1.导入依赖

        <dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.0.9.RELEASE</version></dependency>

2.写一个接口和实现

public interface dao {public void save();
}

public class impl implements dao {public void save() {System.out.println("saving");}public static void main(String[] args) {ApplicationContext applicationContext=new  ClassPathXmlApplicationContext("applicationContext.xml");impl i=(impl) applicationContext.getBean("impl");i.save();}
}

3.编写配置文件

<?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">
<bean id="impl" class="com.impl"></bean>
</beans>