deal the external image when extract docx image (#5024)

api/core/rag/extractor/word_extractor.py

@@ -76,6 +76,18 @@ class WordExtractor(BaseExtractor):
         for rel in doc.part.rels.values():
             if "image" in rel.target_ref:
                 image_count += 1
+                if rel.is_external:
+                    url = rel.reltype
+                    response = requests.get(url, stream=True)
+                    if response.status_code == 200:
+                        image_ext = mimetypes.guess_extension(response.headers['Content-Type'])
+                        file_uuid = str(uuid.uuid4())
+                        file_key = 'image_files/' + self.tenant_id + '/' + file_uuid + '.' + image_ext
+                        mime_type, _ = mimetypes.guess_type(file_key)
+                        storage.save(file_key, response.content)
+                    else:
+                        continue
+                else:
                     image_ext = rel.target_ref.split('.')[-1]
                     # user uuid as file name
                     file_uuid = str(uuid.uuid4())