[jetty-users] java.lang.IllegalArgumentException: !utf8 when decode a re

["Wasinee A." <wasinee.a@xxxxxxxxx>]

Hi,

when I try to post any data containing Thai character, Jetty7 will
throw an exception:

java.lang.IllegalArgumentException: !utf8 at
org.eclipse.jetty.util.Utf8StringBuilder.append(Utf8StringBuilder.java:112) at
org.eclipse.jetty.util.UrlEncoded.decodeUtf8To(UrlEncoded.java:450) at
org.eclipse.jetty.util.UrlEncoded.decodeTo(UrlEncoded.java:497) at
org.eclipse.jetty.server.Request.extractParameters(Request.java:261)

It seems Utf8StringBuffer.append() will always throw
java.lang.IllegalArgumentException: !utf8 when try to decode any
unicode character between 2048 to 4095.

To reproduce it, run this code:

public static void main(String[] args) throws Exception {
   UrlEncoded encoded = new UrlEncoded();
   UrlEncoded encoded2 = new UrlEncoded();

   // 2047, 2048, 2049, 4094, 4095, 4096
    String[] characters = {"\u07FF",  "\u0800", "\u0801", "\u0FFE",
"\u0FFF", "\u1000"};
    String expectEncoded;
    for (String character : characters) {
      encoded.clear();
      encoded2.clear();

      encoded.add("var", character);
      expectEncoded = encoded.encode();
      try {
        encoded2.decode(expectEncoded);
        System.out.println("PASSED " + (int) character.charAt(0));
      } catch (Exception e) {
        System.out.println("FAILED " + (int) character.charAt(0) + ",
" + e.getMessage());
      }
    }
}

Am I missing something?  Or is it a Jetty7 bug?

Thanks in advance,
W.A.