如何使用预签名的URL限制上传到AWS S3服务的文件的大小

问题描述

我正在使用AWS S3预签名url从客户端(移动应用程序)上传图片.我想防止用户上传大文件.有没有办法限制上传文件的文件大小?

I'm using an AWS S3 presigned url to upload picture from a client (mobile app).I want to prevent the user to upload large files.Is there a way to limit the file size of an uploaded file?

谢谢

推荐答案

在s3策略中检出"content-length-range". http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-HTTPPOSTConstructPolicy.html

Check out "content-length-range" in s3 policy. http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-HTTPPOSTConstructPolicy.html

content-length-range
上载内容的最小和最大允许大小. 此条件支持content-length-range条件匹配类型.

content-length-range
The minimum and maximum allowable size for the uploaded content. This condition supports content-length-range condition match type.

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