import org.springframework.beans.factory.support.AbstractBeanDefinitionReader; //导入依赖的package包/类
private void loadBeanDefinitionsFromImportedResources(final Map<String, Class<? extends BeanDefinitionReader>> importedResources) {

    final Map<Class<?>, BeanDefinitionReader> readerInstanceCache = new HashMap<Class<?>, BeanDefinitionReader>();
    for (final Map.Entry<String, Class<? extends BeanDefinitionReader>> entry : importedResources.entrySet()) {
      final String resource = entry.getKey();
      final Class<? extends BeanDefinitionReader> readerClass = entry.getValue();
      if (!readerInstanceCache.containsKey(readerClass)) {
        try {
          // Instantiate the specified BeanDefinitionReader
          final BeanDefinitionReader readerInstance = readerClass.getConstructor(BeanDefinitionRegistry.class).newInstance(this.registry);
          // Delegate the current ResourceLoader to it if possible
          if (readerInstance instanceof AbstractBeanDefinitionReader) {
            final AbstractBeanDefinitionReader abdr = ((AbstractBeanDefinitionReader) readerInstance);
            abdr.setResourceLoader(this.resourceLoader);
            abdr.setEnvironment(this.environment);
          }
          readerInstanceCache.put(readerClass, readerInstance);
        } catch (final Exception ex) {
          throw new IllegalStateException("Could not instantiate BeanDefinitionReader class [" + readerClass.getName() + "]");
        }
      }
      final BeanDefinitionReader reader = readerInstanceCache.get(readerClass);
      // TODO SPR-6310: qualify relative path locations as done in AbstractContextLoader.modifyLocations
      reader.loadBeanDefinitions(resource);
    }
  }
 

import org.springframework.beans.factory.support.AbstractBeanDefinitionReader; //导入依赖的package包/类
private void loadBeanDefinitionsFromImportedResources(
		Map<String, Class<? extends BeanDefinitionReader>> importedResources) {

	Map<Class<?>, BeanDefinitionReader> readerInstanceCache = new HashMap<Class<?>, BeanDefinitionReader>();
	for (Map.Entry<String, Class<? extends BeanDefinitionReader>> entry : importedResources.entrySet()) {
		String resource = entry.getKey();
		Class<? extends BeanDefinitionReader> readerClass = entry.getValue();
		if (!readerInstanceCache.containsKey(readerClass)) {
			try {
				// Instantiate the specified BeanDefinitionReader
				BeanDefinitionReader readerInstance =
						readerClass.getConstructor(BeanDefinitionRegistry.class).newInstance(this.registry);
				// Delegate the current ResourceLoader to it if possible
				if (readerInstance instanceof AbstractBeanDefinitionReader) {
					AbstractBeanDefinitionReader abdr = ((AbstractBeanDefinitionReader) readerInstance);
					abdr.setResourceLoader(this.resourceLoader);
					abdr.setEnvironment(this.environment);
				}
				readerInstanceCache.put(readerClass, readerInstance);
			}
			catch (Exception ex) {
				throw new IllegalStateException(
						"Could not instantiate BeanDefinitionReader class [" + readerClass.getName() + "]");
			}
		}
		BeanDefinitionReader reader = readerInstanceCache.get(readerClass);
		// TODO SPR-6310: qualify relative path locations as done in AbstractContextLoader.modifyLocations
		reader.loadBeanDefinitions(resource);
	}
}
 

import org.springframework.beans.factory.support.AbstractBeanDefinitionReader; //导入依赖的package包/类
private int loadBeanDefinitionsFromString(String beanDefinition) {
	AbstractBeanDefinitionReader beanDefinitionReader = new XmlBeanDefinitionReader(this.getRegistry());
	Resource resource = new ByteArrayResource(beanDefinition.getBytes());
	int count = beanDefinitionReader.loadBeanDefinitions(resource);

	return count;
}
 

import org.springframework.beans.factory.support.AbstractBeanDefinitionReader; //导入依赖的package包/类
@Override
protected void loadBeanDefinitions(UpdateableListableBeanFactory beanFactory) throws IOException, BeansException {
  AbstractBeanDefinitionReader beanDefinitionReader = new XmlBeanDefinitionReader(beanFactory);
  for (Resource resource : getConfigResources()) {
    if (resource instanceof MongoDbResource) {
       ((MongoDbResource) resource).loadBeanDefinitions(beanFactory);
 }
    else {
      beanDefinitionReader.loadBeanDefinitions(resource);
    }
  }
}
 

import org.springframework.beans.factory.support.AbstractBeanDefinitionReader; //导入依赖的package包/类
private void loadBeanDefinitionsFromImportedResources(
		Map<String, Class<? extends BeanDefinitionReader>> importedResources) {

	Map<Class<?>, BeanDefinitionReader> readerInstanceCache = new HashMap<Class<?>, BeanDefinitionReader>();

	for (Map.Entry<String, Class<? extends BeanDefinitionReader>> entry : importedResources.entrySet()) {
		String resource = entry.getKey();
		Class<? extends BeanDefinitionReader> readerClass = entry.getValue();

		// Default reader selection necessary?
		if (BeanDefinitionReader.class == readerClass) {
			if (StringUtils.endsWithIgnoreCase(resource, ".groovy")) {
				// When clearly asking for Groovy, that's what they'll get...
				readerClass = GroovyBeanDefinitionReader.class;
			}
			else {
				// Primarily ".xml" files but for any other extension as well
				readerClass = XmlBeanDefinitionReader.class;
			}
		}

		BeanDefinitionReader reader = readerInstanceCache.get(readerClass);
		if (reader == null) {
			try {
				// Instantiate the specified BeanDefinitionReader
				reader = readerClass.getConstructor(BeanDefinitionRegistry.class).newInstance(this.registry);
				// Delegate the current ResourceLoader to it if possible
				if (reader instanceof AbstractBeanDefinitionReader) {
					AbstractBeanDefinitionReader abdr = ((AbstractBeanDefinitionReader) reader);
					abdr.setResourceLoader(this.resourceLoader);
					abdr.setEnvironment(this.environment);
				}
				readerInstanceCache.put(readerClass, reader);
			}
			catch (Exception ex) {
				throw new IllegalStateException(
						"Could not instantiate BeanDefinitionReader class [" + readerClass.getName() + "]");
			}
		}

		// TODO SPR-6310: qualify relative path locations as done in AbstractContextLoader.modifyLocations
		reader.loadBeanDefinitions(resource);
	}
}