Spring context:component-scan中使用context:include-filter和context:exclude-filter

XML:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans"

    xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util"

    xmlns:context="http://www.springframework.org/schema/context"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd

        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">

    <context:component-scan base-package="com.stono.sprtest">

        <context:include-filter type="assignable" expression="com.stono.sprtest.InstrumentI" />

        <context:exclude-filter type="annotation" expression="com.stono.sprtest.SkipIt"/>

    </context:component-scan>

</beans>

AppBean:

package com.stono.sprtest;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class AppBeans7 {

    @SuppressWarnings("resource")

    public static void main(String[] args) {

        ApplicationContext context = new ClassPathXmlApplicationContext("appbeans7.xml");

        Singer2 singer2 = (Singer2) context.getBean("singer");

        System.out.println(singer2);

        // Object bean = context.getBean("cymbal"); // 已经把Cymbal排除了；

        // System.out.println(bean);

    }

}

Annotation:

package com.stono.sprtest;

public @interface SkipIt {

}

POJO:

package com.stono.sprtest;

@SkipIt

public class Cymbal implements InstrumentI {

}

package com.stono.sprtest;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.stereotype.Component;

@Component("singer")

public class Singer2 {

    @Autowired

    // @Component标注的类，其Id是camel-casing类名；两个Intrument接口实现类，必须指定其中的一个；

    @Qualifier("saxophone")

    private InstrumentI instrument;

    @Value("justValue2")

    private String name;

    @Override

    public String toString() {

        return "Singer2 [instrument=" + instrument + ", name=" + name + "]";

    }

}