.Final:compile

| +- io.undertow:undertow-websockets-jsr:jar:1.4.18.Final:compile

| | \- org.jboss.spec.javax.websocket:jboss-websocket-api_1.1_spec:jar:1.1.0.Final:compile

| +- javax.servlet:javax.servlet-api:jar:3.1.0:compile

| \- org.glassfish:javax.el:jar:3.0.0:compile

Now, when I run the application through Java 9 (Release candidate) and I have a module-info.java (Jigsaw), then I get the following error:

Error occurred during initialization of boot layer

java.lang.module.FindException: Unable to derive module descriptor for C:\Users\xxxxx\.m2\repository\org\jboss\spec\javax\annotation\jboss-annotations-api_1.2_spec\1.0.0.Final\jboss-annotations-api_1.2_spec-1.0.0.Final.jar

Caused by: java.lang.IllegalArgumentException: jboss.annotations.api.1.2.spec: Invalid module name: '1' is not a Java identifier

It seems there is an issue with the determination of the naming of the automatic module. I expect to have the same issue for jboss-websocket-api_1.1_spec.

The name of the jar file isn't aligned on the algorithm defined under (http://download.java.net/java/jigsaw/docs/api/java/lang/module/ModuleFinder.html).

Is anyone aware of this issue? Is this something that can be resolved?