将值从一个jsp传递到另一个

Question

First jsp page contains code:

<a href='select.jsp?param1=${person.name}'>link to other jsp</a>

In html this link refers to:

http://sitename/select.jsp?param1=gsdf

A code from select.jsp page:

<c:out value="${param1}">No name</c:out>
<br/><%=request.getParameter("param1")%>

But I get:

No name

gsdf

Why the value of param1 did not pass to second jsp in the case of using c:out ?

Answer 1

you need to use EL (JSP Expression Language).

from javaDoc :

param: Maps a request parameter name to a single value

so you juste need to do something like

<c:out value="${param.param1}"/>

Answer 2

You can send Using Session object.

session.setAttribute("prsonName", prsonName);

These values will now be available from any jsp as long as your session is still active.

Object userid = session.getAttribute("prsonName");