Session Textbox

[Rakesh Keerthi]

Hi,
i want to make a textbox to a session one as i want to use it in all my web app. here there are 2 textboxs named Allocation and tgt1. once i click a button the value in first textbox gets copied to the second textbox(which is going fine) and i want to use this textbox in session as the next page is taking its reference to update the database. the code that i tried so far is as below.

the jsp used to move the values is

function move(){

 document.getElementById('tgt1').value = document.getElementById('Allocation').value;
 document.getElementById('Allocation').value="";
 document.getElementById("Send").disabled=true;
}

the textboxes are

<input type="text" name="Allocation" size="75" id="Allocation" value="<%=rs.getString("DBID")%>" readonly="readonly">//first textbox
<input type="Submit" value="Allocate" id="Send" onClick="move();"/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<input type="text" id="tgt1" name="tgt1" size="100">//Second textbox
            <%session.setAttribute("abc", request.getParameter("tgt1"));%>

the code to retrieve data used in another jsp to display data is

<input type="text" name="Comp_Text" id="Comp_Text" value="<%=session.getAttribute("abc")%>"/>//this is displaying null


and in servlet i used:

String ab=(String)session.getAttribute("abc");


please help me to reslove it.

Thanks

[Seetharaman Venkatasamy]

at the time of setting value into session, print the value. i.e,

<%
session.setAttribute("abc", request.getParameter("tgt1"));
System.out.println("abc :::: "+request.getParameter("tgt1"));// do you get the value?
%>

It's common illusion to a developer to think scriptlet executes after the html code processing.

[Rakesh Keerthi]

Hi Seetharaman,

It is showing null when i do it. i'm using javascript(which i think is a client side one) so i need to do it in the server side if i'm assigning a session to allocation textbox directly it is working fine(session.setAttribute("abc", request.getParameter("Allocation"));), but, i'm unable to know how to do it for the text in tgt1(second text box) as it is copied using a javascript.

Thanks

[Seetharaman Venkatasamy]

Ok, you copy the value from one textbox to another via javascript. now you are submitting this form to another which contains below fragment

<input type="text" name="Comp_Text" id="Comp_Text" value="<%=session.getAttribute("abc")%>"/>

before this are you calling any servlet(or any intermediate component), if yes set there else(directly submitting to another jsp) ,
then the value will be in request param, you have to use as in

<input type="text" name="Comp_Text" id="Comp_Text" value="<%=request.getParameter("tgt1")%>"/>

[or]

<% session.setAttribute("abc", request.getParameter("tgt1")); %>//setting before access
<input type="text" name="Comp_Text" id="Comp_Text" value="<%=session.getAttribute("abc")%>"/>

by the way: If possible, please avoid scriptlet .

[Seetharaman Venkatasamy]

value="<%=request.getParameter("tgt1")%>"/>

here expression has " it may conflict with value attributes " . so use like below:

value='<%=request.getParameter("tgt1")%>'/>

<edit>
here it wont be a problem, since scriptlet executes far before html. but you may have problem when you start using tags....
</edit>

[Rakesh Keerthi]

it is still pulling null