servlet 文件下载

 

 

}String name = request.getParameter("fileName");name = new String(name.getBytes("ISO-8859-1"), "UTF-8");// web绝对路径// String path =// request.getSession().getServletContext().getRealPath("/");String savePath = "e://webapps//nameStandard//upload";// 设置为下载application/x-downloadresponse.setContentType("application/x-download");// 即将下载的文件在服务器上的绝对路径String filenamedownload = savePath + "//" + name;// 下载文件时显示的文件保存名称String filenamedisplay = name;// 中文编码转换filenamedisplay = URLEncoder.encode(filenamedisplay, "utf-8");response.addHeader("Content-Disposition", "attachment;filename=" + filenamedisplay);OutputStream os = null;FileInputStream fis = null;try {os = response.getOutputStream();fis = new java.io.FileInputStream(filenamedownload);byte[] b = new byte[1024];int i = 0;while ((i = fis.read(b)) > 0) {os.write(b, 0, i);}} catch (Exception e) {} finally {if (fis != null)fis.close();if (os != null) {os.flush();os.close();}}