1、禁用Feign里面的Hystrix

feign:
  hystrix:
    enabled: false

2、將feign和controller加上對應的參數name

feign

@FeignClient(name="content")
@RequestMapping("/content")
public interface ContentFeign {

    @GetMapping(value = "/list/category/{id}")
    Result<List<Content>> findByCategory(@PathVariable(name = "id") Long id);
}

controller

@RestController
@RequestMapping("/content")
@CrossOrigin
public class ContentController {

   //根據分類id查詢廣告數據
    @GetMapping("/list/category/{id}")
    public Result<List<Content>> findByCategory(@PathVariable(name = "id") Long id){

        List<Content> contents = contentService.findByCategory(id);

        return new Result<List<Content>>(true,StatusCode.OK,"查詢成功",contents);
    }
}

最后成功解決！！

redis成功加載數據