使用泛型作为自动连接（Autowiring）的限定符

Hunyuan 7b 中英对照 Using Generics as Autowiring Qualifiers

除了@Qualifier注解外，您还可以使用Java泛型类型作为一种隐式的限定形式。例如，假设您有以下配置：

Java

@Configuration
public class MyConfiguration {

	@Bean
	public StringStore stringStore() {
		return new StringStore();
	}

	@Bean
	public IntegerStore integerStore() {
		return new IntegerStore();
	}
}

Kotlin

@Configuration
class MyConfiguration {

	@Bean
	fun stringStore() = StringStore()

	@Bean
	fun integerStore() = IntegerStore()
}

假设前面的bean实现了一个泛型接口（即Store<String>和Store<Integer>），你可以使用@Autowire来标注Store接口，并且该泛型会作为限定符被使用，如下例所示：

Java

@Autowired
private Store<String> s1; // <String> qualifier, injects the stringStore bean

@Autowired
private Store<Integer> s2; // <Integer> qualifier, injects the integerStore bean

Kotlin

@Autowired
private lateinit var s1: Store<String> // <String> qualifier, injects the stringStore bean

@Autowired
private lateinit var s2: Store<Integer> // <Integer> qualifier, injects the integerStore bean

泛型限定符在自动装配列表、Map实例和数组时也同样适用。以下示例展示了如何自动装配一个泛型的List：

Java

// Inject all Store beans as long as they have an <Integer> generic
// Store<String> beans will not appear in this list
@Autowired
private List<Store<Integer>> s;

Kotlin

// Inject all Store beans as long as they have an <Integer> generic
// Store<String> beans will not appear in this list
@Autowired
private lateinit var s: List<Store<Integer>>