StringBuffer sb = new StringBuffer();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c >= 0 && c <= 255) {
sb.append(c);
} else {
byte[] b;
try {
b = Character.toString(c).getBytes("utf-8");
} catch (Exception ex) {
exceptionUtil.error("將檔案名稱中的漢字轉為UTF8編碼的字串時錯誤，輸入的字串為：" + s);
b = new byte[0];
}
for (int j = 0; j < b.length; j++) {
int k = b[j];
if (k < 0)
k += 256;
sb.append("%" + Integer.toHexString(k).toUpperCase());
}
}
}
return sb.toString();
}
/**
* 根據不同瀏覽器將檔案名稱中的漢字轉為UTF8編碼的字串,以便下載時能正確顯示另存的檔案名稱.
*
* @param s
* 原始檔名
* @return 重新編碼後的檔案名
*/
public static String toUtf8String(HttpServletRequest request, String s) {
String agent = request.getHeader("User-Agent");
try {
boolean isFireFox = (agent != null && agent.toLowerCase().indexOf("firefox") != -1);
if (isFireFox) {
s = new String(s.getBytes("UTF-8"), "ISO8859-1");
} else {
s = StringUtil.toUtf8String(s);
if ((agent != null && agent.indexOf("MSIE") != -1)) {
// see http://support.microsoft.com/default.aspx?kbid=816868
if (s.length() > 150) {
// 根據request的locale 得到可能的編碼
s = new String(s.getBytes("UTF-8"), "ISO8859-1");
}
}
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return s;
}