我们从 Vartec 的解决方案开始,但发现了其他问题。此解决方案适用于 UTF-16,但可以更改为返回 UTF-8。为清楚起见,全部替换,您可以在http://www.cognitteam.com/wiki/index.php?title=DecodeEncodeJavaScript阅读更多内容
static public String unescape(String escaped) throws UnsupportedEncodingException
{
// This code is needed so that the UTF-16 won't be malformed
String str = escaped.replaceAll("%0", "%u000");
str = str.replaceAll("%1", "%u001");
str = str.replaceAll("%2", "%u002");
str = str.replaceAll("%3", "%u003");
str = str.replaceAll("%4", "%u004");
str = str.replaceAll("%5", "%u005");
str = str.replaceAll("%6", "%u006");
str = str.replaceAll("%7", "%u007");
str = str.replaceAll("%8", "%u008");
str = str.replaceAll("%9", "%u009");
str = str.replaceAll("%A", "%u00A");
str = str.replaceAll("%B", "%u00B");
str = str.replaceAll("%C", "%u00C");
str = str.replaceAll("%D", "%u00D");
str = str.replaceAll("%E", "%u00E");
str = str.replaceAll("%F", "%u00F");
// Here we split the 4 byte to 2 byte, so that decode won't fail
String [] arr = str.split("%u");
Vector<String> vec = new Vector<String>();
if(!arr[0].isEmpty())
{
vec.add(arr[0]);
}
for (int i = 1 ; i < arr.length ; i++) {
if(!arr[i].isEmpty())
{
vec.add("%"+arr[i].substring(0, 2));
vec.add("%"+arr[i].substring(2));
}
}
str = "";
for (String string : vec) {
str += string;
}
// Here we return the decoded string
return URLDecoder.decode(str,"UTF-16");
}