Spring Bean using Xml File

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                                            Index

      1. Xml File Content
     2. Usage of Bean
     3. Bean Class



Project structure is:

                SpringBeanExample
                      --src/main/java
                              --com.example.stringexample.xml.hello
                                       * App.java
                                       * HelloBean.java
                        --src/main/resources
                                 *spring-config.xml




1. Xml File Content( spring-confix.xml )

This file defines bean.

<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-2.5.xsd">

     <bean id="helloBean2" class="com.example.springexample.xml.hello.HelloBean" />
</beans>


2. Usage of  Bean

Create a context object using xml file. Then get bean and call bean method.  

package com.example.springexample.xml.hello;

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

public class App {

    public static void main(String[] args) {
         ApplicationContext context = 
              new ClassPathXmlApplicationContext("spring-config.xml");
  
         HelloBean bean = (HelloBean) context.getBean("helloBean2");
         bean.setValue("bean value");
  
         bean.printValue();
    }

}




3. Bean Class
  
package com.example.springexample.xml.hello;

public class HelloBean {

     private String value;

     public void setValue(String value) {
          this.value = value;
     }
 
     public void printValue(){
          System.out.println("value: " + value);
     }
 
}