ruby中的IO編碼錯誤

我知道Ruby從網上拉東西時遇到了一個錯誤的包裝，並且出現了很多編碼錯誤等問題。我怎樣才能強制下面的數組編碼爲真正的形式？ruby中的IO編碼錯誤

["0x4E", "0x3C", "0x89", "0x50", "0xC3", "0x47", "0xFF", "0x70", "xFF", "0x2F", "0xA2", "0xB3", "0x98"]

首先，我試圖編碼成UTF-8：

irb(main):012:0> data = ["0x4E", "0x3C", "0x89", "0x50", "0xC3", "0x47", "0xFF", "0x70", "xFF", "0x2F", "0xA2", "0xB3", "0x98"] 
irb(main):013:0> data.each do |char| 
irb(main):014:1* puts char.encode!("UTF-8", invalid: :replace, undef: :replace) 
irb(main):015:1> end 
0x4E 
0x3C 
0x89 
0x50 
0xC3 
0x47 
0xFF 
0x70 
xFF 
0x2F 
0xA2 
0xB3 
0x98 
=> ["0x4E", "0x3C", "0x89", "0x50", "0xC3", "0x47", "0xFF", "0x70", "xFF", "0x2F", "0xA2", "0xB3", "0x98"]

如此看來，字符已經UTF-8，所以接下來我想ISO-8859-1：

irb(main):086:0> data.each { |char| 
irb(main):087:1* puts char.encode!("iso-8859-1", invalid: :replace, undef: :replace) 
irb(main):088:1> } 
x4E 
x3C 
x89 
x50 
xC3 
x47 
xFF 
x70 
xFF 
x2F 
xA2 
xB3 
x98 
=> ["x4E", "x3C", "x89", "x50", "xC3", "x47", "xFF", "x70", "xFF", "x2F", "xA2", "xB3", "x98"]

這也沒有奏效，它似乎已經下降了0的。

所以我出去的肢體，並與URI.decode試了一下：

irb(main):093:0> require 'uri' 
=> true 
irb(main):094:0> data.each { |char| 
irb(main):095:1* puts URI.decode(char) 
irb(main):096:1> } 
x4E 
x3C 
x89 
x50 
xC3 
x47 
xFF 
x70 
xFF 
x2F 
xA2 
xB3 
x98 
=> ["x4E", "x3C", "x89", "x50", "xC3", "x47", "xFF", "x70", "xFF", "x2F", "xA2", "xB3", "x98"]

而且你不知道嗎？它沒有工作。

有沒有辦法讓人物回到原來的形式？如果有幫助，這是來自一個URL，我沒有完整的URL了。

來源

2016-11-29 papasmurf

你'data'是串WHE的陣列第一個是'0x4E'（一個零，一個小的x，一個4和一個E）。沒有特殊字符，是否有可能要檢查十六進制值？也許你在這裏得到一些幫助http://stackoverflow.com/questions/30563697/convert-a-hex-string-to-a-hex-int改善你的問題。 – knut

你正在尋找'puts char.chr.encode（'iso-8859-1'，無效::替換，undef ::替換）' – knut

@knut爲什麼網站URL會拉色十六進制？ – papasmurf

你的陣列

["0x4E", "0x3C", "0x89", "0x50", "0xC3", "0x47", "0xFF", "0x70", "xFF", "0x2F", "0xA2", "0xB3", "0x98"]

是一個字符串數組，每串具有四個字符。第一個字符串是「0x4E」（零，小X，A 4和E）

可能要檢查的十六進制值像數組：

data = [0x4E, 0x3C, 0x89, 0x50, 0xC3, 0x47, 0xFF, 0x70, 0xFF, 0x2F, 0xA2, 0xB3, 0x98]

要獲得字符值你可以使用Integer#chr：

p data.map{|c|c.chr} #-> ["N", "<", "\x89", "P", "\xC3", "G", "\xFF", "p", "\xFF", "/", "\xA2", "\xB3", "\x98"]

此字符可以是「編碼」：

p data.map { |char| 
    char.chr.encode('utf-8', invalid: :replace, undef: :replace) 
} #["N", "<", "\uFFFD", "P", "\uFFFD", "G", "\uFFFD", "p", "\uFFFD", "/", "\uFFFD", "\uFFFD", "\uFFFD"] 


p data.map { |char| 
    char.chr.encode('iso-8859-1', invalid: :replace, undef: :replace) 
} #["N", "<", "?", "P", "?", "G", "?", "p", "?", "/", "?", "?", "?"]

來源

2016-11-29 20:46:20 knut

ruby​​中的IO編碼錯誤

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ruby中的IO編碼錯誤