先看看效果图：

package com.fenghuo.struts.download; import java.net.URLEncoder; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.actions.DownloadAction; import com.fenghuo.music.util.FileUtils; public class DownLoad extends DownloadAction { @Override protected StreamInfo getStreamInfo(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //获取资源文件的名称 String resname = request.getParameter("resname"); //利用struts下载资源 return new DownloadAction.ResourceStreamInfo("audio/x-mpeg", this .getServlet().getServletContext(), "/resource/music/" + resname); } @Override public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //向浏览器发送消息头，使文件以附件的方式打开，并找到资源名对应的文件名称发送给浏览器 String resname = request.getParameter("resname"); FileUtils fu = new FileUtils(this.getServlet().getServletContext()); Map<String,String> musmap = fu.getMusmap(); String name = musmap.get(resname); //同时对文件名进行编码。在FireFox下还是有乱码，不明白原因，望指教。 response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode(name, "UTF-8")); return super.execute(mapping, form, request, response); } }

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