component scan
File: context.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" 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 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <aop:aspectj-autoproxy /> <context:component-scan base-package="bean"> <context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/> </context:component-scan> </beans> File: Main.java import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import bean.Helper; import bean.HelperDemo; public class Main { public static void main(String[] args) throws Exception { ApplicationContext ac = new ClassPathXmlApplicationContext( "context.xml"); HelperDemo hd1 = (HelperDemo) ac.getBean("helperDemo"); hd1.someOperation(); System.out.println(hd1); HelperDemo hd2 = (HelperDemo) ac.getBean("helperDemo"); hd2.someOperation(); System.out.println(hd2); Helper helper = (Helper) ac.getBean("helper"); System.out.println(helper); } } File: Helper.java package bean; import org.springframework.beans.factory.config.BeanDefinition; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; @Component("helper") @Scope(BeanDefinition.SCOPE_PROTOTYPE) public class Helper { private int count; public void work() { this.count++; } @Override public String toString() { final StringBuilder sb = new StringBuilder(); sb.append("Helper"); sb.append("{count=").append(count); sb.append('}'); return sb.toString(); } } File: HelperDemo.java package bean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.config.BeanDefinition; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; @Component @Scope(BeanDefinition.SCOPE_PROTOTYPE) public class HelperDemo { @Autowired private Helper helper; public void setHelper(Helper helper) { this.helper = helper; } public void someOperation() { this.helper.work(); } @Override public String toString() { final StringBuilder sb = new StringBuilder(); sb.append("HelperDemo"); sb.append("{helper=").append(helper); sb.append('}'); return sb.toString(); } }