Condition 'null != interceptors' is always 'true' (#357)

Co-authored-by: xingducai <836959451@qq.com>

CHANGELOG.md

@@ -10,7 +10,7 @@
 - [Feature:add restTemplate Report Polaris](https://github.com/Tencent/spring-cloud-tencent/pull/304)
 - [Update GitHub Actions workflow](https://github.com/Tencent/spring-cloud-tencent/pull/305)
 - [fix: use non-blocking call instead of blocking call](https://github.com/Tencent/spring-cloud-tencent/pull/309)
-- [fix:solve the chaos code problem on rejectTips](https://github.com/Tencent/spring-cloud-tencent/pull/283)
+- [solve the chaos code problem on rejectTips in 2021.0](https://github.com/Tencent/spring-cloud-tencent/pull/315)
 - [Fix config file format misspell](https://github.com/Tencent/spring-cloud-tencent/pull/321)
 - [Feature: Add instance metadata spi for registration](https://github.com/Tencent/spring-cloud-tencent/pull/324)
 - [Improve: Improve code style & Upgrade spring boot version with 2.6.9](https://github.com/Tencent/spring-cloud-tencent/pull/322)
@@ -19,4 +19,5 @@
 - [feat:Add GitHub action of codecov.yml and update junit of metadata.](https://github.com/Tencent/spring-cloud-tencent/pull/344)
 - [Feature: optimize static metadata manager](https://github.com/Tencent/spring-cloud-tencent/pull/346)
 - [fix: shutdown thread pool before the container closes](https://github.com/Tencent/spring-cloud-tencent/pull/355)
+- [rm code: Condition 'null != interceptors' is always 'true' ](https://github.com/Tencent/spring-cloud-tencent/pull/357)
 - [docs:update logo in README.](https://github.com/Tencent/spring-cloud-tencent/pull/360)

spring-cloud-starter-tencent-metadata-transfer/src/main/java/com/tencent/cloud/metadata/config/MetadataTransferAutoConfiguration.java

@@ -68,8 +68,10 @@ public class MetadataTransferAutoConfiguration {
 				DecodeTransferMetadataServletFilter decodeTransferMetadataServletFilter) {
 			FilterRegistrationBean<DecodeTransferMetadataServletFilter> filterRegistrationBean = new FilterRegistrationBean<>(
 					decodeTransferMetadataServletFilter);
-			filterRegistrationBean.setDispatcherTypes(ASYNC, ERROR, FORWARD, INCLUDE, REQUEST);
+			filterRegistrationBean.setDispatcherTypes(ASYNC, ERROR, FORWARD, INCLUDE,
-			filterRegistrationBean.setOrder(MetadataConstant.OrderConstant.WEB_FILTER_ORDER);
+					REQUEST);
+			filterRegistrationBean
+					.setOrder(MetadataConstant.OrderConstant.WEB_FILTER_ORDER);
 			return filterRegistrationBean;
 		}
 
@@ -140,29 +142,34 @@ public class MetadataTransferAutoConfiguration {
 		BeanPostProcessor encodeTransferMetadataRestTemplatePostProcessor(
 				EncodeTransferMedataRestTemplateInterceptor encodeTransferMedataRestTemplateInterceptor) {
 			// Coping with multiple bean injection scenarios
-			Map<String, RestTemplate> beans = this.context.getBeansOfType(RestTemplate.class);
+			Map<String, RestTemplate> beans = this.context
+					.getBeansOfType(RestTemplate.class);
 			// If the restTemplate has been created when the
 			// MetadataRestTemplatePostProcessor Bean
 			// is initialized, then manually set the interceptor.
 			if (!CollectionUtils.isEmpty(beans)) {
 				for (RestTemplate restTemplate : beans.values()) {
-					List<ClientHttpRequestInterceptor> interceptors = restTemplate.getInterceptors();
+					List<ClientHttpRequestInterceptor> interceptors = restTemplate
+							.getInterceptors();
 					// Avoid setting interceptor repeatedly.
-					if (null != interceptors && !interceptors.contains(encodeTransferMedataRestTemplateInterceptor)) {
+					if (!interceptors.contains(encodeTransferMedataRestTemplateInterceptor)) {
 						interceptors.add(encodeTransferMedataRestTemplateInterceptor);
 						restTemplate.setInterceptors(interceptors);
 					}
 				}
 			}
-			return new EncodeTransferMetadataRestTemplatePostProcessor(encodeTransferMedataRestTemplateInterceptor);
+			return new EncodeTransferMetadataRestTemplatePostProcessor(
+					encodeTransferMedataRestTemplateInterceptor);
 		}
 
 		@Override
-		public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+		public void setApplicationContext(ApplicationContext applicationContext)
+				throws BeansException {
 			this.context = applicationContext;
 		}
 
-		public static class EncodeTransferMetadataRestTemplatePostProcessor implements BeanPostProcessor {
+		public static class EncodeTransferMetadataRestTemplatePostProcessor
+				implements BeanPostProcessor {
 
 			private EncodeTransferMedataRestTemplateInterceptor encodeTransferMedataRestTemplateInterceptor;
 
@@ -180,9 +187,10 @@ public class MetadataTransferAutoConfiguration {
 			public Object postProcessAfterInitialization(Object bean, String beanName) {
 				if (bean instanceof RestTemplate) {
 					RestTemplate restTemplate = (RestTemplate) bean;
-					List<ClientHttpRequestInterceptor> interceptors = restTemplate.getInterceptors();
+					List<ClientHttpRequestInterceptor> interceptors = restTemplate
+							.getInterceptors();
 					// Avoid setting interceptor repeatedly.
-					if (null != interceptors && !interceptors.contains(encodeTransferMedataRestTemplateInterceptor)) {
+					if (!interceptors.contains(encodeTransferMedataRestTemplateInterceptor)) {
 						interceptors.add(this.encodeTransferMedataRestTemplateInterceptor);
 						restTemplate.setInterceptors(interceptors);
 					}