ZK - Open Source Ajax Java Framework

Executions.getCurrent().getSession().getNativeSession();
               //or   Sessions.getSession.getNativeSession();

public void onClick$btn1(){
				Iframe iframe = new Iframe();
				mb.setImageName(rs.getString("image"));
				String dwfImage = mb.getImageName();
				
				System.out.println("file name............."+dwfImage);
				session.setAttribute("imgDWFPath", dwfImage);
				System.out.println("file name......GET......."+session.getAttribute("imgDWFPath"));
				
				//acceptFile.detach();
				iframe.setWidth("100%");
				iframe.setHeight("100%");
				iframe.setSrc("/jsp/dwfJSP.jsp");
				iframe.setParent(divIframe);

}

	<script language="javascript"  type="text/javascript" for="ADViewer" event="OnUpdateUiItem(type, state, data)">
				
             if (type == "OBJECTPROPERTIES")
             {
            	var xmlHttpAjax;
            	objProps = data;
                if ( objProps )
                {
                    //propStr = ObjectProperties.innerHTML;
                    propStr = "";
                    nObjs = objProps.Count;
                    for (i=1; i <= nObjs; i++ )
                    {
                        prop = objProps.Item(i);
                        if ( prop )
                        {
                            propStr += prop.Name + ": " + prop.Value + "     ";
                        }
                    }
                    //ObjectProperties.innerHTML = propStr + "<p>";
                    
					//alert("PropStr : "+propStr);
					
					xmlHttpAjax = new ActiveXObject("Microsoft.XMLHTTP");  
			    	var url="/cat/jsp/ajaxDWFJsp.jsp"+"?propStr="+propStr;
					xmlHttpAjax.open("GET",url,true);	
					xmlHttpAjax.setRequestHeader('content-type','application/x-www-form-urlencoded');
					xmlHttpAjax.send(null);    				
                }
             }
        </script>
<div id="test">
					<object id="ADViewer" classid="clsid:A662DA7E-CCB7-4743-B71A-D817F6D575DF"
							codebase="http://www.autodesk.com/global/dwfviewer/installer/DwfViewerSetup.cab#version=7,0,0,928"
							width="100%" height="700" > 
							<param name="Src" value="/cat/img/small.dwf"/>
						</object>
						<%String str = (String) session.getAttribute("imgDWFPath");
						System.out.println("attr : "+str);
						%>			
						<script type="text/javascript" language="javascript">
							url="/cat/DwfFile/"+'<%= str %>';
							ADViewer.SourcePath=url;							
				        </script>
            		</div>

<%
	String para = request.getParameter("propStr");	
	session.setAttribute("propString", para);%>

public void run()
	{
HttpSession s=(HttpSession)Sessions.getCurrent().getNativeSession();
}

public class ZulJspViewCtrl extends GenericForwardComposer {
	
	private Include jspinclude;
	private Button btnFirst;
	
	private Desktop _desktop;
	
	/**
	 *
	 */
	@Override
	public void doAfterCompose(Component comp) throws Exception {
		super.doAfterCompose(comp);
		_desktop = Executions.getCurrent().getDesktop();
	}
	
	public void onClick$btnFirst() {
		// TODO: please check if you have use "self" or zscript functions here.
		jspinclude.setSrc("/jsp/jspzul.jsp");
		try {
			CometServerPush.start(btnFirst);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

class CometServerPush {
	
	public static void start(Component btnFirst) throws InterruptedException {
		final Desktop desktop = Executions.getCurrent().getDesktop();
		
		if (desktop.isServerPushEnabled()) {
			Messagebox.show("Already started");
		} else {
			desktop.enableServerPush(true);
			new WorkingThread(btnFirst).start();
		}
	}
	
	public static void stop() throws InterruptedException {
		final Desktop desktop = Executions.getCurrent().getDesktop();
		if (desktop.isServerPushEnabled()) {
			desktop.enableServerPush(false);
		} else {
			Messagebox.show("Already stopped");
		}
	}
	
	private static class WorkingThread extends Thread {
		
		private final Desktop _desktop;
		// private final Component _info;
		private final Button _btnFirst;
		
		private WorkingThread(Component btnFirst) {
			_desktop = btnFirst.getDesktop();
			_btnFirst = (Button) btnFirst;
		}
		
		public void run() {
			try {
				while (true) {
					if (_btnFirst.getDesktop() == null
							|| !_desktop.isServerPushEnabled()) {
						
						_desktop.enableServerPush(false);
						return;
					}
					Executions.activate(_desktop);
					try {
						process();
					} finally {
						Executions.deactivate(_desktop);
					}
					Threads.sleep(1000);
				}
			} catch (DesktopUnavailableException ex) {
				System.out.println("The server push thread interrupted");
			} catch (InterruptedException e) {
				System.out.println("The server push thread interrupted");
			}
		}
		
		public void process() {
			
			try {
				HttpSession hses = (HttpSession) _desktop.getSession().getNativeSession();
				System.out.println("HttpSession.........."+hses.getAttribute("propString"));
				
			} catch(NullPointerException e) {
				System.out.println("Null error.........."+e);
			}
		}
		
	}
}

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
	<script type="text/javascript">
		function btnFirstCall() {
                       <%
				session.setAttribute("propString", "First Click");
			%>
		}

		function btnSecondCall() {
                       <%
				session.setAttribute("propString", "Second Click");
			%>
		}

	</script>

</head>
<body>
	<h1> JSP to ZUL </h1>
	<form>
		<input type="button" value="First" name="btnFirst" onClick="btnFirstCall();">
		<input type="button" value="Second" name="btnSecond" onClick="btnSecondCall();">
	</form>
</body>
</html>

JavaScript function

<script type="text/javascript">
		function btnFirstCall() {

			var xmlHttpAjax;
			var propStr = "First Button Click";
			
			if (window.XMLHttpRequest)
			{
				// code for IE7+, Firefox, Chrome, Opera, Safari
				xmlHttpAjax = new XMLHttpRequest();
			}
			else if (window.ActiveXObject)
			{
				// code for IE6, IE5
				xmlHttpAjax = new ActiveXObject("Microsoft.XMLHTTP");
			}
			else
			{
				alert("Your browser does not support XMLHTTP!");
			}			
  
			var url="/zkjsp/jsp/ajaxDWFJsp.jsp"+"?propStr="+propStr;
			xmlHttpAjax.open("GET",url,true);	
			xmlHttpAjax.setRequestHeader('content-type','application/x-www-form-urlencoded');
			xmlHttpAjax.send(null);
		}

		function btnSecondCall() {

			var xmlHttpAjax;
			var propStr = "Second Button Click";


			if (window.XMLHttpRequest)
			{
				// code for IE7+, Firefox, Chrome, Opera, Safari
				xmlHttpAjax = new XMLHttpRequest();
			}
			else if (window.ActiveXObject)
			{
				// code for IE6, IE5
				xmlHttpAjax = new ActiveXObject("Microsoft.XMLHTTP");
			}
			else
			{
				alert("Your browser does not support XMLHTTP!");
			}
			  
			var url="/zkjsp/jsp/ajaxDWFJsp.jsp"+"?propStr="+propStr;
			xmlHttpAjax.open("GET",url,true);	
			xmlHttpAjax.setRequestHeader('content-type','application/x-www-form-urlencoded');
			xmlHttpAjax.send(null);
		}

	</script>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
	String para = request.getParameter("propStr");	
	session.setAttribute("propString", para);
%>