3 Replies Latest reply on Mar 21, 2015 3:49 PM by guillaume.clement

The ResourceConfig instance does not contain any root resource classes.

nicolas.maujean Jun 30, 2014 7:14 PM

I've successfully deployed and tested a RESTful web service in Tomcat 6. I tried all solutions for the following error message, but still get it, anyone can help ? :

{23:17:54,421 ERROR [[/jerseytest]] StandardWrapper.Throwable: 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) [:1.18.1]

at com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1359) [:1.18.1]

at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:180) [:1.18.1]

at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:799) [:1.18.1]

Here is the Resource class which is under the WEB-INF/classes directory:

package com.rmw.lcf;

import javax.ws.rs.GET;

import javax.ws.rs.Path;

import javax.ws.rs.Produces;

/** Example resource class hosted at the URI path "/myresource"

@Path("/myresource")

public class MyResource {

/** Method processing HTTP GET requests, producing "text/plain" MIME media

* type.

* @return String that will be send back as a response of type "text/plain".

@GET

@Produces("text/plain")

public String getIt() {

return "Hi there!";

}

Here's the web.xml:

<?xml version="1.0" encoding="UTF-8"?>

<!-- This web.xml file is not required when using Servlet 3.0 container,

see implementation details http://jersey.java.net/nonav/documentation/latest/jax-rs.html#d4e194 -->

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<servlet-name>Jersey Web Application</servlet-name>

<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>

<init-param>

<param-name>javax.ws.rs.Application</param-name>

<param-value>com.rmw.lcf.MyApplication</param-value>

</init-param>

<init-param>

<param-name>com.sun.jersey.config.property.resourceConfigClass</param-name>

<param-value>com.sun.jersey.api.core.PackagesResourceConfig</param-value>

</init-param>

<init-param>

<param-name>com.sun.jersey.config.property.packages</param-name>

<param-value>com.rmw.lcf</param-value>

</init-param>

<load-on-startup>1</load-on-startup>

</servlet>

<context-param>

<param-name>resteasy.scan</param-name>

<param-value>false</param-value>

</context-param>

<context-param>

<param-name>resteasy.scan.providers</param-name>

<param-value>false</param-value>

</context-param>

<context-param>

<param-name>resteasy.scan.resources</param-name>

<param-value>false</param-value>

</context-param>

<servlet-mapping>

<servlet-name>Jersey Web Application</servlet-name>

<url-pattern>/webresources/*</url-pattern>

</servlet-mapping>

</web-app>

1. Re: The ResourceConfig instance does not contain any root resource classes.

luiz_gustavo Aug 11, 2014 3:55 PM (in response to nicolas.maujean)

Hi Nicolas Maujean, I have the same problem. Have you solved this?

I could successfully deploy a REST application in Tomcat, with the same configurations, but when it came to JBoss I got this same error.

Here are some additional information.

Jersey dependencies in my project:

<dependency>
       <groupId>com.sun.jersey</groupId>
       <artifactId>jersey-client</artifactId>
       <version>1.17.1</version>
</dependency>

<dependency>
       <groupId>com.sun.jersey</groupId>
       <artifactId>jersey-json</artifactId>
       <version>1.17.1</version>
       <exclusions>
            <exclusion>
                   <groupId>com.sun.xml.bind</groupId>
                   <artifactId>jaxb-impl</artifactId>
            </exclusion>
         </exclusions>
</dependency>

<dependency>
      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-server</artifactId>
      <version>1.17.1</version>
      <exclusions>
            <exclusion>
                  <groupId>asm</groupId>
                  <artifactId>asm</artifactId>
            </exclusion>
      </exclusions>
</dependency>

<dependency>
     <groupId>com.sun.jersey</groupId>
     <artifactId>jersey-servlet</artifactId>
     <version>1.17.1</version>
</dependency>

My web.xml configuration:

<servlet>
   <servlet-name>Jersey REST Service</servlet-name>
   <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
   <init-param>
     <param-name>com.sun.jersey.config.property.packages</param-name>
     <param-value>path.to.my.class</param-value>
   </init-param>
   <init-param>
            <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
            <param-value>true</param-value>
      </init-param>
   <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
   <servlet-name>Jersey REST Service</servlet-name>
   <url-pattern>/rest/*</url-pattern>
</servlet-mapping>

My resource class:

package path.to.my.class;

// imports

@Path("/myPathHere")
public class RestScimExtensions {

@Path("/ping")
@GET
@Produces(MediaType.APPLICATION_JSON)
public SomeClass ping() { ... }

Any help is appreciated.
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2. Re: The ResourceConfig instance does not contain any root resource classes.

luiz_gustavo Aug 11, 2014 4:58 PM (in response to luiz_gustavo)

Nicolas,

I could make it work in JBoss 6.

I had excluded asm from one of the dependencies, because JBoss already has it, but it was one fo the problems.

This is my final configuration for the jersey dependencies:

<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.17.1</version>
</dependency>

<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.17.1</version>

<exclusions>
<exclusion>
<groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-impl</artifactId>
</exclusion>
</exclusions>

</dependency>

<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>1.17.1</version>
</dependency>

<dependency>
     <groupId>com.sun.jersey</groupId>
     <artifactId>jersey-servlet</artifactId>
     <version>1.17.1</version>
</dependency>

I had to also remove the com.sun.jersey.config.property.packages parameter from web.xml, and include some context-param.

Here's my final web.xml configuration:

...

<context-param>
     <param-name>resteasy.scan</param-name>
     <param-value>false</param-value>
</context-param>
<context-param>
     <param-name>resteasy.scan.resources</param-name>
     <param-value>false</param-value>
</context-param>
<context-param>
     <param-name>resteasy.scan.providers</param-name>
     <param-value>false</param-value>
</context-param>

...

<servlet>
   <servlet-name>Jersey REST Service</servlet-name>
   <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
   <init-param>
            <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
            <param-value>true</param-value>
      </init-param>
   <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
   <servlet-name>Jersey REST Service</servlet-name>
   <url-pattern>/rest/*</url-pattern>
</servlet-mapping>

I found a tip on this post: http://stackoverflow.com/questions/4412147/the-resourceconfig-instance-does-not-contain-any-root-resource-classes

Cheers!
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3. Re: The ResourceConfig instance does not contain any root resource classes.

guillaume.clement Mar 21, 2015 3:49 PM (in response to luiz_gustavo)

Thanks for this! Same issue on WildFly 8.x using Jersey 1.18.1. The web.xml changes is all I was missing.
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