Spring多对象引入方法

@Configuration
public class DataSourceConfig {
  @Bean(name = "test01DataSource")
  @Primary
  @ConfigurationProperties(prefix = "spring.datasource.test01")
  public DataSource getTest01DataSource() {
    return DataSourceBuilder.create().build();
  }
  @Bean(name = "test02DataSource")
  @ConfigurationProperties(prefix = "spring.datasource.test02")
  public DataSource test02DataSource() {
    return DataSourceBuilder.create().build();
  }
}

@Autowired
ApplicationContext applicationContext;
@Test
public void testDataSourceHashCode() {
  System.out.println(applicationContext.getBean(DataSource.class).hashCode());
  System.out.println((applicationContext.getBean("test01DataSource")).hashCode());
  System.out.println((applicationContext.getBean("test02DataSource")).hashCode());
}

// 创建接口
public interface IBeanService {
  public void printInfo();
}
//创建实例01, 并且添加上@Primary注解, 表名默认使用这个类
@Service(value = "bean01")
@Primary
public class Bean01Service implements IBeanService {
  @Override
  public void printInfo() {
    System.out.println("This is bean 01");
  }
}
//创建实例02,
@Service(value = "bean02")
public class Bean02Service implements IBeanService {
  @Override
  public void printInfo() {
    System.out.println("This is bean 02");
  }
}
@RunWith(SpringRunner.class)
@SpringBootTest
public class IBeanServiceTest {
  @Autowired
  ApplicationContext applicationContext;
// create default bean.
  @Autowired
  IBeanService beanService;
  @Autowired
  @Qualifier("bean01")
  IBeanService bean01Service;
  @Autowired
  @Qualifier("bean02")
  IBeanService bean02Service;
  @Test
  public void printInfo() {
  // create bean01
    IBeanService bean01 = (IBeanService) applicationContext.getBean("bean01");
  // create bean02
    IBeanService bean02 = (IBeanService) applicationContext.getBean("bean02");
    bean01.printInfo();
    bean02.printInfo();
  // create default bean, and it is bean01
    applicationContext.getBean(IBeanService.class).printInfo();
  }
  @Test
  public void printInfoThroughAutowired() {
    beanService.printInfo();
    bean01Service.printInfo();
    bean02Service.printInfo();
  }
}

@Autowired
IBeanService beanService;

@Autowired
@Qualifier("bean02")
IBeanService bean02Service;