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Posted to user@struts.apache.org by Miguel Almeida <mi...@almeida.at> on 2016/12/01 19:07:33 UTC
Can you use type conversion with JSONInterceptor?
Imagine SearchAction{
private List<Record> evaluatedRecords;
}
Record is an interface so to get auto-wiring to work you'd usually
set-up a
SearchAction-conversion.properties:
KeyProperty_evaluatedRecords=id
Element_evaluatedRecords=com.bibliovigilance.model.RecordImpl
CreateIfNull_evaluatedRecords=true
I now want to create an Ajax post on this action. I tried the following:
var evaluatedRecords = [
{"id": "10672"}
]
var json_parameters = {evaluatedRecords:
evaluatedRecords};
$.ajax({
url: 'SearchmarkSelectedArticlesJSON.action',
cache: false,
contentType: 'application/json',
data: JSON.stringify(json_parameters),
type: "POST"
});
I believe I need to set-up the JSON interceptor on my action, so I
added:
<action name="SearchmarkSelectedArticlesJSON" class="searchAction"
method="markSelectedArticles">
<interceptor-ref name="json"/>
</action>
The problem is that this interceptor doesn't seem to be using the
-conversion.properties, so it throws an error when it tries to
instantiate the Record class:
java.lang.InstantiationException: com.bibliovigilance.model.Record
at java.lang.Class.newInstance(Class.java:368)
at
org.apache.struts2.json.JSONPopulator.convertToCollection(JSONPopulator.java:250)
I also tried removing the Record type in the List ( List
evaluatedRecords). But in this case the JSON deserialization of the
above mentioned ajax call will create a List evaluatedRecords with 1
element, but that element is a Map (I didn't investigate, but I suppose
it'll have id in the key and 10672 in the value).
How would we configure this correctly? Is it possible for the JSON
interceptor to be aware of the -conversion.properties? If not, what
alternatives do you envision?
Thanks!
Miguel
Re: Can you use type conversion with JSONInterceptor?
Posted by Lukasz Lenart <lu...@apache.org>.
Super cool, thanks :)
2016-12-02 11:40 GMT+01:00 Miguel Almeida <mi...@almeida.at>:
> Thank you Lukasz!
>
> I will check if/how we can inject the converter there. If we manage to
> get it working in a way that helps the ticket resolution I'll also post
> the information there.
>
>
>
> On Sex, 2016-12-02 at 09:50 +0100, Lukasz Lenart wrote:
>
>> Hi,
>>
>> JSON plugin uses its own conversation mechanism, check JSONPopulator
>> but I think it should be possible to inject XWorkConverter and use it
>> to convert objects - this requires implementing your own
>> JSONPopulator.
>>
>> There is a task to do it so it should happen in Struts 2.5 ;-)
>> https://issues.apache.org/jira/browse/WW-3364
>>
>>
>> Regards
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Re: Can you use type conversion with JSONInterceptor?
Posted by Miguel Almeida <mi...@almeida.at>.
Thank you Lukasz!
I will check if/how we can inject the converter there. If we manage to
get it working in a way that helps the ticket resolution I'll also post
the information there.
On Sex, 2016-12-02 at 09:50 +0100, Lukasz Lenart wrote:
> Hi,
>
> JSON plugin uses its own conversation mechanism, check JSONPopulator
> but I think it should be possible to inject XWorkConverter and use it
> to convert objects - this requires implementing your own
> JSONPopulator.
>
> There is a task to do it so it should happen in Struts 2.5 ;-)
> https://issues.apache.org/jira/browse/WW-3364
>
>
> Regards
Re: Can you use type conversion with JSONInterceptor?
Posted by Lukasz Lenart <lu...@apache.org>.
Hi,
JSON plugin uses its own conversation mechanism, check JSONPopulator
but I think it should be possible to inject XWorkConverter and use it
to convert objects - this requires implementing your own
JSONPopulator.
There is a task to do it so it should happen in Struts 2.5 ;-)
https://issues.apache.org/jira/browse/WW-3364
Regards
--
Łukasz
+ 48 606 323 122 http://www.lenart.org.pl/
2016-12-01 20:07 GMT+01:00 Miguel Almeida <mi...@almeida.at>:
> Imagine SearchAction{
>
> private List<Record> evaluatedRecords;
> }
>
> Record is an interface so to get auto-wiring to work you'd usually
> set-up a
>
> SearchAction-conversion.properties:
> KeyProperty_evaluatedRecords=id
> Element_evaluatedRecords=com.bibliovigilance.model.RecordImpl
> CreateIfNull_evaluatedRecords=true
>
>
> I now want to create an Ajax post on this action. I tried the following:
>
> var evaluatedRecords = [
> {"id": "10672"}
> ]
>
> var json_parameters = {evaluatedRecords:
> evaluatedRecords};
>
> $.ajax({
> url: 'SearchmarkSelectedArticlesJSON.action',
> cache: false,
> contentType: 'application/json',
> data: JSON.stringify(json_parameters),
> type: "POST"
> });
>
> I believe I need to set-up the JSON interceptor on my action, so I
> added:
> <action name="SearchmarkSelectedArticlesJSON" class="searchAction"
> method="markSelectedArticles">
> <interceptor-ref name="json"/>
> </action>
>
> The problem is that this interceptor doesn't seem to be using the
> -conversion.properties, so it throws an error when it tries to
> instantiate the Record class:
>
> java.lang.InstantiationException: com.bibliovigilance.model.Record
> at java.lang.Class.newInstance(Class.java:368)
> at
> org.apache.struts2.json.JSONPopulator.convertToCollection(JSONPopulator.java:250)
>
>
> I also tried removing the Record type in the List ( List
> evaluatedRecords). But in this case the JSON deserialization of the
> above mentioned ajax call will create a List evaluatedRecords with 1
> element, but that element is a Map (I didn't investigate, but I suppose
> it'll have id in the key and 10672 in the value).
>
> How would we configure this correctly? Is it possible for the JSON
> interceptor to be aware of the -conversion.properties? If not, what
> alternatives do you envision?
>
> Thanks!
>
> Miguel
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