c:redirect not working?

Question

Hi folk,
I'm new to JSP. We use JSTL to parse XML file at work.
We use WebSphere and Java 1.4.x.
It seem the <c:redirect> tag is not working. Someone point out somewhere, that this is a know bug using WebSphere. But I still have doubt.
I'm more use to PHP and I was wondering if <c:redirect> tag work like the header() function in the sense that NO output should be send before using <c:redirect>?
Those <c:redirect> work using a HTML header to make the redirection?
Thank you!

Answer 1

Most likely no output should be sent AFTER using <c:redirect/>
This tag is equivalent of sendRedirect(java.lang.String location) method of javax.servlet.http.HttpServletResponse
http://java.sun.com/products/servlet/2.2/javadoc/javax/servlet/http/HttpServletResponse.html#sendRedirect(java.lang.String) :
Sends a temporary redirect response to the client using the specified redirect location URL. This method can accept relative URLs; the servlet container will convert the relative URL to an absolute URL before sending the response to the client.
If the response has already been committed, this method throws an IllegalStateException. After using this method, the response should be considered to be committed and should not be written to.