Difference between ApplicationContext and beanfactory (MS)

1. In terms of inheritance ,BeanFactory  yes   Of Parent class .BeanFactory It just provides Basic operation Bean Methods ,ApplicationContext In addition to having the basic operations of the parent class , It also provides Own unique functions .

2. In terms of performance ,ApplicationContext yes One-time loading And initialize all Bean object , however BeanFactory yes Which one do you need Bean Just to go Load which Bean.

 ApplicationContext Is in At the time of creation It'll take all of bean initialization , for the first time Use bean When fast , Startup is slow , But it may cause Waste of resources .BeanFactory Don't waste Any resources , First load bean Compare slow .

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

/**
 * @program: first-spring
 * @description:   adopt ApplicationContext To get the object 
 * @author: DRY
 * @create: 2022-07-03 12:47
 **/
public class App {
    public static void main(String[] args) {
        //1.  Get the context object first 
        ApplicationContext context =
                new ClassPathXmlApplicationContext("spring-config.xml");
        //2.  from spring Get... From context object bean
        User user = (User)context.getBean("user");
        //3.  Use object ( May not be used )
        user.sayHi(" Zhang Dan ");

    }
}

 

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

/**
 * @program: first-spring
 * @description:   adopt BeanFactory  To get spring Context object 
 * @author: DRY
 * @create: 2022-07-03 13:06
 **/
public class App2 {
    public static void main(String[] args) {
        //1. First get BeanFactory To get the object 
        BeanFactory beanFactory = new XmlBeanFactory(new ClassPathResource("spring-config.xml"));
        //2.  obtain bean
        User user = (User) beanFactory.getBean("user");
        //3.  Use bean
        user.sayHi(" Li Si ");
    }
}

<?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.xsd">
    <!--  Indicates that a bean Object store to spring in （ There can be multiple bean label ）-->
    <bean id="user" class="beans.User"></bean>
</beans>

 

  these two items. user Must remain the same .