先看看效果圖：
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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 {@Overrideprotected StreamInfo getStreamInfo(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {//獲取資源文件的名稱String resname = request.getParameter("resname");//利用struts下載資源return new DownloadAction.ResourceStreamInfo("audio/x-mpeg", this.getServlet().getServletContext(), "/resource/music/" + resname);}@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response)throws Exception {//向瀏覽器發(fā)送消息頭，使文件以附件的方式打開，并找到資源名對應(yīng)的文件名稱發(fā)送給瀏覽器String resname = request.getParameter("resname");FileUtils fu = new FileUtils(this.getServlet().getServletContext());Map<String,String> musmap = fu.getMusmap();String name = musmap.get(resname);//同時對文件名進(jìn)行編碼。在FireFox下還是有亂碼，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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