程序包 cn.taketoday.context.aware

接口 ResourceLoaderAware

所有超级接口:
Aware
所有已知实现类:
AutoConfigurationImportSelector, ClassPathBeanDefinitionScanner, ClassPathScanningCandidateComponentProvider, ClassPathScanningComponentProvider, ImportAutoConfigurationImportSelector, ReloadableResourceBundleMessageSource, ScriptFactoryPostProcessor
public interface ResourceLoaderAware extends Aware
Interface to be implemented by any object that wishes to be notified of the ResourceLoader (typically the ApplicationContext) that it runs in. This is an alternative to a full ApplicationContext dependency via the ApplicationContextAware interface.

Note that Resource dependencies can also be exposed as bean properties of type Resource or Resource[], populated via Strings with automatic type conversion by the bean factory. This removes the need for implementing any callback interface just for the purpose of accessing specific file resources.

You typically need a ResourceLoader when your application object has to access a variety of file resources whose names are calculated. A good strategy is to make the object use a DefaultResourceLoader but still implement ResourceLoaderAware to allow for overriding when running in an ApplicationContext.

A passed-in ResourceLoader can also be checked for the PatternResourceLoader interface and cast accordingly, in order to resolve resource patterns into arrays of Resource objects. This will always work when running in an ApplicationContext (since the context interface extends the ResourcePatternResolver interface). Use a PathMatchingPatternResourceLoader as default; see also the ResourcePatternUtils.getResourcePatternResolver method.

As an alternative to a ResourcePatternResolver dependency, consider exposing bean properties of type Resource[] array, populated via pattern Strings with automatic type conversion by the bean factory at binding time.

从以下版本开始:
4.0
作者:
Juergen Hoeller, Chris Beams, TODAY 2021/10/7 17:04
另请参阅:

  • 方法概要

    修饰符和类型
    方法
    说明
    void
    setResourceLoader(cn.taketoday.core.io.ResourceLoader resourceLoader)
    Set the ResourceLoader that this object runs in.

  • 方法详细资料

    • setResourceLoader

      void setResourceLoader(cn.taketoday.core.io.ResourceLoader resourceLoader)
      Set the ResourceLoader that this object runs in.

      This might be a ResourcePatternResolver, which can be checked through instanceof ResourcePatternResolver. See also the ResourcePatternUtils.getResourcePatternResolver method.

      Invoked after population of normal bean properties but before an init callback like InitializingBean's afterPropertiesSet or a custom init-method. Invoked before ApplicationContextAware's setApplicationContext.

      参数:
      resourceLoader - the ResourceLoader object to be used by this object
      另请参阅:
      • PatternResourceLoader
      • PatternResourceLoader.fromResourceLoader(cn.taketoday.core.io.ResourceLoader)