JBOSS throwing Exception when trying to Restfull Webservices using JAXRS - rest

Question

I have developed a sample RestEasy Hello World Example for my self assessment, but when i try to run this project using JBOSS7.0 i see a printed stack trace of error mentioned below:Please suggest me with possible solution or let me know if i have coded wrongly in the above mentioned xml and java files.
12:54:44,145 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/resteasy]] (MSC service thread 1-6) Exception sending context initialized event to listener instance of class org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap: java.lang.NoClassDefFoundError: javax/servlet/ServletContext
at org.scannotation.WarUrlFinder.findWebInfClassesPath(WarUrlFinder.java:56) [scannotation-1.0.3.jar:]
at org.jboss.resteasy.plugins.server.servlet.ListenerBootstrap.getScanningUrls(ListenerBootstrap.java:64) [resteasy-jaxrs-2.2.1.GA.jar:]
at org.jboss.resteasy.plugins.server.servlet.ConfigurationBootstrap.createDeployment(ConfigurationBootstrap.java:147) [resteasy-jaxrs-2.2.1.GA.jar:]
at org.jboss.resteasy.plugins.server.servlet.ListenerBootstrap.createDeployment(ListenerBootstrap.java:32) [resteasy-jaxrs-2.2.1.GA.jar:]
at org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap.contextInitialized(ResteasyBootstrap.java:27) [resteasy-jaxrs-2.2.1.GA.jar:]
at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3368) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3821) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]
at org.jboss.as.web.deployment.WebDeploymentService.start(WebDeploymentService.java:70) [jboss-as-web-7.0.0.Final.jar:7.0.0.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)
at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_18]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_18]
at java.lang.Thread.run(Thread.java:619) [:1.6.0_18]
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext from [Module "org.scannotation.scannotation:main" from local module loader #a9c09e (roots: D:\jboss-as-web-7.0.0.Final\modules)]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:191)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:358)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101)
12:54:44,175 ERROR [org.apache.catalina.core.StandardContext] (MSC service thread 1-6) Context [/resteasy] startup failed due to previous errors
12:54:44,183 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/resteasy]] (MSC service thread 1-6) Exception sending context destroyed event to listener instance of class org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap: java.lang.NullPointerException
at org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap.contextDestroyed(ResteasyBootstrap.java:37) [resteasy-jaxrs-2.2.1.GA.jar:]
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:3465) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]
at org.apache.catalina.core.StandardContext.stop(StandardContext.java:3970) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3888) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]
at org.jboss.as.web.deployment.WebDeploymentService.start(WebDeploymentService.java:70) [jboss-as-web-7.0.0.Final.jar:7.0.0.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)
at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_18]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_18]
at java.lang.Thread.run(Thread.java:619) [:1.6.0_18]
Following is the program i have written
Maven -> pom.xml
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
com.javacodegeeks
resteasy
0.0.1-SNAPSHOT
war
resteasy JEE5 Webapp
http://maven.apache.org
<repositories>
<repository>
<id>org.jboss.resteasy</id>
<url>http://repository.jboss.org/maven2/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>3.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxb-provider</artifactId>
<version>2.0-beta-2</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jettison-provider</artifactId>
<version>2.0-beta-2</version>
</dependency>
<dependency>
<groupId>org.jboss.spec.javax.servlet</groupId>
<artifactId>jboss-servlet-api_3.0_spec</artifactId>
<version>1.0.0.Final</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>1.5</source>
<target>1.5</target>
</configuration>
</plugin>
</plugins>
<finalName>resteasy</finalName>
</build>
</project>
web.xml
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Restful Web Application</display-name>
<!-- Auto scan REST service -->
<context-param>
<param-name>resteasy.scan</param-name>
<param-value>true</param-value>
</context-param>
<!-- this need same with resteasy servlet url-pattern -->
<context-param>
<param-name>resteasy.servlet.mapping.prefix</param-name>
<param-value>/rest</param-value>
</context-param>
<listener>
<listener-class>
org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
</listener-class>
</listener>
<servlet>
<servlet-name>resteasy-servlet</servlet-name>
<servlet-class>
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>resteasy-servlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
MessageDriven.java
package com.sandeep.resteasy;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
#Path("/message")
public class MessageDriven {
#GET
#Path("/{param}")
public Response printMessage(#PathParam("param") String msg) {
String result = "Restful example : " + msg;
return Response.status(200).entity(result).build();
}
}

Answer 1

You need to remove the auto-scanning context parameter.
<context-param>
<param-name>resteasy.scan</param-name>
<param-value>true</param-value>
</context-param>
JBoss AS7 does its own auto-scanning and adding the resteasy.scan context parameter will cause this error when running under AS7.