DisposableBeanAdapter.java 文件源码

/**
 * Check whether the given bean has destruction-aware post-processors applying to it.
 * @param bean the bean instance
 * @param postProcessors the post-processor candidates
 */
public static boolean hasApplicableProcessors(Object bean, List<BeanPostProcessor> postProcessors) {
    if (!CollectionUtils.isEmpty(postProcessors)) {
        for (BeanPostProcessor processor : postProcessors) {
            if (processor instanceof DestructionAwareBeanPostProcessor) {
                DestructionAwareBeanPostProcessor dabpp = (DestructionAwareBeanPostProcessor) processor;
                try {
                    if (dabpp.requiresDestruction(bean)) {
                        return true;
                    }
                }
                catch (AbstractMethodError err) {
                    // A pre-4.3 third-party DestructionAwareBeanPostProcessor...
                    // As of 5.0, we can let requiresDestruction be a Java 8 default method which returns true.
                    return true;
                }
            }
        }
    }
    return false;
}