@GetMapping("/exp")
	public String exp() {
		return restTemplate.getForObject("https://httpbin.org/status/500", String.class);
	}
@author raozihao
@author <a href="mailto:zihaorao@gmail.com">Steve</a>
spring-cloud-alibaba-examples/sentinel-example/sentinel-resttemplate-example/src/main/java/com/alibaba/cloud/examples/controller/TestController.java