[android-developers] Re: Unserializing objects via the Hessian web protocol leads to ClassNotFoundException
On Aug 26, 6:10 pm, Kostya Vasilyev kmans...@gmail.com wrote: 26.08.2010 14:24, Kevin Read ?: I'll try to shoehorn the PHP class names into the fully qualified Java class name. The issue here is that the web service is also used by the iPhone client, where the deserialization is completely custom-built, so I'll have to tread lightly*sighs* I think it's easier to fix it on the client (Android) side. Put all Hessian-izable objects in one package, and make a change in the piece of code you posted earlier to always add the package name. No changes to the PHP side - no worries about breaking the iPhone client. Thanks Kostya, this is indeed the best approach and works very well. Best regards, Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Unserializing objects via the Hessian web protocol leads to ClassNotFoundException
On Aug 25, 6:19 pm, DanH danhi...@ieee.org wrote:
You can never load a class without its package name.
The message is saying that a class in the null package named
NewsSetCategory cannot be found. Since classes in the null package
are characteristic of toy applications, NewsSetCategory is probably
a toy application on the source platform and is missing on the
phone.
Well, the objects are created and serialized by a PHP script, so toy
is a fairly accurate description ;)
I'll try to shoehorn the PHP class names into the fully qualified Java
class name. The issue here is that the web service is also used by the
iPhone client, where the deserialization is completely custom-built,
so I'll have to tread lightly *sighs*
Thanks for the answers.
Regards,
Kevin
On Aug 24, 3:39 pm, kr...@boerse-go.de obsidia...@googlemail.com
wrote:
Hi all,
I am using the Hessian web protocol[1] or rather more the Android port
Hessdroid[2] to fetch and unserialize objects from a web server. It
works quite well but unfortunately I get this message:
W/SerializerFactory( 1071): Hessian/Burlap: 'NewsSetCategory' is an
unknown class in dalvik.system.pathclassloa...@43227dd0:
W/SerializerFactory( 1071): java.lang.ClassNotFoundException:
NewsSetCategory
when actually unserializing an object. The code within the library
that throws the warning is:
try {
Class cl = Class.forName(type, false,
getClass().getClassLoader());
deserializer = getDeserializer(cl);
} catch (Exception e) {
log.warning(Hessian/Burlap: ' + type + ' is an unknown
class in + getClass().getClassLoader() + :\n + e);
log.log(Level.FINER, e.toString(), e);
}
I guess the problem is that the class NewsSetCategory resides in a
package and so cannot be loaded without the whole package name by the
ClassLoader but this is a bling guess.
Is there a way to adapt the class path or to easily create a new
PathClassLoader that will load classes directly from the package? Or
does anybody else have any experience with Hessian on Android?
Thanks a lot,
Kevin
[1]http://hessian.caucho.com/
[2]http://code.google.com/p/hessdroid/
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Re: [android-developers] Re: Unserializing objects via the Hessian web protocol leads to ClassNotFoundException
26.08.2010 14:24, Kevin Read ?: I'll try to shoehorn the PHP class names into the fully qualified Java class name. The issue here is that the web service is also used by the iPhone client, where the deserialization is completely custom-built, so I'll have to tread lightly*sighs* I think it's easier to fix it on the client (Android) side. Put all Hessian-izable objects in one package, and make a change in the piece of code you posted earlier to always add the package name. No changes to the PHP side - no worries about breaking the iPhone client. -- Kostya Vasilyev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Unserializing objects via the Hessian web protocol leads to ClassNotFoundException
You can never load a class without its package name.
The message is saying that a class in the null package named
NewsSetCategory cannot be found. Since classes in the null package
are characteristic of toy applications, NewsSetCategory is probably
a toy application on the source platform and is missing on the
phone.
On Aug 24, 3:39 pm, kr...@boerse-go.de obsidia...@googlemail.com
wrote:
Hi all,
I am using the Hessian web protocol[1] or rather more the Android port
Hessdroid[2] to fetch and unserialize objects from a web server. It
works quite well but unfortunately I get this message:
W/SerializerFactory( 1071): Hessian/Burlap: 'NewsSetCategory' is an
unknown class in dalvik.system.pathclassloa...@43227dd0:
W/SerializerFactory( 1071): java.lang.ClassNotFoundException:
NewsSetCategory
when actually unserializing an object. The code within the library
that throws the warning is:
try {
Class cl = Class.forName(type, false,
getClass().getClassLoader());
deserializer = getDeserializer(cl);
} catch (Exception e) {
log.warning(Hessian/Burlap: ' + type + ' is an unknown
class in + getClass().getClassLoader() + :\n + e);
log.log(Level.FINER, e.toString(), e);
}
I guess the problem is that the class NewsSetCategory resides in a
package and so cannot be loaded without the whole package name by the
ClassLoader but this is a bling guess.
Is there a way to adapt the class path or to easily create a new
PathClassLoader that will load classes directly from the package? Or
does anybody else have any experience with Hessian on Android?
Thanks a lot,
Kevin
[1]http://hessian.caucho.com/
[2]http://code.google.com/p/hessdroid/
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[android-developers] Re: Unserializing objects via the Hessian web protocol leads to ClassNotFoundException
No, it is in a related project, as in Eclipse required projects on the build path. On Aug 24, 10:51 pm, Kostya Vasilyev kmans...@gmail.com wrote: Do you have this class defined in the Android application? -- Kostya Vasilyev --http://kmansoft.wordpress.com 25.08.2010 0:39 пользователь kr...@boerse-go.de obsidia...@googlemail.com написал: Regards, Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Unserializing objects via the Hessian web protocol leads to ClassNotFoundException
Um, what I really meant to say is, is this class available at runtime in the application? Sounds like it's not, and that's causing the error. You need to make sure this class is available for instantiation when the server response is deserialized, under the same name as in the response. -- Kostya Vasilyev -- http://kmansoft.wordpress.com 25.08.2010 0:58 пользователь kr...@boerse-go.de obsidia...@googlemail.com написал: No, it is in a related project, as in Eclipse required projects on the build path. On Aug 24, 10:51 pm, Kostya Vasilyev kmans...@gmail.com wrote: Do you have this class defined i... 25.08.2010 0:39 пользователь kr...@boerse-go.de obsidia...@googlemail.com написал: Regards, Kevin -- You received this message because you are subscribed to the Google Groups Android Developers group... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
