SpringCloud中集成Hystrix实现降级时通过FeignFallBack实现通配服务
作者:互联网
场景
SpringCloud中集成Hystrix实现服务降级(从实例入手):
https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124948025
上面在进行降级配置的fallback时是通过如下方式配置
@GetMapping("/consumer/payment/hystrix/timeout/{id}") @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = { @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value="2000") }) public String paymentInfo_TimeOut(Integer id) { //int age = 10/0; String result = paymentHystrixService.paymentInfo_TimeOut(id); return result; } public String paymentInfo_TimeOutHandler(Integer id) { return "线程池: "+Thread.currentThread().getName()+"来自消费者88的提示:服务提供者繁忙或者运行报错,请稍后再试,id: "+id+"\t"+"o(╥﹏╥)o"; }
但是这样就需要在每个方法中重复添加注解并配置fallback方法。
有没有可以通配的方式进行配置fallback。
注:
博客:
https://blog.csdn.net/badao_liumang_qizhi
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实现
1、首先确保yml中如下配置已经打开
feign: hystrix: enabled: true
2、然后新建一个类实现上面的Service接口,统一为接口里面的方法进行异常处理
package com.badao.springclouddemo.service; import org.springframework.stereotype.Component; @Component public class PaymentFallbackService implements PaymentHystrixService { @Override public String paymentInfo_OK(Integer id) { return "-----PaymentFallbackService fall back-paymentInfo_OK ,o(╥﹏╥)o"; } @Override public String paymentInfo_TimeOut(Integer id) { return "-----PaymentFallbackService fall back-paymentInfo_TimeOut ,o(╥﹏╥)o"; } }
3、给service接口中@FeignClinet注解中配置fallback属性为上面的实现类
package com.badao.springclouddemo.service; import org.springframework.cloud.openfeign.FeignClient; import org.springframework.stereotype.Component; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; @Component @FeignClient(value = "CLOUD-PROVIDER-HYSTRIX-PAYMENT",fallback = PaymentFallbackService.class) public interface PaymentHystrixService { @GetMapping("/payment/hystrix/ok/{id}") public String paymentInfo_OK(@PathVariable("id") Integer id); @GetMapping("/payment/hystrix/timeout/{id}") public String paymentInfo_TimeOut(@PathVariable("id") Integer id); }
4、此时依次启动Eureka Server 7001,以及服务提供者8001和服务消费者88
正常访问服务确保没问题
然后将8001关掉,模拟宕机的情况,此时服务消费者中调用对应的服务则会进入对应的实现中的返回。
标签:通配,FeignFallBack,String,Hystrix,paymentInfo,id,TimeOut,Integer,public 来源: https://www.cnblogs.com/badaoliumangqizhi/p/16306149.html