将上传的文件保存到磁盘在Flask中不起作用 [英] Saving an uploaded file to disk doesn't work in Flask

问题描述

无论实际名称是什么，我都希望将任何上传的图像以"logo.png"的名称存储到static/customlogos文件夹中.我有基本的Flask设置，其中包含典型的静态和模板文件夹.为简单起见，我在下面的代码中删除了扩展验证之类的内容.但是，这样做会引发FileNotFound错误.由于我想在各种环境中运行我的应用程序，因此我不想使用静态路径.我究竟做错了什么?感谢您的帮助.

I want to store any uploaded image to the static/customlogos folder with the name "logo.png" no matter what its actual name is. I have a basic Flask setup with the typical static and template folders. For simplicity I removed things like extension validation in my code below. However doing it like this throws a FileNotFound error. Since I want to run my app on various environments, I don't want to use a static path. What am I doing wrong? Thanks for your help.

latestfile = request.files['customlogo']
#This prints the file name of the uploaded file
print(latestfile.filename)
#I want to save the uploaded file as logo.png. No matter what the uploaded file name was.
latestfile.save(os.path.join('/static/customlogos', 'logo.png'))

推荐答案

显然，您要将上载的文件另存为 static/customlogos/logo.png ，这是与Flask应用程序目录相关的路径，但您已指定绝对不存在的路径/static/customlogos .
此外，根据您的评论，您正在Windows下进行开发，这会增加问题的不一致性.

Obviously, you want to save uploaded file as static/customlogos/logo.png, path that is relative to your Flask application directory, but you have specified the absolute non-existing path /static/customlogos.
Furthermore, according to your comments you are developing under Windows, which adds inconsistency to your question.

无论如何，要实现所需的功能，您需要知道应用程序的绝对路径，并将其用作起点:

In any case, to achieve what you want, you need to know the absolute path of your application, and use it as a starting point:

latestfile.save(os.path.join(app.root_path, 'static/customlogos/logo.png'))

跨平台版本:

latestfile.save(os.path.join(app.root_path, 'static', 'customlogos', 'logo.png'))

忍者防尘版:

latestfile.save(os.path.join(app.root_path, app.config['STATIC_FOLDER'], 'customlogos', 'logo.png'))

这篇关于将上传的文件保存到磁盘在Flask中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！