RestEasy JAX-RS ApplicationPath 返回 404

Question

I'm converting an app from Jboss 6.4/Java8 -> JBoss 7.2/Java11 and I'm running into the error where my endpoint annotations seem to be ignored by the app and return error code 404. You can see in the logs where the web context is registered and where the web.xml authenticates the path based on the security constraint, but the request still returns a 404.

I've updated the EE and REST libraries but to no avail.

The app has 2 @ApplicationPath annotations. How are the JAXRS annotation different from EAP6 to EAP7?

RestApplication

package com.web;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

@ApplicationPath("/rest")
public class RestApplication extends Application {
}

AppResource

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Path("/applications")
public class AppResource{

    private static final Logger logger = LoggerFactory.getLogger(AppResource.class);

    @Context
    private HttpServletRequest httpRequest;

    @GET
    @Path("/")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getApplications() {
    ...
    }
    ...

}

jboss-deployment-structure

<?xml version="1.0"?>
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2">
    <deployment>
        <dependencies>
            <module name="org.jboss.resteasy.resteasy-jaxrs"/>
            <module name="com.fasterxml.jackson.core.jackson-core"/>
            <module name="com.fasterxml.jackson.core.jackson-databind"/>
            <module name="com.fasterxml.jackson.core.jackson-annotations"/>
        </dependencies>
    </deployment>
    <sub-deployment name="WebApp.war">
        <dependencies>
            <module name="javax.api"/>
            <module name="javaee.api"/>
            <module name="org.jboss.msc"/>
            <module name="org.jboss.as.server"/>
            <module name="org.jboss.resteasy.resteasy-jaxrs"/>
            <module name="com.fasterxml.jackson.core.jackson-core"/>
            <module name="com.fasterxml.jackson.core.jackson-databind"/>
            <module name="com.fasterxml.jackson.core.jackson-annotations"/>
        </dependencies>
    </sub-deployment>
</jboss-deployment-structure>

Answer 1

Jaxrs subsystem was missing from my standalone so I needed to add it manually.

SCR

#JAXRS
if (outcome != success) of /subsystem=jaxrs:read-resource()
    /subsystem=jaxrs:add()
    reload
end-if

standalone

<subsystem xmlns="urn:jboss:domain:jaxrs:1.0"/>