Apache CXF Helpful materials for NewBie / Because org.springframework.beans.factory.BeanCreationException: Error creating bean with name

[Sumit Arora]

Dear All,

I have recently started the development of Restful web services with Apache
CXF/Spring. Its a little bit difficult for me to configure the requisite
config files even for a *HelloWorld Program*.

*Here is my Dir Structure*

  src/main/java/com.esumit.all/SimpleQAImpl.Java
  resources - empty
  webapp/WEB-INF/
    -- applicationContext.xml
    -- web.xml
 index.jsp

*Content of SimpleQAImpl.Java*

package com.esumit.all;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import java.util.List;
import org.springframework.stereotype.Service;
/** * Created by eSumit on 10/9/15. */

@Service
@Path("/simpleqa")
public class SimpleQAImpl {
   @GET
   @Produces(MediaType.APPLICATION_JSON)
   public String getText() {
       return "Sumit Arora";
   }
}

*Content of applicationContext.xml*

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

<beans xmlns="http://www.springframework.org/schema/beans";

       xmlns:context="http://www.springframework.org/schema/context";
       xmlns:jaxrs="http://cxf.apache.org/jaxrs"; xmlns:cxf="
http://cxf.apache.org/core";

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";

       xsi:schemaLocation="
                        http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd

                        http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd

                        http://cxf.apache.org/jaxrs
http://cxf.apache.org/schemas/jaxrs.xsd

                        http://cxf.apache.org/core
http://cxf.apache.org/schemas/core.xsd";>


    <context:component-scan base-package="com.esumit.all" />


    <jaxrs:server address="/simpleqa" id="SimpleQAImpl">



    </jaxrs:server>

    <bean class="com.esumit.all.SimpleQAImpl" id="simple">

    </bean>


</beans>

*Content of Web.xml*


<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd"; >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

    <listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>CXFServlet</servlet-name>

<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>CXFServlet</servlet-name>
        <url-pattern>/simpleqa/*</url-pattern>
    </servlet-mapping>
</web-app>

org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'SimpleQAImpl': Invocation of init method failed; nested
exception is org.apache.cxf.service.factory.ServiceConstructionException

*Logs *

Oct 10, 2015 11:44:32 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Oct 10, 2015 11:44:32 AM org.apache.catalina.core.StandardService
startInternal
INFO: Starting service Tomcat
Oct 10, 2015 11:44:32 AM org.apache.catalina.core.StandardEngine
startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47
Oct 10, 2015 11:44:34 AM org.apache.catalina.core.ApplicationContext log
INFO: No Spring WebApplicationInitializer types detected on classpath
Oct 10, 2015 11:44:34 AM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
Oct 10, 2015 11:44:34 AM org.springframework.web.context.ContextLoader
initWebApplicationContext
INFO: Root WebApplicationContext: initialization started
Oct 10, 2015 11:44:34 AM
org.springframework.context.support.AbstractApplicationContext
prepareRefresh
INFO: Refreshing Root WebApplicationContext: startup date [Sat Oct 10
11:44:34 IST 2015]; root of context hierarchy
Oct 10, 2015 11:44:34 AM
org.springframework.beans.factory.xml.XmlBeanDefinitionReader
loadBeanDefinitions
INFO: Loading XML bean definitions from ServletContext resource
[/WEB-INF/applicationContext.xml]
Oct 10, 2015 11:46:41 AM org.apache.cxf.jaxrs.AbstractJAXRSFactoryBean
checkResources
SEVERE: No resource classes found
Oct 10, 2015 12:19:01 PM org.springframework.web.context.ContextLoader
initWebApplicationContext
SEVERE: Context initialization failed
*org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'SimpleQAImpl': Invocation of init method failed; nested
exception is *org.apache.cxf.service.factory.ServiceConstructionException
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1553)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.b

---------------------------------

- I totally understand that this program is doing even basic mistakes, may
you please suggest me how to understand teh basic concepts and apply here
to make this even basic 'helloworld' program work ?

Questions -

1. Do we need to add the Spring ApplicationContext file ?

Thanks for everything,
'Sumit