How to Send Parameters from One JSP to Another using Links?

[Somnath Mallick]

Hi Everyone,

I have a main jsp page which has seven links! So i want the main page to forward a parameter to another jsp according to the link clicked! I mean each link should send a different parameter value to the second page! Is there anyway we can do that? I read something about html:link but i did not get the exact syntax of it! Could you please tell me how?

[Ankit Garg]

If you just have static links, then you can directly add parameters to the requested JSP's URL like this

<a href="target.jsp?param=value1">link 1</a><br/>
<a href="target.jsp?param=value2">link 2</a><br/>
<a href="target.jsp?param=value3">link 3</a><br/>
<a href="target.jsp?param=value4">link 4</a><br/>
<a href="target.jsp?param=value5">link 5</a><br/>
<a href="target.jsp?param=value6">link 6</a><br/>
<a href="target.jsp?param=value7">link 7</a><br/>

If you want to use the html:link tag (which I think is available in struts), then you can read this...

[Somnath Mallick]

But how do i differentiate from them in the next page and retrieve which value came through? They don't have a name (as in a variable name or something)!

[Ankit Garg]

If you notice the query string in the links, it is like ?param=value. The param here is the name of the request parameter and value is the value of this parameter. You can use request.getParameter("param") to get this value in your servlet...

[Somnath Mallick]

Oh thanks! I thought param was a fixed name!

[Max Rahder]

The JSP can also use EL to read the param value. I.e., target.jsp could use ${param.param} to get the value of the parameter named "param". In your example this would return "value1" through "value7", depending on which link the user clicked on. The syntax is ${param.a}, where "a" is the name of the parameter whose value you want.

[Bear Bibeault]

Somnath Mallick wrote:Oh thanks! I thought param was a fixed name!

If you are going to be working with web apps, I'd suggest becoming more familiar with HTTP concepts.

[Somnath Mallick]

Bear Bibeault wrote:

Somnath Mallick wrote:Oh thanks! I thought param was a fixed name!

If you are going to be working with web apps, I'd suggest becoming more familiar with HTTP concepts.

Could you please mention some pdf's where i can clear out these out concepts. It would be of great help!

[Bear Bibeault]

Google: HTTP Specification

[ahalya priya]

May be some of these links will get clear understanding

http://roseindia.net/jsp/simple-jsp-example/ConditionalForwardUsingEL.shtml

http://roseindia.net/jsp/simple-jsp-example/RequestParametersInEL.shtml