Comments on: JSON http://blog.stringtree.org/2006/08/12/json/ Stringtree Development News Wed, 07 Jan 2009 13:09:55 +0000 http://wordpress.org/?v=2.7 hourly 1 By: musachy http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-1216 musachy Wed, 28 Feb 2007 19:47:02 +0000 http://blog.stringtree.org/?p=4#comment-1216 It didn't make it into Struts 2 core, but it is a plugin: http://cwiki.apache.org/S2PLUGINS/json-plugin.html I'm using your reader/writer with some mods, and it works pretty nice :) hosted here: http://code.google.com/p/jsonplugin/ It didn’t make it into Struts 2 core, but it is a plugin:

http://cwiki.apache.org/S2PLUGINS/json-plugin.html

I’m using your reader/writer with some mods, and it works pretty nice :)

hosted here:

http://code.google.com/p/jsonplugin/

]]> By: Stringtree http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-472 Stringtree Mon, 29 Jan 2007 13:31:34 +0000 http://blog.stringtree.org/?p=4#comment-472 <b>musachy</b>: The default licences for all the Stringtree code are Apache or LGPL ( see http://sourceforge.net/projects/stringtree ). Drop me an email if you want more details. <b>jlist</b>: I'm back to looking at this again now, so I'll try out your suggestion. Thanks. musachy: The default licences for all the Stringtree code are Apache or LGPL ( see http://sourceforge.net/projects/stringtree ). Drop me an email if you want more details.

jlist: I’m back to looking at this again now, so I’ll try out your suggestion. Thanks.

]]> By: jlist http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-339 jlist Thu, 18 Jan 2007 01:46:16 +0000 http://blog.stringtree.org/?p=4#comment-339 The parser stops when hitting "null" in the json string. The same problem happens for "true" and "false". With these changes (see /// in code) the problem seems to be fixed: <code> } else if (c == 't' && next() == 'r' && next() == 'u' && next() == 'e') { ret = Boolean.TRUE; next();/// } else if (c == 'f' && next() == 'a' && next() == 'l' && next() == 's' && next() == 'e') { ret = Boolean.FALSE; next();/// } else if (c == 'n' && next() == 'u' && next() == 'l' && next() == 'l') { ret = null; next();/// </code> The parser stops when hitting “null” in the json string. The same problem happens for “true” and “false”.

With these changes (see /// in code) the problem seems to be fixed:

} else if (c == 't' && next() == 'r' && next() == 'u' && next() == 'e') {
ret = Boolean.TRUE;
next();///
} else if (c == 'f' && next() == 'a' && next() == 'l' && next() == 's' && next() == 'e') {
ret = Boolean.FALSE;
next();///
} else if (c == 'n' && next() == 'u' && next() == 'l' && next() == 'l') {
ret = null;
next();///

]]> By: musachy http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-254 musachy Fri, 05 Jan 2007 21:32:55 +0000 http://blog.stringtree.org/?p=4#comment-254 Hi, What is the license for this cool class? We need a JSON serializer at Struts 2, and I like this one :) regards musachy Hi,

What is the license for this cool class? We need a JSON serializer at Struts 2, and I like this one :)

regards

musachy

]]> By: Janos http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-174 Janos Fri, 15 Dec 2006 03:19:40 +0000 http://blog.stringtree.org/?p=4#comment-174 How do I JSON objects that have Java 5 enums in them? For example: public class Color { public enum ColorType { EXTERIOR, INTERIOR } .. Any help will be appreciated. Janos How do I JSON objects that have Java 5 enums in them? For example:

public class Color {

public enum ColorType { EXTERIOR, INTERIOR }
..
Any help will be appreciated.
Janos

]]> By: blog.caelum.com.br » Ajax no VRaptor: JSON da maneira fácil http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-49 blog.caelum.com.br » Ajax no VRaptor: JSON da maneira fácil Thu, 09 Nov 2006 03:11:30 +0000 http://blog.stringtree.org/?p=4#comment-49 [...] O Fabio Kung deu a idéia de usar JSON para fazer a estrutura básica de Ajax do VRaptor. O Paulo, que detesta(va) trabalhar com JavaScript e interfaces com o usuário, gostou bastante da maneira simples de se representar objetos com JSON. Ele correu atrás de diversas bibliotecas como a JSON-tools e a JSON-lib mas achou que uma dependência apenas para isso seria muita coisa, já que não haveria a necessidade de consumir JSON como Java, apenas produzir. Ele encontrou um código na internet bem simples, mas quando foi usar descobriu uma série de testes que falhariam, então ele, juntamente com o Nico Steppat, mexeu e criou o próprio JSONWriter do VRaptor, junto com um longo test case. [...] [...] O Fabio Kung deu a idéia de usar JSON para fazer a estrutura básica de Ajax do VRaptor. O Paulo, que detesta(va) trabalhar com JavaScript e interfaces com o usuário, gostou bastante da maneira simples de se representar objetos com JSON. Ele correu atrás de diversas bibliotecas como a JSON-tools e a JSON-lib mas achou que uma dependência apenas para isso seria muita coisa, já que não haveria a necessidade de consumir JSON como Java, apenas produzir. Ele encontrou um código na internet bem simples, mas quando foi usar descobriu uma série de testes que falhariam, então ele, juntamente com o Nico Steppat, mexeu e criou o próprio JSONWriter do VRaptor, junto com um longo test case. [...]

]]> By: Sonny Gill http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-41 Sonny Gill Thu, 26 Oct 2006 08:15:01 +0000 http://blog.stringtree.org/?p=4#comment-41 Hi Frank, I tried the code from the latest rev. in the sourceforge repository. The following causes an infinite loop - <code> String js = "{\"prop\":null}"; new JSONReader().read(js); </code> The code enters an infinite loop if a value is null, true or false. I fixed this by adding a call to next() in the following conditional blocks (Otherwise, the token is never equal to OBJECT_END) - <code> } else if (c == 't' && next() == 'r' && next() == 'u' && next() == 'e') { ret = Boolean.TRUE; next(); } else if (c == 'f' && next() == 'a' && next() == 'l' && next() == 's' && next() == 'e') { ret = Boolean.FALSE; next(); } else if (c == 'n' && next() == 'u' && next() == 'l' && next() == 'l') { ret = null; next(); } else if (Character.isDigit(c) || c == '-') { </code> Thanks for the code :) Hi Frank,

I tried the code from the latest rev. in the sourceforge repository.

The following causes an infinite loop -

String js = "{\"prop\":null}";
new JSONReader().read(js);

The code enters an infinite loop if a value is null, true or false.
I fixed this by adding a call to next() in the following conditional blocks (Otherwise, the token is never equal to OBJECT_END) -


} else if (c == 't' && next() == 'r' && next() == 'u' && next() == 'e') {
ret = Boolean.TRUE;
next();
} else if (c == 'f' && next() == 'a' && next() == 'l' && next() == 's' && next() == 'e') {
ret = Boolean.FALSE;
next();
} else if (c == 'n' && next() == 'u' && next() == 'l' && next() == 'l') {
ret = null;
next();
} else if (Character.isDigit(c) || c == '-') {

Thanks for the code :)

]]> By: Frank http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-39 Frank Tue, 17 Oct 2006 11:38:07 +0000 http://blog.stringtree.org/?p=4#comment-39 Eventually I found some time to do this. The JSON source in subversion at Sourceforge now includes the fix for the initial Map problem, and the conversion to returning java.util.List instead of Object[] from arrays. The suggested System.out.println is present, but commented out. I didn't change the names of the constants, though. I'd prefer to leave them matching the names in the JSON spec. These changes will be included in the Stringtree 2.0.4 release, due October 31,2006 Thanks again guys. Eventually I found some time to do this. The JSON source in subversion at Sourceforge now includes
the fix for the initial Map problem, and the conversion to returning java.util.List instead of Object[] from arrays.

The suggested System.out.println is present, but commented out.

I didn’t change the names of the constants, though. I’d prefer to leave them matching the names in the JSON spec.

These changes will be included in the Stringtree 2.0.4 release, due October 31,2006

Thanks again guys.

]]> By: Frank http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-33 Frank Tue, 19 Sep 2006 10:29:37 +0000 http://blog.stringtree.org/?p=4#comment-33 Thanks for the patch(es) guys. I'll update the version in sourceforge and post a new link soon. Thanks for the patch(es) guys. I’ll update the version in sourceforge and post a new link soon.

]]> By: Manni Wood http://blog.stringtree.org/2006/08/12/json/comment-page-1/#comment-31 Manni Wood Thu, 07 Sep 2006 19:24:08 +0000 http://blog.stringtree.org/?p=4#comment-31 Sorry to post that twice, esp. seeing as it did not work. Final note: In my own copy of JSONReader, I changed OBJECT_END to HASHMAP_END and ARRAY_END to ARRAYLIST_END, to match the code's internal representation of the JSON (rather than the JavaScript view of the JSON). I also replaced "return ret.toArray();" with "return ret;" in "array()" (which I renamed "arrayList()") because I actually prefer dealing with List objects rather than arrays. (I also renamed "obejct()" "hashMap()".) Switching from array to ArrayList actually has a nifty side-effect: if you add System.out.println("token: " + ret); just before token = ret; in read(), JDK 1.4 actually pretty-prints the contents of the tokens as they are parsed! (For whatever reason, it did not do the same with arrays --- go figure.) Sorry to post that twice, esp. seeing as it did not work.

Final note:

In my own copy of JSONReader, I changed OBJECT_END to HASHMAP_END and ARRAY_END to ARRAYLIST_END, to match the code’s internal representation of the JSON (rather than the JavaScript view of the JSON).

I also replaced “return ret.toArray();” with “return ret;” in “array()” (which I renamed “arrayList()”) because I actually prefer dealing with List objects rather than arrays. (I also renamed “obejct()” “hashMap()”.)

Switching from array to ArrayList actually has a nifty side-effect: if you add

System.out.println(”token: ” + ret);

just before

token = ret;

in read(), JDK 1.4 actually pretty-prints the contents of the tokens as they are parsed! (For whatever reason, it did not do the same with arrays — go figure.)

]]>