Print a value using JSP and Expression Language (EL)

Question

I have a servlet, and I want to print some data from the servlet with a JSP file, and I have to use compulsory the Expression Language.

I have this code in the servlet:

String saludo="hi";  
req.setAttribute("exito",saludo);

And I have this in my JSP file:

${exito}

And I also tried with this:

${requestScope.exito}

But when I try to see it with my browser (Google Chrome), instead of seeing hi, I see

${exito}

What am I doing wrong?

duplicate of [Expression Language in JSP not working](http://stackoverflow.com/questions/2168832/expression-language-in-jsp-not-working) — Sotirios Delimanolis, Dec 10 '13 at 22:03
try JSTL include <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> then try — user1769790, Dec 11 '13 at 01:24

score 2 · Accepted Answer · answered Dec 11 '13 at 03:40

When you are sending information to the JSP you need to dispacth the current request to the JSP, I try the above code and I don't have any problem, this is my code:

protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

    String saludo="hi";  
    req.setAttribute("exito",saludo);
    req.getRequestDispatcher("MyPage.jsp").forward(req, resp);
}

And this is the code for MyPage.jsp

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Title</title>
</head>
<body>
    ${exito}
</body>
</html>

Thank you very much. My problem was with the Dispatcher, i have it on another way, i tried your code and it worked fine. Thanks again — Iván Rodríguez Torres, Dec 15 '13 at 17:19

Print a value using JSP and Expression Language (EL)

1 Answers1