Spring 当一个接口多个实现时，怎么注入

package cn.lpe234.demo;

/**
 * Created by lpe234 on 2017/9/26.
 */
public interface Data {
    void out();
}

package cn.lpe234.demo;

import org.springframework.stereotype.Component;

/**
 * Created by lpe234 on 2017/9/26.
 */
@Service
public class AData implements Data {
    @Override
    public void out() {
        System.out.println("AData");
    }
}

package cn.lpe234.demo;

import org.springframework.stereotype.Component;

/**
 * Created by lpe234 on 2017/9/26.
 */
@Service
public class BData implements Data {
    @Override
    public void out() {
        System.out.println("BData");
    }
}

@Test
public void testData() {
    Data data1 = new Data() {
        @Override
        public void out() {
            System.out.println("new Data {}");
        }
    };
    Data data2 = new AData();
    Data data3 = new BData();

    data1.out();
    data2.out();
    data3.out();
}

// 
new Data {}
AData
BData

// 均使用 AData 的实现

@Autowired
@Qualifier("AData")
Data data;

@Resource(name = "AData")
Data getData;