SpringCloud: Feign集成Hystrix(FALLBACKFACTORY 方式)

@FeignClient(value = "eureka-client",configuration = FeignConfig.class,fallbackFactory = HystrixClientFactory.class)
public interface FeignHystrixInter {
 
    //使用 Spring MVC 的注解来绑定具体该服务提供的 REST 接口
    @GetMapping(value = "/HiController/hi/{name}")
    String hi(@PathVariable(value = "name") String name);
}

//继承 @FeignClient 注解的 接口类
public interface UserFeignClientWithFactory extends FeignHystrixInter {
}

@Component //注入Spring 容器中
public class HystrixClientFactory implements FallbackFactory<FeignHystrixInter> {
 
    private static final Logger logger = LoggerFactory.getLogger(HystrixClientFactory.class);
 
    @Override
    public FeignHystrixInter create(Throwable cause) {
        //一进入异常就能知道什么异常
        HystrixClientFactory.logger.info("fallback; exception was: {}", cause.toString());
        HystrixClientFactory.logger.info("fallback; reason was: {}", cause.getMessage());
        return new UserFeignClientWithFactory() {
            @Override
            public String hi(String name) {
                return "我有两把枪，一把叫射，一把叫啊";
            }
        };
    }
}

@SpringBootApplication
//开启服务注册于发现
@EnableDiscoveryClient
//开启 Feign Client 功能
@EnableFeignClients
public class EurekaFeignHystrixClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaFeignHystrixClientApplication.class, args);
    }

}