use mimetypes.guess_type

pics_server/routers/pics.py

@@ -1,5 +1,6 @@
 
 from io import BytesIO
+import mimetypes
 import os
 from pathlib import Path
 from time import time
@@ -36,18 +37,12 @@ def get_image(file_path: str, db: Session = Depends(get_db)):
     image_path = Path(Path.home()).joinpath(
         'Pictures').joinpath('upload_images')
     try:
-        # img_file = open(image_path.joinpath(file_path), mode='rb')
-        img_pil = Image.open(image_path.joinpath(file_path))
+        img_file = open(image_path.joinpath(file_path), mode='rb')
     except:
         raise HTTPException(status_code=404, detail="没有找到图片")
-
-    img_buffer = BytesIO()
-    img_pil.save(img_buffer, format=img_pil.format)
-    media_type = f'image/{img_pil.format.lower()}'
-    img_resp = BytesIO(img_buffer.getvalue())
-    img_buffer.close()
-    img_pil.close()
-
+    media_type = mimetypes.guess_type(file_path)[0]
+    img_resp = BytesIO(img_file.read())
+    img_file.close()
     try:
         ori_file_name = crud.get_pic_by_path(db, file_path=file_path).file_name
     except: