問題描述
base64 編碼的字符串可能包含空格嗎?具體來說,它是否可以在字符串的 end 處包含空格?
Might a base64 encoded string contain whitespace? Specifically, could it contain whitespace at the end of the string?
附注.我正在考慮整個在 VARCHAR 字段中存儲字符串時,MySQL 將修剪尾隨空格";-)
PS. I'm thinking about the whole "MySQL will trim trailing whitespace when storing strings in VARCHAR fields" here ;-)
推薦答案
不,它不能.請參閱 Base64 以了解 base64
使用的允許字符存儲庫,它們是字符 AZ
、az
、0-9
、+
和 /
(最后一個兩個可能因實現而異)以及填充字符 =
(但這也取決于實現,因為某些實現根本不使用填充).
No it can't. See Base64 for the allowed character repository used by base64
, which are the characters A-Z
, a-z
, 0-9
, +
and /
(the last two may differ depending on the implementation) as well as the padding character =
(but that's also implementation dependent as some implementations don't use padding at all).
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