NoSuchBeanDefinitionException: 沒有“XInterceptor”類型的合格 bean

Question

我迷失在確保所有內容都明顯正確注釋的過程中。 當我運行使用此新代碼的服務時，出現以下錯誤。 攔截器不是已經帶有@Component 的bean，然后它需要成為bean 的所有東西都是bean 嗎？

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.demo...XInterceptor' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1654)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1213)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1167)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760)
    ... 88 common frames omitted

Process finished with exit code 1

我有一個someDecorator類，它使用我已更改的攔截器：

@Component 
@RequiredArgsConstructor 
public class someDecorator { 

    private final XInterceptor xInterceptor; 
    ...
    private void useTheInterceptor(...) {
      ...
      aList.add(xInterceptor) // and use it for later
    }
}

現在xInterceptor ，它使用另一個類YProvider

@Component
@RequiredArgsConstructor
public class xInterceptor {

    private final YProvider yProvider;

    public ClientHttpResponse intercept(String str, ...) throws IOException {

        Consumer<String> loggingConsumer = yProvider.getLoggingLevel(str);
        // ... use the consumer 
    }

YProvider是它變得有趣的地方，它有兩個值。 ZProperties是一個配置類和一個消費者映射。

@RequiredArgsConstructor
public class YProvider {

    private final ZProperties zProperties;
    private final Map<String, Consumer<String>> consumers;

    public Consumer<String> getLoggingLevel(String str) {
       // gets a single consumer from zProperties.getExampleMap ...
}

ZProperties只是從application.yml文件中捕獲地圖：

@Configuration
@ConfigurationProperties(prefix = "some-config")
@EnableConfigurationProperties
@Getter
@Setter
public class ZProperties {
    private Map<String, String> exampleMap;
}

現在要在YProvider填充consumers映射並設置YProvider ，我還有另一個配置ConsumerConfig

@Configuration
public class ConsumerConfig {

    @Bean
    public YProvider yProvider(ZProperties zProperties) {
        return new YProvider(zProperties, exmapleMapToConsumerConfiguration());
    }

    public Map<String, Consumer<String>> exmapleMapToConsumerConfiguration() {
        Map<String, Consumer<String>> exmapleMapToConsumerMap = new ConcurrentHashMap<>();
        // add stuff to map

        return exmapleMapToConsumerMap;
    }
}

Answer 1

這可能是因為您沒有在配置文件中將 XInterceptor 作為 Bean 提供。

嘗試將其添加到您的 ConsumerConfig 類中。

    @Bean
    public XInterceptor getXInterceptor(){
     return new XInterceptor();
    }

Answer 2

由於我將這些文件放在不同的包中，因此我必須添加@ComponentScan以及 Intercepter+Provider 所在位置的包名稱和配置文件所在位置的包。