jsp bean problem

[Former Member]

Hi all,

i have a problem with two jsp pages.

Each jsp page is made using "Create new portal application object."

They use bean to communicate.

In the first one is selected something from a listbox, and the second one have to show what has been selected.

This doesn't work. I mean, i select something, but it is not shown in the other jsp page.

There are located in a Portal page.

If someone can help me with advice? why this doesn't work.

I will give more information if necessary.

Thank you very much in advance.

BR

[Former Member]

Hi,

Can you paste your code? Mayb its a prob with the code.

Regards,

Pooja.

[Former Member]

hi,

here is the code:

<b><u>listboxbean.java</u></b>

package Exercise4;
import java.io.Serializable;
import com.sapportals.htmlb.DefaultListModel;
public class listboxbean implements Serializable {

	public DefaultListModel model;
	public String selected;
	
	public DefaultListModel getModel() {
		return model;
	}
	public void setModel(DefaultListModel model) {
		this.model = model;
	}
//	   constructor
	public listboxbean() {
		this.model = new DefaultListModel();
		model.addItem("SAP R/3", "SAP R/3");
		model.addItem("SAP Portal", "SAP Portal");
		model.addItem("SAP BW", "SAP BW");
		this.model.setSingleSelection(true);
	}
}

<u><b>

listdisplay.java</b></u>

package Exercise4;

import Exercise4.listboxbean;
import com.sapportals.htmlb.*;
import com.sapportals.htmlb.enum.*;
import com.sapportals.htmlb.event.*;
import com.sapportals.htmlb.page.*;
import com.sapportals.portal.htmlb.page.*;
import com.sapportals.portal.prt.component.*;

public class listdisplay extends PageProcessorComponent {

  public DynPage getPage(){
    return new listdisplayDynPage();
  }

  public static class listdisplayDynPage extends JSPDynPage{
  
    public listboxbean myBeanName = null;
	private final static String BEAN_KEY = "myBeanName";
	private final static int INITIAL_STATE = 0;
	private final static int DISPLAY_SELECT = 1;
	private int state = INITIAL_STATE;
  
    public void doInitialization(){
		state = INITIAL_STATE;
	  	IPortalComponentContext ctxt = ((IPortalComponentRequest)getRequest()).getComponentContext();
	  Object o = ctxt.getValue(BEAN_KEY);
	  if(o==null || !(o instanceof listboxbean)){
	  myBeanName = new listboxbean();
	  ctxt.putValue(BEAN_KEY,myBeanName);
	  } else {
	  myBeanName = (listboxbean) o;
	  }
    }

    public void doProcessAfterInput() throws PageException {
		IPortalComponentContext ctxt =
		((IPortalComponentRequest)getRequest()).getComponentContext();
		myBeanName = (listboxbean) ctxt.getValue(BEAN_KEY);
		/* get the listbox by name. */
		ListBox lb = (ListBox) this.getComponentByName("SAP_Products");
		/* retrieve the selected item*/
		myBeanName.selected = lb.getSingleSelection();

    }

    public void doProcessBeforeOutput() throws PageException {
		switch (state) {
		  case INITIAL_STATE:
		     this.setJspName("listdisplay.jsp");
		     break;
		  case DISPLAY_SELECT:
		     this.setJspName("displayselect.jsp");
		     break;
		}
    }
    
	public void Select (Event event) throws PageException {
	/* Handles event from the listbox */
	state = DISPLAY_SELECT;
	}
  }
}

<u><b>listdisplay.jsp</b></u>
<%@ taglib uri= "tagLib" prefix="hbj" %>
<jsp:useBean id="myBeanName" scope="application" class="Exercise4.listboxbean" />
<hbj:content id="myContext" >
<hbj:page title="PageTitle">
<hbj:form id="myFormId" >
	<hbj:textView
		id="Products"
		text="SAP's software product"
		design="EMPHASIZED"
		/>
	<br>
	<hbj:listBox
		id="SAP_Products"
		tooltip="Select any SAP Products"
		size="3"
		width="100"
		model="myBeanName.model"
		onSelect="Select" >
	</hbj:listBox>
</hbj:form>
</hbj:page>
</hbj:content>

the page that display the slected from the previous page.

<u><b>displayselect.jsp</b></u>

<%@ taglib uri= "tagLib" prefix="hbj" %>
<jsp:useBean id="myBeanName" scope="application" class="Exercise4.listboxbean" />
<hbj:content id="myContext" >
<hbj:page title="PageTitle">
<hbj:form id="myFormId" >
<hbj:textView
	id="Products"
	text="You have selected:"
	design="EMPHASIZED"
	/>
<br>
<hbj:textView
	id="Products"
	text="<%=myBeanName.selected%>"
	design="EMPHASIZED"
	/>
<br>
</hbj:form>
</hbj:page>
</hbj:content>

And there is no code located for this jsp file in his java file

Thank you.

BR

[Former Member]

Hi,

I think its because you havent set state=DISPLAY_SELECT as the last line in your doProcessAfterInput() method. Try and see if it works.

Regards,

Pooja.

[Former Member]

hi, i tested it, but it doesn't work still.

The two jsp are in different iViews, is it possible this to be the reason?

thank you

[Former Member]

Hi,

Since you have created one portal component you'll need to create a single iview only. Try this and see if it works.

Regards,

Pooja.

[Former Member]

Hi,

Just a little correction of my explaination above:

there are 2 portal components in one par file.

BR

Diana

[Former Member]

Hi,

If you are using 2 iviews then you need to use portal eventing to pass data from one iview to another. Refer this link for more info:

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/documents/a1-8-4/enterpris...

Why are you using 2 components? The easier way is to include both your jsp pages in a single portal component and create one iview out of it.

Regards,

Pooja.

[Former Member]

Hi,

I wanted to do just the second as u say: the two jsp files to be in one component, but for some reason, i couldn't do it?

I will ber gratefull if u can tell me, what the step are , so the two jsp files to be in one component?

BR

Diana

[Former Member]

Hi,

If you want only one component, then create a JSPDynPage application. You have option to include bean. A JSP file will be created in pagelet folder. To include another JSP file right click on pagelet folder and select New->Other->J2EE->Web->JSP File. If this doesnt work you can create a .jsp file in your system and copy paste it to your pagelet folder in NDS.

Hope this helps.

Regards,

Pooja.