spring IOC 使用list数组注入

一个接口和两个接口实现类

package com.imooc.beanannotation.multibean;

public interface BeanInterface {

}

实现类1

package com.imooc.beanannotation.multibean;

import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

@Order(2)
@Component
public class BeanImplOne implements BeanInterface {

}

实现类2

package com.imooc.beanannotation.multibean;

import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

@Order(1)
@Component
public class BeanImplTwo implements BeanInterface {

}

xml文件

<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" >

        <context:component-scan base-package="com.imooc.beanannotation">context:component-scan>

 beans>

package com.imooc.beanannotation.multibean;

import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

@Component
public class BeanInvoker {
    //让bean的两个接口实现类注入到list和map中
    @Autowired
    private List list;

    @Autowired
    private Map map;

    @Autowired
    //因为有两个两个接口实现类，所以要指定一个，不然会报错
     @Qualifier("beanImplTwo")
    private BeanInterface beanInterface;

    public void say() {
        if (null != list && 0 != list.size()) {
            System.out.println("list...");
            for (BeanInterface bean : list) {
                System.out.println(bean.getClass().getName());
            }
        } else {
            System.out.println("List list is null !!!!!!!!!!");
        }

        System.out.println();

        if (null != map && 0 != map.size()) {
            System.out.println("map...");
            for (Map.Entry entry : map.entrySet()) {
                System.out.println(entry.getKey() + "      " + entry.getValue().getClass().getName());
            }
        } else {
            System.out.println("Map map is null !!!!!!!!!!");
        }

        System.out.println();
        if (null != beanInterface) {
            System.out.println(beanInterface.getClass().getName());
        } else {
            System.out.println("beanInterface is null...");
        }


    }

}

package com.imooc.test.beanannotation;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.BlockJUnit4ClassRunner;

import com.imooc.beanannotation.injection.service.InjectionService;
import com.imooc.beanannotation.multibean.BeanInvoker;
import com.imooc.test.base.UnitTestBase;

@RunWith(BlockJUnit4ClassRunner.class)
public class TestInjection extends UnitTestBase {

    public TestInjection() {
        super("classpath:spring-beanannotation.xml");
    }

    /*
    @Test
    public void testAutowired() {
        InjectionService service = super.getBean("injectionServiceImpl");
        service.save("This is autowired.");
    }
    */
    @Test
    public void testMultiBean() {
        BeanInvoker invoker = super.getBean("beanInvoker");
        invoker.say();
    }

}