using registerShutdownHook() in the Spring Framework

Question

I am following this tutorial online to the letter. http://www.tutorialspoint.com/spring/spring_bean_life_cycle.htm

But I get the errors when using Eclipse when I get to

Answer 1

You should use AbstractApplicationContext instead of ApplicationContext according to the spring documentation http://docs.spring.io/spring/docs/3.0.x/spring-framework-reference/html/beans.html#beans-factory-nature

import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public final class Boot {

 public static void main(final String[] args) throws Exception {
  AbstractApplicationContext ctx
      = new ClassPathXmlApplicationContext(new String []{"beans.xml"});

  // add a shutdown hook for the above context... 
  ctx.registerShutdownHook();

  // app runs here...

  // main method exits, hook is called prior to the app shutting down...
 }
}

Answer 2

I also got the same issue. I solved it using this way.

public static void main(String[] args) {
    ApplicationContext context = new ClassPathXmlApplicationContext("Bean.xml");
    HelloWorld obj =(HelloWorld)context.getBean("helloWorld");
    obj.getMessage();
    ((AbstractApplicationContext) context).registerShutdownHook();
}

Answer 3

Here is the code that worked for me.

package arjun;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;

public class Main {

    public static void main(String[] args) {

                AbstractApplicationContext context= new ClassPathXmlApplicationContext("spring.xml");
                context.registerShutdownHook();
                Triangle triangle=(Triangle) context.getBean("triangle");
                triangle.draw();
    }

}

Answer 4

//use this line,

((AbstractApplicationContext) ctx).registerShutdownHook();

Answer 5

Here's an updated solution:

import org.springframework.context.support.AbstractApplicationContext;  

((AbstractApplicationContext) appContext).registerShutdownHook();

Answer 6

For the error it seems that context is a object of ApplicationContext, whereas in tutorial it should be an object of AbstractApplicationContext

I am just guessing that you wrote this

public class MainApp {
   public static void main(String[] args) {

      ApplicationContext context = 
                          new ClassPathXmlApplicationContext("Beans.xml");//error here

      HelloWorld obj = (HelloWorld) context.getBean("helloWorld");
      obj.getMessage();
      context.registerShutdownHook();
   }
}