@HystrixCommand annotation provides attribute ignoreExceptions that can be USED to PROVIDE a list of ignored exceptions.

Code

• import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
• import org.springframework.beans.factory.annotation.Autowired;
• import org.springframework.cloud.client.ServiceInstance;
• import org.springframework.cloud.client.loadbalancer.LoadBalancerClient; 
• import org.springframework.stereotype.Service;
• import org.springframework.web.client.RestTemplate; 
• import java.net.URI;

@Service

@Autowired

@Autowired

@HystrixCommand(fallbackMethod = "reliable", ignoreExceptions = IllegalStateException.class, MissingServletRequestParameterException.class, TypeMismatchException.class)

ServiceInstance instance = loadBalancer.choose("product-service"); URI uri = URI.create("HTTP://product-service/product/recommended"); return this.restTemplate.getForObject(uri, String.class);}

In the above example, if the ACTUAL method call throws IllegalStateException, MissingServletRequestParameterException or TypeMismatchException then hystrix will not trigger the fallback logic (reliable method), instead the actual EXCEPTION will be wrapped inside HystrixBadRequestException and re-thrown to the caller. It is taken care by javanica library under the hood.