Configuring event notifications using object key name filtering
To Nha Notes | July 4, 2023, 6:01 p.m.
Note
A wildcard character ("*") can't be used in filters as a prefix or suffix. If your prefix or suffix contains a space, you must replace it with the "+" character. If you use any other special characters in the value of the prefix or suffix, you must enter them in URL-encoded (percent-encoded) format. For a complete list of special characters that must be converted to URL-encoded format when used in a prefix or suffix for event notifications, see Safe characters.
Characters that might require special handling
The following characters in a key name might require additional code handling and likely need to be URL encoded or referenced as HEX. Some of these are non-printable characters that your browser might not handle, which also requires special handling:
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Ampersand ("&")
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Dollar ("$")
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ASCII character ranges 00–1F hex (0–31 decimal) and 7F (127 decimal)
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'At' symbol ("@")
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Equals ("=")
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Semicolon (";")
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Forward slash ("/")
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Colon (":")
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Plus ("+")
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Space – Significant sequences of spaces might be lost in some uses (especially multiple spaces)
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Comma (",")
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Question mark ("?")
Characters to avoid
Avoid the following characters in a key name because of significant special handling for consistency across all applications.
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Backslash ("\")
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Left curly brace ("{")
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Non-printable ASCII characters (128–255 decimal characters)
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Caret ("^")
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Right curly brace ("}")
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Percent character ("%")
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Grave accent / back tick ("`")
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Right square bracket ("]")
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Quotation marks
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'Greater Than' symbol (">")
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Left square bracket ("[")
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Tilde ("~")
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'Less Than' symbol ("<")
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'Pound' character ("#")
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Vertical bar / pipe ("|")
References
https://docs.aws.amazon.com/AmazonS3/latest/userguide/notification-how-to-filtering.html