Error while calling webscript from dashlet?

dynamolalit — Thu, 24 Jun 2010 12:45:19 GMT

Hi,I have created a dashlet which will show top n content uploader.Here is my dashlet jsp for the same as below .kmContributions.jsp :<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> <%@ taglib uri="/WEB-INF/repo.

Re: Error while calling webscript from dashlet?

dynamolalit — Fri, 25 Jun 2010 12:14:12 GMT

Hi All,

Strange is the thing that if i remove all dashlets except my custom dashlet, then it is working fine without any error on browser & i can see html output on my dashlet? ops:

But i want all dashlets to be present on dashboard.

Any help/idea/suggestion? :idea:

Thanks in Advance.

Re: Error while calling webscript from dashlet?

dynamolalit — Tue, 29 Jun 2010 07:10:14 GMT

Hi Again,

On investigation i found the issue is due to intermingling of <f:verbatim> tags inside dashboard.

So I found a kinda workaround for it by forwarding to another page once results are got in jsp. :arrow:

topKmContributorSearch.jsp


<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="/WEB-INF/repo.tld" prefix="r" %>
<%@ page import="com.xxxx.alfresco.km.webscripts.WebScriptInvoker"%>
<%@ page import="com.xxxx.alfresco.km.webscripts.WebScriptCall"%> 
<%@ page import="java.lang.Integer"%> 
<%@ page import="com.xxxx.alfresco.km.property.KmPropertyReader"%> 

<%– JSP to get top KM content contributors in xxxx KM Sapce–%>

<f:verbatim>
<FORM id="form1" NAME="myform" ACTION="/jsp/extension/dashlets/topKmContributorSearch.jsp" METHOD="POST">   
             Number of KM Contributors : 
   <select id="number" name="number">
     <option id="number1" value="Select">Select</option>
     <option id="number2" value="5">5</option>
     <option id="number3" value="10">10</option>
     <option id="number4" value="15">15</option>
     <option id="number5" value="20">20</option>
     <option id="number6" value="25">25</option>
   </select>
   <p>
   Contributors' Location for Search : 
   <select id="location" name="location">
   <option id="location1" value="Select">Select</option>
     <option id="location2" value="all">All</option>
     <option id="location3" value="x">x</option>
     <option id="location4" value="xx">xx</option>
     <option id="location5" value="xxx">xxx</option>
   </select>
   <p>
                                                     <INPUT id="4" TYPE="submit" NAME="Search" Value="Search Contributors">

</FORM>
</f:verbatim>



<%! String number = null; %>
<%! String location = null; %>
<%! String result = null; %>

<%
   number = (String)request.getParameter("number");  
   System.out.println("Top KM Contributors in kmContributions.jsp : "+ number);
    location = (String)request.getParameter("location");  
   System.out.println("Location in kmContributions.jsp "+location);
   if(number == null || location == null || number.equalsIgnoreCase("Select") || location.equalsIgnoreCase("Select")){
      //Do Nothing
      System.out.println("Invalid Value");
   }else{
      // Call Webscript
      System.out.println("valid Value");
      KmPropertyReader kmPropertyReader = new KmPropertyReader();
      String adminUserName = kmPropertyReader.getProperty("admin.username");
      System.out.println("adminUserName : "+adminUserName);
      String adminUserPwd = kmPropertyReader.getProperty("admin.password");
      System.out.println("adminUserPwd : "+adminUserPwd);
      String webScriptUrl = kmPropertyReader.getProperty("topkmconrtibutors.webscripturl");
      //System.out.println("webScriptUrl : "+webScriptUrl);
      String fullWebScriptUrl = webScriptUrl+number+"&location="+location;
      System.out.println("Web Script URL Value in jsp : "+fullWebScriptUrl);
      WebScriptInvoker invoker = new WebScriptInvoker();
      result = invoker.doWork(adminUserName, adminUserPwd, "GET", fullWebScriptUrl);
      //System.out.println("result in jsp!!: "+result);
      request.setAttribute("result",result);
%>
      <f:verbatim >
      <jsp:forward page="/jsp/extension/dashlets/topKmContributorSearchResults.jsp"/>      
      </f:verbatim>      
<%   
   number = null;
   location = null;
   }
%>
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Now ,I am invoking webscript using WebScriptInvoker.java in jsp.


package com.xxxx.alfresco.km.webscripts;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;

import javax.faces.context.FacesContext;

import org.alfresco.model.ContentModel;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.cmr.security.PersonService;
import org.alfresco.util.Base64;
import org.alfresco.web.app.servlet.FacesHelper;
import org.alfresco.web.bean.NavigationBean;
import org.alfresco.web.bean.repository.Repository;
import org.alfresco.webservice.util.AuthenticationUtils;
import org.apache.log4j.Logger;

public class WebScriptInvoker {
   
   private static Logger logger = Logger.getLogger(WebScriptInvoker.class);
   //private static final String USAGE = "java WebScriptInvoker <username> <password> <HTTP method> <web script URL>";
   private static NodeService nodeService;
   private static PersonService personService;
    private String user;
    
   private String password;
    private String scriptUrlString;
    private String method;
    private String ticket;   
    private String usrName;
    
    
    
   public String doWork(String userName, String password, String method, String webScriptURL) {
      logger.debug("Inside doWork !!! : userName "+userName+" password "+password+" method "+method+" scriptURL "+webScriptURL);
      //String userPwd = getUserPassword();
      //logger.debug("userPwd here !!! : "+userPwd);
      //System.out.println("userPwd !!! : "+userPwd);
      String result;
       setUser(userName);
       setPassword(password);
       setMethod(method);
       setScriptUrl(webScriptURL);       
       logger.debug("userName !!!"+getUser()+" password "+getPassword()+" method "+getMethod()+" scriptURL "+getScriptUrl());
       
      HttpURLConnection conn = null;
      
      try {
         AuthenticationUtils.startSession(getUser(), getPassword());
         setTicket(AuthenticationUtils.getTicket());
         URL scriptUrl = (new URI(getScriptUrl())).toURL();
         logger.debug("Invoking Web Script : " + scriptUrl);
         
         conn = (HttpURLConnection)scriptUrl.openConnection();
         conn.setRequestMethod(getMethod());
         conn.setRequestProperty("Authorization", "Basic " + Base64.encodeBytes((getTicket()).getBytes()));
         //3.0 and later can do HTTP method tunneling
         conn.connect();         
         logger.debug("Response code: " + conn.getResponseCode());         
         BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(),"UTF-8"));   
         StringBuffer buffer = new StringBuffer();
         String line;
         while ((line = in.readLine()) != null) {
            buffer.append(line);
         }
         logger.debug("Web Script Output in doWork() "+buffer.toString());
         result = buffer.toString();
      } catch (Exception serviceException) {
         logger.error("Exception while invoking web script "+serviceException.getMessage());
           throw new RuntimeException("Problem invoking web script", serviceException);
       } finally {            
           // End the session
           AuthenticationUtils.endSession();
           if (conn != null) conn.disconnect();
       }
      // logger.debug("12");
       return result;
   }
   
   
   
   public String getPassword() {
      return password;
   }

   public void setPassword(String password) {
      this.password = password;
   }

   public String getUser() {
      return user;
   }

   public void setUser(String user) {
      this.user = user;
   }

   public String getMethod() {
      return method;
   }

   public void setMethod(String method) {
      this.method = method;
   }

   public String getScriptUrl() {
      return scriptUrlString;
   }

   public void setScriptUrl(String scriptUrl) {
      this.scriptUrlString = scriptUrl;
   }
   
   public String getTicket() {
      return ticket;
   }

   public void setTicket(String ticket) {
      this.ticket = ticket;
   }
   public static NodeService getNodeService() {
      return nodeService;
   }



   public static void setNodeService(NodeService nodeService) {
      WebScriptInvoker.nodeService = nodeService;
   }



   public static PersonService getPersonService() {
      return personService;
   }



   public static void setPersonService(PersonService personService) {
      WebScriptInvoker.personService = personService;
   }

}

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Now if i have some valid results in my jsp, i am redirecting to another jsp using code as below:

<f:verbatim >
<jsp:forward page="/jsp/extension/dashlets/topKmContributorSearchResults.jsp"/>
</f:verbatim>

But still user can not see results on same page which is my original intention. :roll:

If anybody knows a way to fix it,please let me know. :idea:

Thanks in advance.

Re: Error while calling webscript from dashlet?

bergerrc — Sun, 04 Jul 2010 23:31:04 GMT

I had a similar problem using <r:webscript> in user management page (/jsp/users/users.jsp). There are no errors on console neither on page, but the html content of webscript was not loaded. I had opened a issue for that but I already change the code as you can see here. My change was to call my webscript using ajax.

In users.jsp, include the javascripts to ajax handling and add a div or other object that will contain the content of webscript:


<script type="text/javascript" src="<%=request.getContextPath()%>/scripts/ajax/yahoo/yahoo/yahoo-min.js"> </script>
<script type="text/javascript" src="<%=request.getContextPath()%>/scripts/ajax/yahoo/connection/connection-min.js"> </script>
<script type="text/javascript" src="<%=request.getContextPath()%>/scripts/ajax/common.js"> </script>
<script type="text/javascript" src="<%=request.getContextPath()%>/scripts/webscript.ajax.js"> </script>

//DIV will be replaced by the static content of webscript
<div id="content_will_replaceme" />
‍‍‍‍‍‍‍‍‍

The code of webscript.ajax.js was shown here:


function printResult(response){
        var z = document.getElementById("content_will_replaceme");
   z.outerHTML=response.responseText;
}

function loadDefaults(){
   var z = document.getElementsById("content_will_replaceme");
   z.innerHTML="<img src='"+getContextPath()+"/images/icons/ajax_anim.gif'/>";
   YAHOO.util.Connect.asyncRequest("GET", getContextPath() + "/wcs/myScript", 
      { 
         success: printResult,
         failure: printResult
      }, 
      null);
}

if (window.addEventListener) { //Mozila
   window.addEventListener('load', loadDefaults, false); 
} else if (window.attachEvent) { //IE
   window.attachEvent('onload', loadDefaults);
}
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Error while calling webscript from dashlet?

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