How to compare the value in second jsp with another value that is passed from first jsp?

Question

I am using this html tag in my jsp page . As you see , I want to send sec_id to wall.jsp . but I dont know how exactly can I compare this sec_id with another id that available in wall.jsp in if statement.

<a href= wall.jsp?sec=<%= res.getInt("sec_id")%> > 

Answer 1

You can use JavaServer Pages Standard Tag Library or Expression Language that is more easy to use and less error prone.

sample code:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<c:set value="XYZ" var="anotherId"></c:set>

<c:if test="${param.sec.equals(anotherId)}">
     Matched
</c:if>

Here param.sec is used to access the value of sec from request parameter.

---

You can use <c:choose> as well that behave just like a Java Switch statement.

Find more examples...

Answer 2

you can even send the data setting it in session

session.setAttribute("sec_id", res.getInt("sec_id"));

In wall.jsp retrieve it from session

int sec_id= session.getAttribute("sec_id");

then compare the two id's like

if(wallJspId==sec_id){
//do something;
}
else{
//do something;
}