Spring – init-method and destroy-method example (2011-04-20)
In Spring, it’s encourage to use init-method and destroy-method as attribute in bean configuration file for bean to perform certain actions upon initialization and destruction.
package com.mkyong.customer.services;
public class CustomerService
{
String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public void initIt() throws Exception {
System.out.println("Init method after properties are set : " + message);
}
public void cleanUp() throws Exception {
System.out.println("Spring Container is destroy! Customer clean up");
}
}
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Bean configuration file (Spring-Customer.xml), specify the method you want to call in init-method and destroy-method attribute.
<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="customerService" class="com.mkyong.customer.services.CustomerService"
init-method="initIt" destroy-method="cleanUp">
<property name="message" value="i'm property message" />
</bean>
</beans>
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Run It
package com.mkyong.common;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.mkyong.customer.services.CustomerService;
public class App
{
public static void main( String[] args )
{
ConfigurableApplicationContext context =
new ClassPathXmlApplicationContext(new String[] {"Spring-Customer.xml"});
CustomerService cust = (CustomerService)context.getBean("customerService");
System.out.println(cust);
context.close();
}
}
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