Fix HubServing demo (#709)

deploy/hubserving/readme.md

@@ -118,7 +118,7 @@ hub serving start -c deploy/hubserving/clas/config.json
 - **top_k**：[**可选**] 返回前 `top_k` 个 `score` ，默认为 `1`。
 
 访问示例：  
-```python tools/test_hubserving.py http://127.0.0.1:8866/predict/clas_system ./deploy/hubserving/ILSVRC2012_val_00006666.JPEG 5```
+```python tools/test_hubserving.py --server_url http://127.0.0.1:8866/predict/clas_system --image_file ./deploy/hubserving/ILSVRC2012_val_00006666.JPEG 5```
 
 ### 返回结果格式说明
 返回结果为列表（list），包含top-k个分类结果，以及对应的得分，还有此图片预测耗时，具体如下：

deploy/hubserving/readme_en.md

@@ -121,7 +121,7 @@ Two parameters need to be passed to the script:
 
 **Eg.**
 ```shell
-python tools/test_hubserving.py http://127.0.0.1:8866/predict/clas_system ./deploy/hubserving/ILSVRC2012_val_00006666.JPEG 5
+python tools/test_hubserving.py --server_url http://127.0.0.1:8866/predict/clas_system --image_file ./deploy/hubserving/ILSVRC2012_val_00006666.JPEG 5
 ```
 
 ### Returned result format

tools/test_hubserving.py

@@ -87,11 +87,12 @@ def main(args):
                 predict_time += elapse
 
                 for number, result_list in enumerate(batch_result_list):
-                    all_score += result_list[0]["score"]
-                    result_str = ", ".join([
-                        "{}: {:.2f}".format(r["cls_id"], r["score"])
-                        for r in result_list
-                    ])
+                    all_score += result_list["scores"][0]
+                    result_str = ""
+                    for i in range(len(result_list["clas_ids"])):
+                        result_str += "{}: {:.2f}\t".format(
+                            result_list["clas_ids"][i],
+                            result_list["scores"][i])
                     logger.info("File:{}, The top-{} result(s): {}".format(
                         img_name_list[number], args.top_k, result_str))