用户前端传过来的图片需要压缩剪裁处理,不落盘,直接用 Pillow 的 Image 打开 BytesIO 可以处理吗? - V2EX
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miniyao

用户前端传过来的图片需要压缩剪裁处理,不落盘,直接用 Pillow 的 Image 打开 BytesIO 可以处理吗?

  •  
  •   miniyao Sep 24, 2020 2851 views
    This topic created in 2055 days ago, the information mentioned may be changed or developed.
    当前的操作是先把用户前端传过来的图片落盘保存,然后用 Image.open() 打开处理。

    如果把用户前端传过来的图片,不落盘,直接用 Image 处理,可以吗?
    8 replies    2020-09-24 15:30:08 +08:00
    1462326016
        1
    1462326016  
       Sep 24, 2020   1
    可以啊,open 函数参数 fp 也可以是一个文件对象,只要实现了 read,seek,tell 就可以
    ```
    from PIL import Image
    from io import BytesIO

    img_cOntent= b'k11111'
    img = Image.open(BytesIO(img_content))
    img.xxx
    ```
    qsfun
        2
    qsfun  
       Sep 24, 2020 via iPhone
    不落盘可能得考虑内存问题。不过如果你直接把 http 的流直接 pipe 给 image,倒是没有内存问题,不了解是否支持这样操作
    nicoljiang
        3
    nicoljiang  
    PRO
       Sep 24, 2020
    这种还是用专门的云存储比较好吧。
    bjt
        4
    bjt  
       Sep 24, 2020
    不落盘多半是为了节省硬盘 io 吧, 可以考虑用 tmpfs 内存盘
    zouri
        5
    zouri  
       Sep 24, 2020
    可以直接裁剪完再分别保存
    qiayue
        6
    qiayue  
    PRO
       Sep 24, 2020
    前端直接传到七牛等云存储
    misaka19000
        7
    misaka19000  
       Sep 24, 2020
    当然可以
    linvaux
        8
    linvaux  
       Sep 24, 2020 via iPhone
    不怕内存爆了?
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