re: basic question on Spring framework

[Mark Curlette]

Hello,
I just try to learn the Spring framework , and I ran into an error message when I try to run a simple spring "helloWorld" application.
The error stated that "org.springframework.core.io.ClassPathResource cannot be cast to org.springframework.beans.factory.BeanFactory" which refer to this code in my program:

	  DefaultListableBeanFactory  beanFactory = new DefaultListableBeanFactory ((BeanFactory) new ClassPathResource("SpringHelloWorld.xml"));  

and the file SpringHelloWorld.xml is located in /Spring/src/SpringHelloWorld.xml

The complete program is as follow

package org.du;

import java.util.Map;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.util.Assert;

public class Spring3HelloWorldTest {

public static void main(String[] args) {

	  DefaultListableBeanFactory  beanFactory = new DefaultListableBeanFactory ((BeanFactory) new ClassPathResource("SpringHelloWorld.xml"));  
HelloWorld myBean = (HelloWorld) beanFactory
.getBean("Spring3HelloWorldBean");
myBean.sayhello();
}
} 

]<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<bean id="Spring3HelloWorldBean"
class="org.du.HelloWorld" />

</beans>

Please help me if you know what's going wrong.

Thnaks so much in advance.

Mark

[Mark Spritzler]

Let me save you much time.

If you are learning Spring new, then you will never ever use that type of code. That is over 5 years old style of Spring coding. I recommend finding Spring materials that are up to date.

You will use a class that implements ApplicationContext instead.

Mark

[Mark Curlette]

Thank you so much Mark for showing me the right direction.

Yes, I followed your advice to get new text material on Spring , and changed my code to ApplicationContext and it worked wonderfully.

   context =  new ClassPathXmlApplicationContext("Beans.xml");

      HelloWorld obj = (HelloWorld) context.getBean("helloWorld");

Thanks again and have a great day.