trunk/apps/showcase/src/main/resources/struts-filedownload.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
	<include file="struts-default.xml" />

	<package name="filedownload" extends="struts-default" namespace="/filedownload">

        <default-action-ref name="download"/>

        <action name="download" class="org.apache.struts2.showcase.filedownload.FileDownloadAction">
			<result name="success" type="stream">
                <param name="contentType">image/jpeg</param>
                <param name="inputName">imageStream</param>
                <param name="contentDisposition">filename="logo.png"</param>
                <param name="bufferSize">4096</param>
            </result>
        </action>

    </package>
</struts>