CODEWITHSUNDEEP
javascriptjsp
nikhil
nikhil

Reputation: 9363

Pass Data from one jsp page to another jsp page

I have two pages (page1.jsp and page2.jsp). in page1.jsp i retrieve some values from database and display hyperlinks corresponding to those values. Now what i want is when i click any of those hyperlinks, in page2.jsp i should display other fields coressponding to the vlaue from the database. So what i essentially want is when a link is clicked the associated value must be passed to page2.jsp where i query the database to retrieve other fields.

Upvotes: 1

Views: 11118

Answers (3)

BalusC
BalusC

Reputation: 1108632

when a link is clicked the associated value must be passed to page2.jsp where i query the database to retrieve other fields

So, you want to preprocess the HTTP request before displaying the JSP? For that you need a servlet.

Assuming that the links in page1.jsp are displayed like follows:

<ul>
    <c:forEach items="${ids}" var="id">
        <li><a href="page2?id=${id}">View data for ID ${id}</a></li>
    </c:forEach>
</ul>

Then you will be able to preprocess the HTTP request in the doGet() method of a HttpServlet which is listening on an <url-pattern> of /page2:

Long id = Long.valueOf(request.getParameter("id"));
Data data = dataDAO.find(id);
request.setAttribute("data", data); // Will be available as ${data} in JSP.
request.getRequestDispatcher("/WEB-INF/page2.jsp").forward(request, response);

In page2.jsp you will be able to access the data as follows:

<p>The data for ID ${param.id} is:</p>
<p>Field 1: ${data.field1}</p>
<p>Field 2: ${data.field2}</p>

See also:

Upvotes: 1

Ruan Mendes
Ruan Mendes

Reputation: 92274

lIf you are talking about a variable that can't be serialized as a string and passed as an http parameter, as suggested, then you need to store the variable within the session.

--page1.asp
<?
session.setAttribute( "val", record );
?>


--page2.asp

<?
//Cast this to your type
Object record = session.getAttribute("val");

// Clean it up now that you're done
session.removeAttribute( "val" )
?>

Upvotes: 0

wajiw
wajiw

Reputation: 12269

You can do that by either passing GET or POST variables to the corresponding jsp page and reading them using jsp:

using GET method:

<a href="page2.jsp?datatobesend=value">link</a>

If you want to do this dynamically you will have to add to that on click using javascript:

GET using jQuery js library:

<script>
$(document).ready(function(){
  $('#mylink').click(function(){
    $(this).attr('href', $(this).attr('href')+'?datatobesend=value');
 });
});
</script>
<a href="page2.jsp" id="mylink">link</a>

There are many ways to use GET/POST to send data from one page to another, this is just as quick as I could write one up :-) Using form submissions are another place you should look into if this way doesn't work out for you.

Upvotes: 0

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