using ClassPathXmlApplicationContext to load beans

[Samanthi perera]

this is my interface

package com.aruna;

public interface Animal {
void eat();
}

this is my class

package com.aruna;

public class Dog implements Animal{

	@Override
	public void eat() {
		System.out.println("Dog eattttttttttt");		
	}

	
}

this is my main class

package com.aruna;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;

public class MainApp {

	
	public static void main(String[] args) {
		BeanFactory factory =new XmlBeanFactory(new FileSystemResource("CarApp.xml"));
		Animal myanimal=(Dog)factory.getBean("kalu");
		
		
		
		myanimal.eat();
	}

}

this is my xml file

<?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-2.0.xsd">

<bean id="kalu" class="com.aruna.Dog"></bean>

</beans>

this works fine

i need to load beans using ApplicationContext Container.

i change my main class to this

ApplicationContext factory =new ClassPathXmlApplicationContext("CarApp.xml");
		
		Animal myanimal=(Dog)factory.getBean("kalu");		
		myanimal.eat();

my CarApp.xml is in Project folder.

it is not working

here is error

Jul 3, 2010 5:57:01 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1ed2ae8: display name [org.springframework.context.support.ClassPathXmlApplicationContext@1ed2ae8]; startup date [Sat Jul 03 17:57:01 IST 2010]; root of context hierarchy
Jul 3, 2010 5:57:01 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [CarApp.xml]
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [CarApp.xml]; nested exception is java.io.FileNotFoundException: class path resource [CarApp.xml] cannot be opened because it does not exist
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:349)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:310)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:212)
	at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:113)
	at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:80)
	at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:123)
	at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:422)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at com.aruna.MainApp.main(MainApp.java:15)
Caused by: java.io.FileNotFoundException: class path resource [CarApp.xml] cannot be opened because it does not exist
	at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:143)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)
	... 13 more

[David Newton]

Is the config file on the classpath? It needs to be; it's not.

[Samanthi perera]

I added xml file to src folder.now it is working.


1)anyway what are the other places consider as a classpath without src folder ?

[David Newton]

Glad you worked it out :)

The "default" classpath depends on the environment you're running in and how you're running the application.

[Samanthi perera]

I am using Eclips IDE and running as a Java application

[David Newton]

Then the classpath is determined by your runtime configuration, which in turn is influenced by how your project is configured. For example, if you have multiple source directories, they'll all get compiled to the configured output directory (there are several ways to configure output directories).

[Samanthi perera]

lets imagin i don't like to put my xml file to src folder.
so i need it to put Diretly to project folder.

1)if i did that way how can i use ClassPathXmlApplicationContext to load beans?
2)or is there any other best way to do this other than using src folder?

[David Newton]

As long as the file is on the classpath it doesn't matter where it is. For example, a Maven application would put config files in src/main/resource. So you could create another source directory and put it there. Putting it at the root level of your project itself, in my opinion, is a bad idea.