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copied!<p>I'm not sure what is meant with <code>prefix</code>, I assume you are referring to the servlet's name. Suppose you have this <em>forward</em> in your <code>struts-config.xml</code> as part of an <code>action</code> mapping:</p> <pre><code><forward name="test" path="/switch" /> </code></pre> <p>If you want to get the <em>forwards'</em> names available to your action, you can get them with <code>mapping.findForwards()</code>.</p> <p>If you already have a <code>forward</code>, for example:</p> <pre><code>ActionForward forward = mapping.findForward("test"); </code></pre> <p>you can get the name of the forward with:</p> <pre><code>String fwdName = forward.getName(); // returns "test" </code></pre> <p>and the servlet name or path with:</p> <pre><code>String servletPath = forward.getPath(); // returns "/switch.do" </code></pre> <p>you can also get it from the <code>request</code> object:</p> <pre><code>String servletPath = request.getServletPath(); </code></pre> <p>OK, now, if you want to modify the forward before returning control to Struts, so that you can append extra parameters, you'll need to create a new <code>ActionForward</code> based on one of the forwards defined in your <code>struts-config.xml</code>, like for example:</p> <pre><code>ActionForward forward = mapping.findForward("test"); StringBuilder path = new StringBuilder(forward.getPath()); path.append("?id="); path.append(someobject.getId()); return new ActionForward(path.toString(), true); // `true` means "do a redirect" </code></pre> <p>This would tell Struts to issue a redirect to an URL like <code>/switch.do?id=3</code></p> <p>Knowing how to create a new <code>ActionForward</code>, and how to get the names of the forwards and the servlet names they point to, you shouldn't have a problem constructing the forward that you need.</p>

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