Hello world application in spring using xml bean configuration.

1. Download the spring3.0 jars from following location.

 http://s3.amazonaws.com/dist.springframework.org/release/SPR/spring-framework-3.0.6.RELEASE-with-docs.zip

2. Create a new Java project and include the following jars into your java build path. 

1.   org.springframework.aop-3.0.6.RELEASE.jar

2.   org.springframework.asm-3.0.6.RELEASE.jar

3.   org.springframework.aspects-3.0.6.RELEASE.jar

4.   org.springframework.beans-3.0.6.RELEASE.jar

5.   org.springframework.context-3.0.6.RELEASE.jar

6.   org.springframework.context.support-3.0.6.RELEASE.jar

7.   org.springframework.core-3.0.6.RELEASE.jar

8.   org.springframework.expression-3.0.6.RELEASE.jar

9.   org.springframework.instrument-3.0.6.RELEASE.jar

10. org.springframework.instrument.tomcat-3.0.6.RELEASE.jar

11. org.springframework.jdbc-3.0.6.RELEASE.jar

12. org.springframework.jms-3.0.6.RELEASE.jar

13. org.springframework.orm-3.0.6.RELEASE.jar

14. org.springframework.oxm-3.0.6.RELEASE.jar

15. org.springframework.spring-library-3.0.6.RELEASE.libd

16. org.springframework.test-3.0.6.RELEASE.jar

17. org.springframework.transaction-3.0.6.RELEASE.jar

18. org.springframework.web-3.0.6.RELEASE.jar

19. org.springframework.web.portlet-3.0.6.RELEASE.jar

20. org.springframework.web.servlet-3.0.6.RELEASE.jar

21. org.springframework.web.struts-3.0.6.RELEASE.jar

All the jars are present in spring-framework-3.0.6.RELEASE\dist folder

3. Create a new HelloWorldBean and include the following code.

package com.study.bean;

public class HelloWorldBean {

      private String message;

      public HelloWorldBean(){

           

      }

      public HelloWorldBean(String message){

            this.message = message;

      }

     

      public void setMessage(String message){

            this.message = message;

      }

      public String getMessgae(){

            return message;

      }

}

4. Create a new main class and include the following code.

                 

package com.bean.execution;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.beans.factory.xml.XmlBeanFactory;

import org.springframework.core.io.ClassPathResource

import com.study.bean.HelloWorldBean;

public class HelloWorldExecution {

public static void main(String args[]){

         BeanFactory factory = new XmlBeanFactory(new ClassPathResource("BeanConfig.xml"));

         HelloWorldBean helloWorldBean = (HelloWorldBean)factory.getBean("HelloWorld");

         System.out.println(helloWorldBean.getMessgae());

         helloWorldBean.setMessage("Modified message");

         System.out.println(helloWorldBean.getMessgae());

   }

}

5. Create a BeanConfig xml file inside the src folder and include the following code.

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

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

   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">

   <bean id="HelloWorld" class="com.study.bean.HelloWorldBean">

         <property name="message">

               <value>Hello World...!</value>

         </property>

   </bean>

</beans>

6. Execute the HelloWorldExecution main method. 

    I got the following errors.

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.<init>(DefaultSingletonBeanRegistry.java:83)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.<init>(FactoryBeanRegistrySupport.java:43)
    at org.springframework.beans.factory.support.AbstractBeanFactory.<init>(AbstractBeanFactory.java:174)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.<init>(AbstractAutowireCapableBeanFactory.java:154)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.<init>(AbstractAutowireCapableBeanFactory.java:165)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.<init>(DefaultListableBeanFactory.java:158)
    at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:72)
    at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:61)
    at com.bean.execution.HelloWorldExecution.main(HelloWorldExecution.java:9)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    ... 9 more

7. For resolving this issue, I download the Apache common logging jar from following location and I added the "commons-logging-1.1.1.jar" into my java build path.

      http://apache.mirrors.pair.com//commons/logging/binaries/commons-logging-1.1.1-bin.zip

      Now execute the HelloWorldMain class.

    The result of the application is

      Nov 30, 2011 12:33:12 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [BeanConfig.xml]
Hello World...!
Modified message