BYR Achieve · 镜像论坛

Re: 文件打包下载error

2013/2/20镜像同步1 回复

public static void downloadAll(ChmMethod chmMethod,List<File> files){ HttpServletResponse response = ServletActionContext.getResponse(); HttpServletRequest request = ServletActionContext.getRequest(); System.out.println("downloadAll chmMethod:"+chmMethod); try { /**这个集合就是你想要打包的所有文件， * 这里假设已经准备好了所要打包的文件*/ double a = Math.random()*100; a = Math.ceil(a); int randomNum = new Double(a).intValue(); //下載的文件名是檢測方法名再加隨機數 String downfilename = chmMethod.getName().replaceAll("/","")+"_"+ randomNum+".rar"; File file = new File(downfilename); System.out.println("file:"+file); if (!file.exists()) { file.createNewFile(); } response.addHeader("Content-Disposition", "attachment; filename=" + new String(file.getName().getBytes("gb2312"), "iso-8859-1")); response.setContentType("application/octet-stream"); //创建文件输出流 response.reset(); System.out.println(file.getName()); FileOutputStream fous = new FileOutputStream(file); // OutputStream os = new BufferedOutputStream(fous); // CheckedOutputStream csum = new CheckedOutputStream(fous,new Adler32()); // OutputStream os = new BufferedOutputStream(new FileOutputStream("a.zip" )); ZipOutputStream zipOut = new ZipOutputStream(fous); // ZipOutputStream zipOut = new ZipOutputStream(os); /**这个方法接受的就是一个所要打包文件的集合， * 还有一个ZipOutputStream*/ zipOut.setEncoding("gbk"); DownLoad.zipFile(files, zipOut); zipOut.close(); // fous.close(); /**直到文件的打包已经成功了， * 文件的打包过程被我封装在FileUtil.zipFile这个静态方法中， * 稍后会呈现出来，接下来的就是往客户端写数据了*/ OutputStream out = response.getOutputStream(); // OutputStream out = getResponse().getOutputStream(); BufferedInputStream bin = new BufferedInputStream(new FileInputStream(file.getPath())); byte[] buf = new byte[1024]; int len = 0; while((len = bin.read(buf)) > 0) out.write(buf,0,len); out.close(); bin.close(); /**最后的操作是把创建的临时文件删除*/ try { File f = new File(file.getPath()); f.delete(); } catch (Exception e) { e.printStackTrace(); } } catch (Exception e) { e.printStackTrace(); } }

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