springcloud之Hystrix初识篇—结合Feign获取请求异常-蒲公英云

springcloud之Hystrix初识篇—结合Feign获取请求异常

1、创建一个fallbackfactory(捕获异常)类

/**
 * FallbackFactory<T>:FeignTest1Service就是用于feign请求的接口
 * Created by py
 * 2020/3/26
 */
@Component
public class FeignTest1ServiceFallBackFactory implements FallbackFactory<FeignTest1Service> {
    @Override
    public FeignTest1Service create(Throwable throwable) {
        return new FeignTest1Service() {
            @Override
            public String testFeign(Map<String, String> map) {
                return "熔断了:{"+map.toString()+"},throwable:{"+throwable+"}";
            }
        };
    }
}

2、feign调用接口配置fallback捕获异常参数

/**
 * 此处使用的参数是fallbackFactory，不再是fallback
 **/
@FeignClient(name = "test1",path ="eureka-clinet1",fallbackFactory = FeignTest1ServiceFallBackFactory.class,configuration = FeignAuthConfiguration.class)
public interface FeignTest1Service {
    @RequestMapping(value = "/ribbonTest",method = RequestMethod.POST)
    public String testFeign(@RequestBody Map<String,String> map);
}