在线教育项目-day10【整合熔断器】

1添加依赖

        <!--hystrix依赖，主要是用  @HystrixCommand -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>

2.添加hystrix配置

#开启熔断机制
feign.hystrix.enabled=true

# 设置hystrix超时时间，默认1000ms
hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=6000

3.创建一个实现类如果出错执行对应的方法

@Component
public class VodFileDegradeFeignClient implements VodClient{
    
    @Override
    public R deleteAlyiVideo(String videoId) {
        return R.Error().message("删除视频出错了");
    }

    @Override
    public R delete_bantch(List<String> videolist) {
        return R.Error().message("删除多个视频出错了");
    }
}

4.更改注解

@FeignClient(name="service-vod",fallback =VodFileDegradeFeignClient.class)
@Component
public interface VodClient {
    //定义调用方法的路径
    @DeleteMapping("/eduvod/video/deleteAlyiVideo/{videoId}")
    public R deleteAlyiVideo(@PathVariable("videoId") String videoId);

    //定义调用删除多个视频方法的路径
    //删除多个视频
    @DeleteMapping("/eduvod/video/delete-bantch")
    public R delete_bantch(List<String> videolist);
}