問(wèn)題描述

在使用feign過(guò)程中，通過(guò)配置 feign.hystrix.enabled=true 開啟熔斷。但啟動(dòng)后將直接執(zhí)行fallback也不會(huì)判斷調(diào)用是否成功。在未配置熔斷啟動(dòng)的情況下調(diào)用正常，當(dāng)前需要開啟熔斷后先嘗試調(diào)用，在調(diào)用失敗后才調(diào)用fallback的回退方法。

相關(guān)代碼

Feign 客戶端

@FeignClient(name = ServiceConstant.HNISTER_SECURITY,fallback = ResourceRestApiFallback.class,path = "api")
public interface ResourceRestApi {
    @GetMapping(path = "resources")
    List<ResourceDTO> findAll();

    @GetMapping(path = "resources/status/{status}")
    List<ResourceDTO> findByStatus(@PathVariable(name = "status") Integer status);
}

Fallback

@Component
public class ResourceRestApiFallback implements ResourceRestApi {
    private Logger logger = LoggerFactory.getLogger(ResourceRestApiFallback.class);


    @Override
    public List<ResourceDTO> findAll() {
        logger.error("#hnister# feign client ResourceRestApiFallback.findAll() fail");
        return Lists.newArrayList();
    }

    @Override
    public List<ResourceDTO> findByStatus(Integer status) {
        logger.error("#hnister# feign client ResourceRestApiFallback.findByStatus() fail");
        return Lists.newArrayList();
    }
}