网页下载文件的代码,尽量简单请问怎么写,我的代码不行,大家看看,怎么改谢谢
程序代码:
<%@ page contentType="text/html;charset=UTF-8" %> <%@ page import = "*" %> <% //防止IE缓存 response.setHeader("pragma","no-cache"); response.setHeader("cache-control","no-cache"); response.setDateHeader("Expires",0); //设置编码 //request.setCharacterEncoding("UTF-8"); String fileName = new String(request.getParameter("fileName").getBytes("ISO-8859-1"),"UTF-8"); //取到文件 File file = new File(application.getRealPath("/")+"upload/" + fileName); response.reset(); //response.setContentType("application/octet-stream;charset=UTF-8"); response.setContentType("application/octet-stream;charset=UTF-8");//解决在弹出文件下载框不能打开文件的问题 //System.out.println(response.getCharacterEncoding()); //一定要对fileName进行encode //response.addHeader("Content-Disposition", "attachment; filename=" + (fileName, "UTF-8")); response.addHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes("GBK"),"ISO8859-1"));//解决在弹出文件下载框不能打开文件的问题 response.setContentLength((int) file.length()); byte[] buffer = new byte[4096]; BufferedOutputStream output = null; BufferedInputStream input = null; //写缓冲区 try { output = new BufferedOutputStream(response.getOutputStream()); out.clear(); out = pageContext.pushBody(); input = new BufferedInputStream(new FileInputStream(file)); int n = (-1); while ((n = input.read(buffer, 0, 4096)) > -1) { output.write(buffer, 0, n); } response.flushBuffer(); } catch (Exception e) { } finally { if (input != null) input.close(); if (output != null) output.close(); } %>
[ 本帖最后由 sunpei 于 2011-12-9 13:03 编辑 ]