这里写自定义目录标题

消费端和服务端同时加服务降级fallback,出现多次请求1.消费侧代码ControllerService 2.服务方代码ControllerService 3.浏览器调用消费者接口4.日志输出真的很诧异为什么是这样结果，如描述问题用词有错还请包涵，感谢感谢！！！！！！！

消费端和服务端同时加服务降级fallback,出现多次请求

在练习中遇到的问题：使用Hystrix对消费侧，服务侧同时加入fallback降级。 1.对消费侧降级要求是响应时长超过5s，则降级到另一个接口 2.对服务侧降级要求是响应时长超过5s，则降级到另一个接口 3.服务侧被降级接口被调用时方法内等待3s，之后返回信息。 4.通过请求消费者（被降级）接口，消费者接口通过OpenFeign服务调用服务方（被降级）接口。 5.按照逻辑5s内消费者会返回服务方被降级接口的返回，但实操情况是，日志中先打印服务方降级后接口的返回，之后打印两次服务方被降级接口返回。

1.消费侧代码

Controller

@GetMapping("/consumer/payment/hystrix/timeout/{id}") @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler",commandProperties = { @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000") //3秒钟以内就是正常的业务逻辑 }) public String paymentInfo_Timeout(@PathVariable("id") Integer id){ log.info("-----------------------"); String result = feignService.paymentInfo_TimeOut(id); log.info("************result: "+result); return result; } public String paymentInfo_TimeoutHandler(@PathVariable("id") Integer id){ log.info("--------------------------------------------------"); String result = feignService.paymentInfo_TimeoutHandler(id); return result ; }

Service

@GetMapping("/payment/hystrix/timeout/{id}") String paymentInfo_TimeOut(@PathVariable("id") Integer id); @GetMapping("/payment/hystrix/timeouthandler1/{id}") String paymentInfo_TimeoutHandler(@PathVariable("id") Integer id);

2.服务方代码

Controller

@GetMapping("/payment/hystrix/timeout/{id}") public String paymentInfo_Timeout(@PathVariable("id") Integer id){ log.info("8001-----------------------------------"+id); String result = paymentService.paymentInfo_Timeout(id); log.info("************result: "+result); return result; } @GetMapping("/payment/hystrix/timeouthandler1/{id}") public String paymentInfo_TimeoutHandler1(@PathVariable("id") Integer id){ String result = paymentService.paymentInfo_TimeoutHandler1(id); log.info("************result: "+result); return result; }

Service

@HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler1" ,commandProperties = { @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000") //3秒钟以内就是正常的业务逻辑 }) public String paymentInfo_Timeout(Integer id){ System.out.println("---------------------------------------------8001"); long time = 4000; // int age = 10/0; try{ TimeUnit.MILLISECONDS.sleep(time); // Thread.sleep(time); }catch(InterruptedException e){ e.printStackTrace(); } return "线程池： " + Thread.currentThread().getName() + "paymentInfo_TimeOut:耗时"+time+"ms,id: O(∩_∩)O" + id; } public String paymentInfo_TimeoutHandler1(Integer id){ return "线程池： " + Thread.currentThread().getName() + "系统繁忙, ┭┮﹏┭┮" ; }

3.浏览器调用消费者接口

4.日志输出

2020-07-01 21:00:52.205 INFO 4076 --- [io-8001-exec-10] c.f.s.controller.PaymentController : 8001-----------------------------------2 ---------------------------------------------8001 2020-07-01 21:00:53.211 INFO 4076 --- [nio-8001-exec-8] c.f.s.controller.PaymentController : 8001-----------------------------------2 2020-07-01 21:00:53.212 INFO 4076 --- [nio-8001-exec-3] c.f.s.controller.PaymentController : ************result: 线程池： http-nio-8001-exec-3系统繁忙, ┭┮﹏┭┮ ---------------------------------------------8001 2020-07-01 21:00:56.210 INFO 4076 --- [io-8001-exec-10] c.f.s.controller.PaymentController : ************result: 线程池： hystrix-PaymentService-10paymentInfo_TimeOut:耗时4000ms,id: O(∩_∩)O2 2020-07-01 21:00:57.215 INFO 4076 --- [nio-8001-exec-8] c.f.s.controller.PaymentController : ************result: 线程池： hystrix-PaymentService-9paymentInfo_TimeOut:耗时4000ms,id: O(∩_∩)O2 2020-07-01 21:04:06.529 INFO 4076 --- [trap-executor-0] c.n.d.s.r.aws.ConfigClusterResolver : Resolving eureka endpoints via configuration 2020-07-01 21:09:06.530 INFO 4076 --- [trap-executor-0] c.n.d.s.r.aws.ConfigClusterResolver : Resolving eureka endpoints via configuration

真的很诧异为什么是这样结果，如描述问题用词有错还请包涵，感谢感谢！！！！！！！