Hi, I already use the json plugin. I have written a new action to test the plugin and it works fine - I get my json result. But for some reason it doesn't work with the existing action (I didn't write this action).
Here's what I did: * Installed the json plugin by copying it into WEB-INF/lib * Added a mapping to struts.xml which refers to the existing action but has a json result type and a different name. * Added the getJsonData() method to the action with "return execute();" in the body. Now I can call the action by it name "myJsonData.action" but it only returns "success". -------- Original-Nachricht -------- > Datum: Tue, 27 Oct 2009 12:56:51 -0700 (PDT) > Von: Struts Two <struts...@yahoo.ca> > An: Struts Users Mailing List <user@struts.apache.org> > Betreff: Re: RE: Adding Json to existing action > What I meant was either to use Json Plugin for struts 2. Read the > following Wiki page: > > http://cwiki.apache.org/WW/json-plugin.html > > The JSON plugin is bundled with Struts since 2.1.7. Or you can write your > customized Struts 2 Result type for JSON and register it in your > struts2.xml for use [does not make sense to do that if you are using 2.1.7+]. > > To learn how to do that, take a look at the a sample provided in struts 2 > in action. That should do it as well. > > Hope this helps. > > > > > --- On Tue, 10/27/09, Michael Varlik <m.var...@gmx.de> wrote: > > > From: Michael Varlik <m.var...@gmx.de> > > Subject: Re: RE: Adding Json to existing action > > To: "Struts Users Mailing List" <user@struts.apache.org> > > Received: Tuesday, October 27, 2009, 3:50 PM > > I just noticed a mistake I made. When > > adding the parameter to the result I also have to add a > > getJsonData() method to the action, right? > > I have added this method which actually calls execute(). > > Now I don't get "null" as a result anymore but I get > > "success" which is also not what I expected. > > > > I guess I have missed something. Since this is the first > > time I use struts, I have no idea what I did wrong. Any > > hints are appreciated. > > > > Cheers, > > Markus > > > > -------- Original-Nachricht -------- > > > Datum: Tue, 27 Oct 2009 16:09:25 +0100 > > > Von: "Michael Varlik" <m.var...@gmx.de> > > > An: "Struts Users Mailing List" <user@struts.apache.org>, > > user@struts.apache.org > > > Betreff: Re: RE: Adding Json to existing action > > > > > Thanks for that hint. I have extended my mapping by > > adding "<param > > > name=root>jsonData</param>" to my action > > mapping's result tag. Now I don't get any > > > Exception and the server log looks just fine. However, > > the value returned > > > by the action is just "null". > > > Do you have any idea what could be wrong here? > > > > > > Cheers, > > > Markus > > > > > > -------- Original-Nachricht -------- > > > > Datum: Tue, 27 Oct 2009 09:39:01 -0400 > > > > Von: "Mike Baranski" <list-subscripti...@secmgmt.com> > > > > An: "\'Struts Users Mailing List\'" <user@struts.apache.org> > > > > Betreff: RE: Adding Json to existing action > > > > > > > I do this to pass parameters, using prototype > > js: > > > > > > > > <s:set name="foo" value="%{'door' + > > door.id}"/> > > > > <s:set name="form_name" > > value="%{'form_door' + door.id}"/> > > > > > > > > <s:set > > name="door_description" value="getText(#foo)"/> > > > > <s:if test="door.state == > > 1"> > > > > <s:url > > id="door_url" action="unlock"><s:param name="door.id" > > > > value="door.id"/></s:url> > > > > <s:form > > method="POST" action="unlock" id="%{#form_name}" > > > > onsubmit="return false;"> > > > > > > <s:hidden name="door.id"/> > > > > > > <s:hidden name="door.state"/> > > > > > > <s:url var="locked_image" > > > > value="/pages/door-control/images/locked.png" > > /> > > > > > > <s:submit type="image" alt="Locked" > > > > src="%{locked_image}" onclick="%{'new > > Ajax.Updater(\\'' + #foo +'\\', > > > \\'' > > > > + > > > > #door_url + '\\', {evalScripts: true}); return > > false;'}"/> > > > > > > </s:form> > > > > > > > > </s:if> > > > > > > > > >-----Original Message----- > > > > >From: Struts Two [mailto:struts...@yahoo.ca] > > > > >Sent: Tuesday, October 27, 2009 9:24 AM > > > > >To: Struts Users Mailing List > > > > >Subject: Re: Adding Json to existing action > > > > > > > > > >You can either use Json plugin or write your > > own customized result type > > > > >that return JSON. > > > > > > > > > >--- On Tue, 10/27/09, Michael Varlik <m.var...@gmx.de> > > wrote: > > > > > > > > > >> From: Michael Varlik <m.var...@gmx.de> > > > > >> Subject: Adding Json to existing action > > > > >> To: user@struts.apache.org > > > > >> Received: Tuesday, October 27, 2009, > > 1:07 PM > > > > >> Hi, > > > > >> > > > > >> I need to call an existing struts action > > within my > > > > >> application from a > > > > >> JavaScript function. I thought it might > > be possible to > > > > >> create an additional entry in the struts > > mapping file like > > > > >> this: > > > > >> > > > > >> <action name="getDataJson" > > > > >> class="com.mypackage.MyAction" > > method="getData"> > > > > >> <result type="json" /> > > > > >> </action> > > > > >> > > > > >> and then call the action with > > "getDataJson.action". > > > > >> Unfortunately, when I try this a > > NullPointerException > > > > >> occurs in the action code. It seems, > > some parameters are not > > > > >> properly initialized. > > > > >> > > > > >> What I'd like to know is: what is the > > recommendet way of > > > > >> calling an existing action to get JSON > > results? Is it a good > > > > >> idea to do this at all? > > > > >> > > > > >> Cheers, > > > > >> Markus > > > > >> -- > > > > >> Neu: GMX DSL bis 50.000 kBit/s und 200,- > > Euro > > > > >> Startguthaben! > > > > >> http://portal.gmx.net/de/go/dsl02 > > > > >> > > > > >> > > --------------------------------------------------------------------- > > > > >> To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > > > > >> For additional commands, e-mail: user-h...@struts.apache.org > > > > >> > > > > >> > > > > > > > > > > > > > > > > > > > > __________________________________________________________________ > > > > >Looking for the perfect gift? 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