Java下载文件方法

 public static void download(String path, HttpServletResponse response) {
         try {
             // path是指欲下载的文件的路径。
             File file = new File(path);
             // 取得文件名。
             String filename = file.getName();
             // 以流的形式下载文件。
             InputStream fis = new BufferedInputStream(new FileInputStream(path));
             byte[] buffer = new byte[fis.available()];
             fis.read(buffer);
             fis.close();
             // 清空response
             response.reset();
             // 设置response的Header
             response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes()));
             response.addHeader("Content-Length", "" + file.length());
             OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
             response.setContentType("charset=UTF-8");
             toClient.write(buffer);
             toClient.flush();
             toClient.close();
         } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
     public Object downLoadImg(String path){

         return true;
     }