一、添加依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
<version>2.2.5.RELEASE</version>
</dependency>二、配置文件开启feign对hystrix的支持：
feign:
hystrix:
enabled: true三、启动类添加注解@EnableHystrix
四、编写@FeignClient接口
package cn.edu.tju.service;
import cn.edu.tju.component.FeignDemoServiceFallback;
import cn.edu.tju.config.MyConfig2;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
@FeignClient(value = "EUREKA-SERVICE-PROVIDER" /*, configuration = MyConfig2.class*/ , fallback = FeignDemoServiceFallback.class)
public interface FeignDemoService {
@RequestMapping("/hello")
String helloWorld();
}五、编写接口对应的降级实现类：
package cn.edu.tju.component;
import cn.edu.tju.service.FeignDemoService;
import org.springframework.stereotype.Component;
@Component
public class FeignDemoServiceFallback implements FeignDemoService {
@Override
public String helloWorld() {
return "my fallback......";
}
}