Spring IOC容器Bean注解创建对象组件扫描

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       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">
    <!--开启组件扫描-->
    <context:component-scan base-package="com.pingguo.spring5.dao"></context:component-scan>
</beans>

<context:component-scan base-package="com.pingguo.spring5.dao, com.pingguo.spring5.service"></context:component-scan>

<context:component-scan base-package="com.pingguo.spring5"></context:component-scan>

package com.pingguo.spring5.service;
import org.springframework.stereotype.Component;
@Component(value = "userService")
public class UserService {
    public void add() {
        System.out.println("service add() ... ...");
    }
}

package com.pingguo.spring5.testdemo;
import com.pingguo.spring5.service.UserService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestService {
    @Test
    public void testService() {
        ApplicationContext context
                = new ClassPathXmlApplicationContext("bean1.xml");
        UserService userService = context.getBean("userService", UserService.class);
        System.out.println(userService);
        userService.add();
    }
}

com.pingguo.spring5.service.UserService@60611244
service add() ... ...
Process finished with exit code 0

<!--开启组件扫描-->
<context:component-scan base-package="com.pingguo.spring5"></context:component-scan>

<context:component-scan base-package="com.pingguo.spring5" use-default-filters="false">
    <context:include-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan>

<context:component-scan base-package="com.pingguo.spring5" use-default-filters="false">
    <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan>