我在aspnet mvc中有一個返回FileContentResult的動作。我注意到，當fileDownloadName包含元音變音（即åäöü）時，Internet Explorer根本無法讀取文件名。在IE中有效的文件名（用於下載）？
我已經試過URL編碼：
return this.File(document.Content, contentType, Server.UrlEncode(document.Name));
但後來所有的空格用加號（+）替代。
有沒有辦法讓IE工作的unicode文件名稱（保持原來的文件名稱不變）？
這是我目前使用作爲一個黑客：
return this.File(
document.Content,
contentType,
Server.UrlEncode(document.Name).Replace('+',' '));
（這使得空間在IE下劃線）
UrlEncode被誤導命名，它僅適用於表單數據。你會想要UrlPathEncode，而不是解決+問題。背景請參見this question。
然而，在任何情況下，URL編碼在這裏都是錯誤的，因爲您不構建URL。它在IE中工作的事實是一個錯誤，這就是爲什麼你在其他瀏覽器中得到%序列。
不幸的是，沒有可靠的跨瀏覽器的方式來獲得非ASCII字符爲Content-Disposition文件名參數。從理論上講，它可能使用RFC 2331規則，但即使如此，規範仍然存在爭議，而現實卻沒有任何支持。背景請參見this question。
有沒有辦法讓IE工作的unicode文件名稱（保持原始文件名完好）？
從Content-Disposition頭掉落的filename參數，而是包括文件名作爲腳本的地址，它是相當有效的使用URL編碼（UTF-8和UrlPathEncode）的尾部路徑的一部分。例如，對於someaction控制器：
http://www.example.com/someaction/åäöü.txt
http://www.example.com/someaction/%C3%A5%C3%A4%C3%B6%C3%BC.txt
所有的瀏覽器將提供生成的文件保存爲åäöü.txt。
剛剛編碼的文件名，你做的方式，但隨後將所有+替換爲%20。未經測試，但應該工作。
工作正常，在IE瀏覽器，但現在在Chrome瀏覽器中的文件名包含％2B所在空間以前是。 – 2011-12-18 11:58:39
如何用空格替換'+'呢？這應該是允許的，因爲它是ANSI字符。你也可以嘗試在這裏的答案中提供的代碼：http://stackoverflow.com/questions/93551/how-to-encode-the-filename-parameter-of-content-disposition-header-in-http – Mario 2011-12-18 12:02:16
對於答覆，我使用this thread的解決方案。也許你可以嘗試使用它像
return this.File(
document.Content,
contentType,
"\"" + Server.UrlEncode(document.Name) + "\"");
或
return this.File(
document.Content,
contentType,
"\"" + document.Name + "\"");
我試過了編碼的東西，在Chrome和FF中運行良好，但IE遇到了問題。 所以我只是想出了自己的清潔程序。基本上它只是一個映射表，因爲我們不只是想刪除所有特殊字符。
//http://www.pjb.com.au/comp/diacritics.html
private static string[,] CharacterReplacements = {
{ " ", "-"},
{ "&", "-"},
{ "?", "-"},
{ "!", "-"},
{ "%", "-"},
{ "+", "-"},
{ "#", "-"},
{ ":", "-"},
{ ";", "-"},
{ ".", "-"},
{ "¢", "c" }, //cent
{ "£", "P" }, //Pound
{ "€", "E" }, //Euro
{ "¥", "Y" }, //Yen
{ "°", "d" }, //degree
{ "¼", "1-4" }, //fraction one-quarter
{ "½", "1-2" }, //fraction half
{ "¾", "1-3" }, //fraction three-quarters}
{ "@", "AT)"}, //at
{ "Œ", "OE" }, //OE ligature, French (in ISO-8859-15)
{ "œ", "oe" }, //OE ligature, French (in ISO-8859-15)
{"Å","A" }, //ring
{"Æ","AE"}, //diphthong
{"Ç","C" }, //cedilla
{"È","E" }, //grave accent
{"É","E" }, //acute accent
{"Ê","E" }, //circumflex accent
{"Ë","E" }, //umlaut mark
{"Ì","I" }, //grave accent
{"Í","I" }, //acute accent
{"Î","I" }, //circumflex accent
{"Ï","I" }, //umlaut mark
{"Ð","Eth"}, //Icelandic
{"Ñ","N" }, //tilde
{"Ò","O" }, //grave accent
{"Ó","O" }, //acute accent
{"Ô","O" }, //circumflex accent
{"Õ","O" }, //tilde
{"Ö","O" }, //umlaut mark
{"Ø","O" }, //slash
{"Ù","U" }, //grave accent
{"Ú","U" }, //acute accent
{"Û","U" }, //circumflex accent
{"Ü","U" }, //umlaut mark
{"Ý","Y" }, //acute accent
{"Þ","eth"}, //Icelandic - http://en.wikipedia.org/wiki/Thorn_(letter)
{"ß","ss"}, //German
{"à","a" }, //grave accent
{"á","a" }, //acute accent
{"â","a" }, //circumflex accent
{"ã","a" }, //tilde
{"ä","ae"}, //umlaut mark
{"å","a" }, //ring
{"æ","ae"}, //diphthong
{"ç","c" }, //cedilla
{"è","e" }, //grave accent
{"é","e" }, //acute accent
{"ê","e" }, //circumflex accent
{"ë","e" }, //umlaut mark
{"ì","i" }, //grave accent
{"í","i" }, //acute accent
{"î","i" }, //circumflex accent
{"ï","i" }, //umlaut mark
{"ð","eth"}, //Icelandic
{"ñ","n" }, //tilde
{"ò","o" }, //grave accent
{"ó","o" }, //acute accent
{"ô","o" }, //circumflex accent
{"õ","o" }, //tilde
{"ö","oe"}, //umlaut mark
{"ø","o" }, //slash
{"ù","u" }, //grave accent
{"ú","u" }, //acute accent
{"û","u" }, //circumflex accent
{"ü","ue"}, //umlaut mark
{"ý","y" }, //acute accent
{"þ","eth"}, //Icelandic - http://en.wikipedia.org/wiki/Thorn_(letter)
{"ÿ","y" }, //umlaut mark
};
我裹成一個功能，你可以在這裏找到代碼：
http://remy.supertext.ch/2012/08/clean-filenames/
如果瀏覽器具有內置插件來打開該文件類型（例如-PDF），則會導致問題。在這種情況下，文件不會被保存，而是在瀏覽器內自動打開，這可能不是所需的行爲。 – 2012-05-01 13:11:26
@Tom：你仍然可以傳遞一個'Content-Disposition：attachment'頭文件，只是沒有'filename'參數。 – bobince 2012-05-02 08:01:21