How to write a java backed dashlet in alfresco3.4.c

[rasharma]

Hello

I had downloaded alfresco 3.4.c and successfully added few custom dashlets helloworld and weather dashlet.
I need to write a java backed dashlet. I am trying from last 2 days without success.
Can not figure out where to place the class file of SimpleWebScript in share/webinf/classes or alfresco/webinf/classes.

Sample code of java backed dashlet will help.

Can anybody plz share sample code……

I was tring to add following sample:

package org.alfresco.module.demoscripts;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.extensions.webscripts.AbstractWebScript;
import org.springframework.extensions.webscripts.WebScriptException;
import org.springframework.extensions.webscripts.WebScriptRequest;
import org.springframework.extensions.webscripts.WebScriptResponse;

public class SimpleWebScript extends AbstractWebScript {
   public void execute(WebScriptRequest req, WebScriptResponse res)
         throws IOException {
      try {
         // build a json object
         JSONObject obj = new JSONObject();

         System.err
               .println("*************************************************");
         System.err.println("Rahul is here");
         System.err
               .println("*************************************************");
         // put some data on it
         obj.put("field1", "data1");

         File f = new File("C:\\Users\\rasharma\\Desktop\\test.txt");
         FileOutputStream fop = new FileOutputStream(f);

         if (f.exists()) {
            String str = "This data is written through the program";
            fop.write(str.getBytes());

            fop.flush();
            fop.close();
            System.out.println("The data has been written");
         }

         else
            System.out.println("This file is not exist");

         // build a JSON string and send it back
         String jsonString = obj.toString();
         res.getWriter().write(jsonString);
      } catch (JSONException e) {
         throw new WebScriptException("Unable to serialize JSON");
      }
   }
}

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<webscript>
  <shortname>The World's Simplest Webscript</shortname>
  <description>Hands back a little bit of JSON</description>
  <url>/components/dashlets/simple</url>
  <authentication>none</authentication>
  <family>dashlet</family>
</webscript>
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Thanks.
Rahul

[rasharma]

I am sorry but I am still not able to figure out how to do this?

Can anybody help?


Thanks…

[mrogers]

One option is to put your classes into shared/classes.
(so shared/classes/org/alfresco/module/demoscripts)

Another is to Jar all your extensions up and put the jar into shared/lib.
Or you can Deploy them as an AMPs.

[tommahy001]

Hi,

i have been looking for hours on how to do this.

I have used webscripts before. I have built java backed webscripts on spring surf before. This all worked fine.
But a simple java-backed dashlet web script does not work.

Here is what i have done.

ive got a class. simple.Active

public class Active extends DeclarativeWebScript{
    
    Map<String, Object> model = new HashMap<String, Object>();

    public Map<String, Object> executeImpl(WebScriptRequest req, WebScriptResponse res) throws IOException {
        
        model.put("content", "value");
        return model;

    }
}
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under webapps/share/WEB-INF/classes/org/springframework/extensions/webscripts/
i have a file web-scripts-application-context.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE beans PUBLIC '-//SPRING//DTD BEAN//EN' 'http://www.springframework.org/dtd/spring-beans.dtd'>

<beans>

    <bean id="webscript.site-webscripts.org.alfresco.components.dashlets.simple.active.active.get" 
            class="simple.Active" parent="webscript">
    </bean>
    
</beans>
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and i have the ftl and declaration under : webapps/share/WEB-INF/classes/alfresco/site-webscripts/org/alfresco/components/dashlets/simple/active/

two files:
active.get.desc.xml

<webscript>
    <shortname>active-dashlet</shortname>
    <description>active dashlet</description>
    <family>user-dashlet</family>
    <url>/active</url>
</webscript>
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and active.get.html.ftl

RESULT !!! <#if content?exists>${content}</#if>
‍‍‍

Dashlet appears in share just fine. Just it never gets into the java code.
I have tried jpda debugging, but no use since it doesnt get this far.

The class file is build and put into a jar under share/WEB-INF/lib/
Its there and doubled checked that the file is correct inside. I can see no problems.

any help would be appreciated.

Thank you

[michaelc]

I am no expert but 
  I call most of my back end processes as a service, looks like the method that is used in most areas of share.

  So from a page I may call my servlett that returns a JSON object. from the back end I can have a javascript module that will call the servlett as a restful service and receive back JSON.

[tommahy001]

Hi,

I see where you are coming from, but we want to minimize all contact to the backend.

I just dont see why it wouldnt work here and fine on a spring surf platform.
I thought share was build on spring surf.

[dejal33t]

Has anyone found a solution for this problem?