将UTF-8 Unicode字符串转换为ASCII Unicode转义的字符串

这是乔恩·斯凯特（Jon Skeet）在评论中想到的简单代码：

final String in = "šđčćasdf";final StringBuilder out = new StringBuilder();for (int i = 0; i < in.length(); i++) {  final char ch = in.charAt(i);  if (ch <= 127) out.append(ch);  else out.append("\u").append(String.format("%04x", (int)ch));}System.out.println(out.toString());

正如乔恩所说，代理对将被表示为一对

u