新增获取单个对象大小函数

Object/AWS/AmazonS3Util.py

@@ -213,3 +213,15 @@ class AmazonS3Util:
                 s3.Object(target_bucket, target_key).copy_from(CopySource=copy_source, StorageClass=storage_class)
             else:
                 s3.Object(target_bucket, target_key).copy_from(CopySource=copy_source)
+
+    def get_object_size(self,bucket_name, object_key):
+        """
+        获取存储桶中指定对象的大小
+
+        :param bucket_name: string，存储桶名称
+        :param object_key: string，对象键名
+        :return: int，指定对象的大小，单位为字节
+        """
+        s3 = self.session_conn
+        obj = s3.Object(bucket_name, object_key)
+        return obj.content_length