Sentinel整合RestTemplate

resttemplate.sentinel.enabled=true

spring.cloud.sentinel.transport.dashboard=localhost:8858\
spring.cloud.sentinel.transport.dashboard.port=8739 

@Configuration
public class RestTemplateConfig {@Bean@LoadBalanced@SentinelRestTemplate(fallbackClass = ExceptionUtil.class,fallback = "fallBack",blockHandlerClass = ExceptionUtil.class, blockHandler = "handleBlock")public RestTemplate restTemplate() {return new RestTemplate();}public static class ExceptionUtil {public static ClientHttpResponse handleBlock(HttpRequest request, byte[] body, ClientHttpRequestExecution execution, BlockException be){RestResponse<Void> commonResult =  RestResponse.error("500","降级处理函数 block 。。。。。");return new SentinelClientHttpResponse(JSON.toJSONString(commonResult));}public static ClientHttpResponse fallBack(HttpRequest request, byte[] body, ClientHttpRequestExecution execution, BlockException be){RestResponse<Void> commonResult = RestResponse.error("500","异常处理函数 fallback 。。。。。");return new SentinelClientHttpResponse(JSON.toJSONString(commonResult));}}
}

@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {@Autowiredprivate RestTemplate restTemplate ;@GetMapping("/index")public RestResponse<String> index(){String url = "http://hello-nacos-client/hello/index" ;RestResponse<String> retValue = restTemplate.getForObject(url, RestResponse.class);log.info("ret value : {}", retValue);return retValue ;}@GetMapping("/exception")public Object exception(){String url = "http://hello-nacos-client/hello/exception" ;RestResponse<String> retValue = restTemplate.getForObject(url, RestResponse.class);log.info("ret value : {}", retValue);return retValue ;}
}