spring-cloud-alibaba-starters/spring-alibaba-nacos-config/src/main/java/com/alibaba/cloud/nacos/annotation/NacosAnnotationProcessor.java [174:188]:
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			log.info("[Nacos Config] register {} listener on {} ", refreshTargetKey,
					bean);
			TargetRefreshable listener = null;
			if (org.springframework.util.StringUtils.hasText(key)) {
				listener = new NacosPropertiesKeyListener(bean, wrapArrayToSet(key)) {

					@Override
					public void configChanged(ConfigChangeEvent event) {
						try {
							ConfigChangeItem changeItem = event.getChangeItem(key);
							String newConfig = changeItem == null ? null : changeItem.getNewValue();
							if (!org.springframework.util.StringUtils.hasText(newConfig)) {
								newConfig = defaultValue;
							}
							if (org.springframework.util.StringUtils.hasText(newConfig)) {
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spring-cloud-alibaba-starters/spring-alibaba-nacos-config/src/main/java/com/alibaba/cloud/nacos/annotation/NacosAnnotationProcessor.java [554:568]:
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			log.info("[Nacos Config] register {} listener on {} ", refreshTargetKey,
					bean);
			TargetRefreshable listener = null;
			if (org.springframework.util.StringUtils.hasText(key)) {
				listener = new NacosPropertiesKeyListener(bean, wrapArrayToSet(key)) {

					@Override
					public void configChanged(ConfigChangeEvent event) {
						try {
							ConfigChangeItem changeItem = event.getChangeItem(key);
							String newConfig = changeItem == null ? null : changeItem.getNewValue();
							if (!org.springframework.util.StringUtils.hasText(newConfig)) {
								newConfig = defaultValue;
							}
							if (org.springframework.util.StringUtils.hasText(newConfig)) {
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