Open JSP

[Former Member]

Hi all.

I'm trying to open a jsp file and pass a collection of objects in the session as the following code:

Vector v = new Vector();

for(int i=0; i<[SOME SIZE]; i++){v.add(<OBJECT i>);}

HttpServletRequest req = ((IWebContextAdapter)WDWebContextAdapter.getWebContextAdapter()).getHttpServletRequest();

req.getSession().setAttribute("vector",v);

Then in the JSP i'm doing this:

<%

java.util.Vector v = (java.util.Vector)session.getAttribute("vector");

try{

[PROCESS THE VECTOR]

} catch(Exception e){[HANDLE EXCEPTION]} %>

Well the exception catched is that the vector is null, the session hasnt attributes.

What can i do?

Best Regards

Gregory.

[kishorg]

Hi Gregory,

just set the required vector in session like this,

Vector v = new Vector();

for(...)

{

//fill values in vector.

}

request.getSession().setAttribute("vectorBean",v);

then in JSP page u can access this like this,

<b><jsp:useBean id="vectorBean" scope="session" class="java.util.Vector" /></b>

for(int c=0;c<vectorBean.size();c++)

{

//loop through each element

}

Regards

Kishor Gopinathan

[Former Member]

Hi Yash and Kishor.

I tried both solutions u give, but i dont have results, with the first the jsp does the same and with the second the vector is empty.

Best regards.

Gregory

[former_member182372]

Hi Gregory,

May be it is not really good idea to use HTTP session as protocol for data transfer from dynpro to jsp. Not sure whether sessoins are same. Try to use transient user attributes instead.

Best regards, Maksim Rashchynski.

[Former Member]

Hi Maksim, thx for ur answer.

Can u extend more on "Try to use transient user attributes instead", please?

I dont know well how to do this.

Best Regards.

Gregory.

[former_member182372]

Hi Gregory,

Check this http://media.sdn.sap.com/html/submitted_docs/60_sp2_javadocs/ume/com/sap/security/api/IUser.html#set..., java.lang.String, java.lang.Object)

<i>

getTransientAttribute

setTransientAttribute

</i>

Best regards, Maksim Rashchynski.

[Former Member]

I have a question:

Can i use this in the JSP? i tried to use the user with the instruction request.getRemoteUser() and obtain null.

If so, how can i use it?

how can i know the user of the wdp app into the jsp to use those methods?

I hope u can help me...

Thx and Regards.

Gregory.

[former_member182372]

Hi Gregory,

Try this

//HttpServletRequest request
//HttpServletResponse response
IUser sapUser = UMFactory.getAuthenticator().forceLoggedInUser(request, response);

Best regards, Maksim Rashchynski.

[Former Member]

Hi Maksim.

I try with this methods but the vector is still null into the jsp.

I'm using "" or null to the namespace that set/get transient attribute method uses. Is it correct?

Thx a lot.

Best regards.

[former_member182372]

Hi Gregory,

How do you integrate you Web Dynpro and JSP?

Best regards, Maksim Rashchynski.

[Former Member]

Hi Maksim.

I tried to integrate webdynpro app and the jsp simply opening an external window.

I thought that the jsp in the external window has the session attributes of the wdp, then before opening the external window i set the attribute to the session.

Thx and Regards.

Gregory.

[Former Member]

Please i need some help on that.

Thx.

Regards.

Gregory.

[Yashpal]

Hi Gregory,

instead of req.getSession().setAttribute(....);

use req.getSession(true).setAttribute(.....);

because this method return an httpsession object even when a sessio oject is not assocaiated with an request ... i hope it will solve ur problem.

Regards,

Yash