Struts2 mapping query

[Pradeep Adibatla]

This is a mapping related query...

Actually I have all mappings in struts.xml file and everything was going smooth.

I added some json stuff to my code and added a json mapping in struts.xml and I am unable to go to next page,I mean I move between pages on button clicks in my application;

After I added the json mapping, on click of a button a window pops up asking me to save the paricular action class or not instead of moving to next page...why is that so?

Here is my mapping information...
--------------------------------

 
I added this for json in struts.xml... 


<package name="default1" extends="json-default" > 
<action name="Cules" class="CulesModelAction" > 
<result type="json"> 
<param name="root">jsonData</param> 
</result> 
</action> 
</package> 



I also have the normal one... 


<struts> 
<include file="struts-default.xml"/> 
<!-- Configuration for the default package. --> 
<package name="default" extends="struts-default"> 

........................... 
............................ 

<action name="cules" class="CulesModelAction"> 
<result name="success">/jsp/tabtest.jsp</result> 
<result name="failure" >/jsp/cules.jsp</result> 
</action> 
</package> 

I get this one...
-------------------------------------------

Current policy properties 
thread.thread_num_limited: true 
file.write.state: disabled 
net.connect_ex_dom_list: 
mmc.sess_cab_act.block_unsigned: false 
mmc.sess_cab_act.action: validate 
mmc.sess_pe_act.block_blacklisted: false 
mmc.sess_pe_act.block_invalid: true 
jscan.sess_applet_act.stub_out_blocked_applet: true 
file.destructive.in_list: 
jscan.sess_applet_act.block_all: false 
file.write.in_list: 
file.nondestructive.in_list: 
window.num_limited: true 
file.read.state: disabled 
jscan.session.origin_uri: http://jsonplugin.googlecode.com/files/jsonplugin-0.32.jar 
file.nondestructive.state: disabled 
jscan.session.user_ipaddr: 10.81.82.131 
net.connect_other: false 
thread.thread_num_max: 8 
file.destructive.ex_list: 
file.nondestructive.ex_list: 
file.write.ex_list: 
jscan.sess_applet_act.sig_invalid: block 
file.read.in_list: 
mmc.sess_cab_act.block_invalid: true 
jscan.session.policyname: TU1DIERlZmF1bHQgUG9saWN5 
mmc.sess_pe_act.action: validate 
thread.threadgroup_create: false 
net.connect_in_dom_list: 
net.bind_enable: false 
jscan.sess_applet_act.sig_trusted: pass 
jscan.session.user_name: 10.81.82.131 
jscan.session.user_hostname: 
file.read.ex_list: 
jscan.sess_applet_act.sig_blacklisted: block 
jscan.session.daemon_protocol: http 
net.connect_src: true 
jscan.sess_applet_act.unsigned: instrument 
mmc.sess_pe_act.block_unsigned: false 
file.destructive.state: disabled 
mmc.sess_cab_act.block_blacklisted: true 
window.num_max: 5 

what could be it? If I remove that json mapping,I dont get this .Anything wrong with the mapping?

[David Newton]

Please stop posting the same question--if somebody knows the answer they'll tell you.

What does the jsonData look like? When I search the web for this type of issue I find a bunch of applet-related stuff.

[Pradeep Adibatla]

Thanks David! I felt my explanation was not good for not having received any response for my thread in such a rich forum...

By the by,I never knew it's being studied behind the scenes (Introducing a "Views" column in Javaranch would be a good indication of how thread is faring )

The json data looks(is prepared) like this...

  
JSONObject object=new JSONObject();

                JSONArray jsonArray = JSONArray.fromObject(atrHMap1);
                System.out.println("The array Vals are :--> "+jsonArray );

                object.put("attributes",jsonArray);

  

The above Hashmap contains a single value at this point...

[David Newton]

You might have to post the entire example; I've never seen this behavior, so I'd have to try it locally.

[Anbarasu Aladiyan]

David Newton wrote:You might have to post the entire example; I've never seen this behavior, so I'd have to try it locally.

As David Newton said it does not looks like struts mapping problem.

Pradeep Adibatla

   
JSONObject object=new JSONObject();

                JSONArray jsonArray = JSONArray.fromObject(atrHMap1);
                System.out.println("The array Vals are :--> "+jsonArray );

                object.put("attributes",jsonArray);

     

Are you trying to pass json to javascript? Then you can replace

  <package name="default1" extends="json-default" >    
<action name="Cules" class="CulesModelAction" >    
<result type="json">    
<param name="root">jsonData</param>    
</result>    
</action>    
</package>  

by

 <result name="success" type="stream">
				<param name="contentType">text/html</param>
				<param name="contentDisposition">inline;filename="response.html"</param>
				<param name="bufferSize">1024</param>
				<param name="allowCaching">false</param>
			</result>   

[David Newton]

Why would you want to do that (the mapping replacement)? You're not sending back HTML. The "json" result already defaults to something reasonable, and has its own "contentType" parameter.

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

[Pradeep Adibatla]

Yes I am passing json to javascript...

you mean,this should do??

  

<struts>    
<include file="struts-default.xml"/>    
<!-- Configuration for the default package. -->    
<package name="default" extends="struts-default">    
  
...........................    
............................    
  
<action name="cules" class="CulesModelAction">    
<result name="success1">/jsp/tabtest.jsp</result>    
<result name="failure" >/jsp/cules.jsp</result>    
<result name="success" type="stream">   
                <param name="contentType">text/html</param>   
                <param name="contentDisposition">inline;filename="response.html"</param>   
                <param name="bufferSize">1024</param>   
                <param name="allowCaching">false</param>   
</result>  


</action>    
</package>   
</struts>

  

what is "response.html" thr? is it the name of the file which is going to take json values??

[Pradeep Adibatla]

<param name="root">jsonData</param>   

I think the above one is incorrect....

I just picked up from an example and wrote "jsonData" as seen in between param tags above...

but I don't know what should exactly come there...

[David Newton]

Pradeep Adibatla wrote:but I don't know what should exactly come there...

Did you read the documentation at the link I posted? It should be the root object you're serializing to JSON and sending to the client.

[Anbarasu Aladiyan]

David Newton wrote:Why would you want to do that (the mapping replacement)? You're not sending back HTML. The "json" result already defaults to something reasonable, and has its own "contentType" parameter.

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

That's correct.

  < package name="default1" extends="json-default" > 

this line looks like changing the interceptors flow. Also in my last project i did it in the same way as i said, that is "Creating JSON" in action class using json plugin and streaming it to jsp pages.

[Pradeep Adibatla]

It should be the root object you're serializing to JSON and sending to the client.

I am unable to comprehend this precisely !!!

I want to populate all cities of the country selected,so,I prepared json for all cities based on country selected...

Now what is the root object that is being serialized to JSON and sent to client?? Little amateur but I should know...

--------------------------------------------------------------------------------------------------------------------------------------------------------------

Also in my last project i did it in the same way as i said, that is "Creating JSON" in action class using json plugin and streaming it to jsp pages.

So how did you stream the data to jsp after preparing the data?? By the way I didn't use any interceptors here...

Like I prepared like this in action.I have to select boxes one below the other. Intially I select a country from select box and based on the value I need to populate the cities associated into the second one.So,on selecting a country, I pass the value to action class via an Ajax call...
---------------------------------------------------------------------------------------------------------------------------------------------------------

   
if(selectedCountry!=null)   
       {   
           Country c=StorageBean.getCountryList().get(selectedCountry);    //this is passed from jsp via AJax call         
        
               atrHMap1=c.getCityList();         
            
                 JSONObject object=new JSONObject();   
  
                 JSONArray jsonArray = JSONArray.fromObject( atrHMap1 );   
                 System.out.println("The array Vals are :--> "+jsonArray );   
  
                 object.put("attributes",jsonArray);   
       }   

 

Now in jsp this is what I did to populate in second select...
-----------------------------

   

xmlhttp.onreadystatechange=function()   
   {   
     if(xmlhttp.readyState==4)   
     {   
          alert(xmlhttp.responseText);   
  
          var res=xmlhttp.responseText;   
          alert("res -->"+res);   
  
          var rslt=xmlhttp.responseText.evalJSON();   
          alert("rslt -->"+rslt);   
  
          var selectBox = document.getElementById('condAdrop');  //id of the select box   
  
          alert("select box is :--> "+selectBox);   
  
          selectBox.innerHTML = rslt.attributes;   
     }   
   }   

 

But I think all the problem is with mapping...

[David Newton]

I have no idea what object you're populating in your action. I think you're making this more difficult than it actually is.

A non-JSON action would expose properties which are available in the JSP, right? An action exposing JSON data works in the exact same way, but the root specified in the mapping is the *only* data that will be serialized to JSON and returned to the client. So if you had an action property named "cities" that would be your root.

[Anbarasu Aladiyan]

I want to populate all cities of the country selected,so,I prepared json for all cities based on country selected...

Then in action class:

   JSONArray jary = new JSONArray();
    	jary.add(0, MJSONO);
    	jary.add(1, count);
    	inputStream = new ByteArrayInputStream(jary.toString().getBytes()); 

in struts2 config file:

   <action name="atnname" class="com.xxxl.atnclass" method="method">
			<result name="success" type="stream">
				<param name="contentType">text/html</param>
				<param name="contentDisposition">inline;filename="response.html"</param>
				<param name="bufferSize">1024</param>
				<param name="allowCaching">false</param>
			</result>
		</action> 

In javascript:

   xmlhttp.onreadystatechange=function(){
		if(xmlhttp.readyState==4){
eval(xmlhttp.responseText);
alert(xmlhttp.responseText);
}
}
 

I think this will work

[David Newton]

That's *so* much extra, unnecessary work.

[Pradeep Adibatla]

Thanks for all those patient replies...

I am trying to populate city object(bean) called City...

So if you had an action property named "cities" that would be your root.

I have a hashmap of cities like...

  
  LinkedHashMap<String, City> atrHMap1;
   

    public LinkedHashMap<String, City> getAtrHMap1()
    {
         System.out.println("in getATrHMap1() !!! ");
         return atrHMap1;
    }

  

Now <param name="City" />  should do?

or

<param name="???"> ??? </param>

and also I don't even have a default1 package as seen...

  
< package name="default1" extends="json-default" >   
  

Since I already have a default package which has struts.xml it's not allowing the same package name.So I changed it to default1...

Even this is an issue I guess...

[Anbarasu Aladiyan]

David Newton wrote:That's *so* much extra, unnecessary work.

Thats correct, better we can go for Jquery select tag.

[David Newton]

You're missing the point: the JSON plugin does all the stuff you're doing automatically--I'm not talking about the client side. The client side doesn't care how the JSON is created.

[Pradeep Adibatla]

I think all is fine with server side... so is the mapping correct?