上通过Spring @Value注解

Question

注入的原始奇怪的例外，我对试图通过注入春天@Value注解（Spring版本3.2.13）INT原始奇怪的错误。简短描述：Spring试图注入原始类型（int在我的情况下）而不是原始本身的bean。

• 我有属性文件 “myProps.properties” 财产扫描路径上

  number.of.search.log.events.in.queue=4 
  

• 配置类内容

  @Configuration 
  @ComponentScan(basePackages = { 
       "com.search.log" 
  }) 
  @PropertySource("classpath:myProps.properties") 
  @EnableAspectJAutoProxy 
  public class SearchLogConfiguration { 
  
      @Bean 
      public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() { 
       return new PropertySourcesPlaceholderConfigurer(); 
      } 
  
  } 
  

• 方面的基础原始应注射

  @Aspect 
  @Component 
  public class SearchLogAspectHandler { 
  
      @Value("${number.of.search.log.events.in.queue:2}") 
      public int numberOfSearchLogEventsInQueue; 
  ... 
  } 
  

每次在应用程序启动，我得到这个异常：

Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public int numberOfSearchLogEventsInQueue; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [int] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Value(value=${number.of.search.log.events.in.queue})} 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:298) 

元也不能注入到其他豆类为好。

问：请帮助找出为什么春天不能注入原始的，而是试图注入类型的豆[INT]并不能找到一个。

Answer 1

变化@PropertySource("classpath:applicationConfig.properties")到@PropertySource("classpath:myProps.properties")或使用@PropertySources注解。