@gmail.com> wrote:
> On Jun 7, 11:00 am, Boris Granveaud <bgran...@gmail.com> wrote:
> > Hi,
>
> > It seems that JSONParser doesn't like some unicode characters if they
> > are not escaped with \uxxxx:
>
> > public class Test implements EntryPoint {
> > public void onModuleLoad() {
> > for (char c = 0x2000; c < 0x2050; c++) {
> > String str = "{\"string\":\"" + c + "\"}";
> > try {
> > JSONValue json = JSONParser.parse(str);
> > } catch (Exception e) {
> > System.out.println("JSON parse error char=" +
> > Integer.toHexString((int) c));
> > }
> > }
> > }
>
> > }
>
> > In GWT 2.0.3 emulator, I've got the following results:
>
> > - Chrome 5.0 and FF 3.6: error with character 0x2028 and 0x2029
> > - IE 8.0: no error
>
> > It works if I escape the characters with \u2028 and \u2029.
>
> This is because GWT for now uses eval() to "parse" JSON, and U+2028
> and U+2029 are line terminators in JavaScript (per spec).
> Quoting ECMASCript 5, which defines JSON.parse:
> """JSON uses a more limited set of white space characters than
> WhiteSpace and allows Unicode code points U+2028 and U+2029 to
> directly appear in JSONString literals without using an escape
> sequence."""
>
> > I'm using Jackson on server-side to generate the JSON string which is
> > sent to my GWT application and it doesn't escape by default these
> > characters. As a workaround, I've implemented a Jackson custom
> > serializer.
>
> Jackson is right, as these aren't special characters in JSON, but on
> the other hand, it could escape them to cope with web apps that eval()
> the result instead of JSON.parse()ing it.
if someone is interested by the workaround, it is now on Jackson wiki:
http://wiki.fasterxml.com/JacksonSampleQuoteChars
there are also several issues regarding escaping in JIRA:
http://jira.codehaus.org/browse/JACKSON-102
http://jira.codehaus.org/browse/JACKSON-262
http://jira.codehaus.org/browse/JACKSON-219
Boris.
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to google-web-tool...@googlegroups.com.
To unsubscribe from this group, send email to
google-web-toolkit+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
