public static void fallbackException2(HttpRequest request, byte[] body,
				ClientHttpRequestExecution execution, BlockException ex) {
			System.out.println("Oops: " + ex.getClass().getCanonicalName());
		}
@author <a href="mailto:fangjian0423@gmail.com">Jim</a>
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-sentinel/src/test/java/com/alibaba/cloud/sentinel/SentinelRestTemplateTests.java