public static void down(HttpServletRequest request,
???HttpServletResponse response) throws Exception {
??
??
??String name="aaa.*";//文件名
??String uploadPath = UploadFileHelper.getRepositoryPath()+"//";//文件來源
????
???String filePath = name;
??String fileName = name;
??
??
??if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0){
???fileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");//firefox瀏覽器
??}else {
?????? if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0){
????? ? fileName = URLEncoder.encode(fileName, "UTF-8");//IE瀏覽器
?????? }
??}??
??response.setContentType("text/plain");
??response.setHeader("Location",fileName);
??response.reset();
??response.setHeader("Cache-Control", "max-age=0" );
??response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
?BufferedInputStream bis = null;
??BufferedOutputStream bos = null;
??OutputStream fos = null;
??InputStream fis = null;
??filePath = uploadPath + filePath;
??fis = new FileInputStream(filePath);
???? bis = new BufferedInputStream(fis);
???? fos = response.getOutputStream();
???? bos = new BufferedOutputStream(fos);

int bytesRead = 0;
???? byte[] buffer = new byte[5 * 1024];
???? while ((bytesRead = bis.read(buffer)) != -1) {
???????? bos.write(buffer, 0, bytesRead);// 將文件發送到客戶端
???? }
???? bos.close();
???? bis.close();
???? fos.close();
???? fis.close();
????
?}

轉載于:https://www.cnblogs.com/sand-tiny/p/4284450.html

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