java - 注释@ConditionalOnMissingBean 在测试中不匹配

Question

我有一个接口(interface)的两个实现 - default 和 dev。我将 @ConditionalOnProperty 用于默认实现，将 @Profile 和 @ConditionalOnMissingBean 组合用于开发实现。

@Service
@ConditionalOnProperty(prefix = "keystore", value = "file")
public class DefaultKeyStoreService implements KeyStoreService {

@Service
@Profile("dev")
@ConditionalOnMissingBean(KeyStoreService.class)
public class DevKeyStoreService implements KeyStoreService {

现在，问题出在 DevKeyStoreService 的测试 DevKeyStoreServiceTest 中。我有这样的配置:

@SpringBootTest(
    classes = {DevKeyStoreService.class},
    properties = {"keystore.file="}
)
@RunWith(SpringRunner.class)
@ActiveProfiles("dev")
public class DevKeyStoreServiceTest {

    @Autowired
    private DevKeyStoreService tested;

    @Test
    public void testPrivateKey() {
    } //... etc.

结果是:

Negative matches:
-----------------
DevKeyStoreService:
   Did not match:
      - @ConditionalOnMissingBean (types: service.crypto.KeyStoreService; SearchStrategy: all) found bean 'devKeyStoreService' (OnBeanCondition)

和典型的 org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'service.crypto.DevKeyStoreServiceTest'...。

如何配置测试类才能运行它？

Answer 1

好的，我明白了。

具有值 @ConditionalOnMissingBean(KeyStoreService.class) 的注释试图仅查找具体实例，KeyStoreService 接口(interface)不是。这样，它找不到任何东西。

当我改为使用带有类型的注解时，它就像一个魅力:@ConditionalOnMissingBean(type = "KeyStoreService")。