[guice, websockets] The ResourceConfig instance does not contain any root resource classes

[yurique]

Hi!

I've faced this problem trying to run a guice/websocket application in Jetty.
In web.xml I have something like this:

<listener>
    <listener-class>com.test.GuiceServletConfig</listener-class>
</listener>
<filter>
    <filter-name>guiceFilter</filter-name>
    <filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>guiceFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

and in the following in the com.test.GuiceServletConfig:

public class GuiceServletConfig extends GuiceServletContextListener {

@Override
protected Injector getInjector() {
    return Guice.createInjector(new ServletModule() {
        @Override
        protected void configureServlets() {
            Map<String, String> params = new HashMap<String, String>();
            params.put("org.atmosphere.useWebSocket", "true");
            params.put("org.atmosphere.useNative", "true");
            params.put("org.atmosphere.websocket.WebSocketProtocol",
                "com.test.TestWebSocketProtocol"); // which extends WebSocketProtocol
            bind(new TypeLiteral<Map<String, String>>() {
            }).annotatedWith(
                Names.named("org.atmosphere.guice.AtmosphereGuiceServlet.properties")
            ).toInstance(params);
            serve("/ws/*").with(GuiceManagedAtmosphereServlet.class, params);
        }
    });
}
}

And during deployment I get this exception thrown:

03:25:53.372 [Scanner-1] ERROR org.atmosphere.cpr.AtmosphereServlet - failed to initialize atmosphere framework
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
    at com.sun.jersey.server.impl.application.RootResourceUriRules.<init>(RootResourceUriRules.java:99) ~[jersey-server-1.9.1.jar:1.9.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1298) ~[jersey-server-1.9.1.jar:1.9.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:169) ~[jersey-server-1.9.1.jar:1.9.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:775) ~[jersey-server-1.9.1.jar:1.9.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:771) ~[jersey-server-1.9.1.jar:1.9.1]
    at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193) ~[jersey-core-1.9.1.jar:1.9.1]
    at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:779) ~[jersey-server-1.9.1.jar:1.9.1]
    at org.atmosphere.guice.GuiceContainer.initiate(GuiceContainer.java:82) ~[atmosphere-guice-0.8.5.jar:0.8.5]
...

If I configure the same application via web.xml with <servlet-class>org.atmosphere.cpr.AtmosphereServlet</servlet-class>
and <init-param>'s atmosphere starts normally.

If I add a following line: bind(ResourceChat.class); (from chat example) it starts normally.

[jfarcand]

Salut, again, apology for the delay I've completely missed those two issues :-( Either you bind the resource or you pass the Jersey init-param

   com.sun.jersey.config.property.packages

value: your package to make it working. I don't think without Jersey is able to locate its resource. I'm closing the issue as not a bug, please re-open if you think I am wrong.

Thanks!

-- Jeanfrancois

[yurique]

Hi! Thanks for clarifying this!

[issamm]

Hi. I'm having the same problem with Atmosphere 1.1.0.beta2, on Jetty 8.1.2.v20120308.

The difference is that I'm not using Guice (and don't know what it is)
The exception :

2013-02-11 10:40:06.241:WARN:oejs.ServletHandler:/myws com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.

I use this Eclipse plugin : run-jetty-run
In my web.xml :

<servlet>
        <description>AtmosphereServlet</description>
        <servlet-name>AtmosphereServlet</servlet-name>
        <servlet-class>org.atmosphere.cpr.AtmosphereServlet</servlet-class>
        <init-param>
            <param-name>com.sun.jersey.config.property.packages</param-name>
            <param-value>my.package</param-value>
        </init-param>
</servlet>

with "my.package" containing my WebSocketHandlerAdapter implementation.

Do you have an idea please ?

Thanks.