JAVA 向浏览器输出文件

public static void download(HttpServletRequest request, HttpServletResponse response, InputStream inputStream, String fileName){
        BufferedOutputStream bos = null;
        try {
            // 定义输出缓冲 10k
            byte[] buffer = new byte[10240];
            String userAgent = request.getHeader("user-agent").toLowerCase();
            if (userAgent.contains("msie") || userAgent.contains("like gecko")) {
                fileName = URLEncoder.encode(fileName, "UTF-8");
            } else {
                fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");
            }

            response.setCharacterEncoding("utf-8");
            response.setContentType("application/msword");
            response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
            bos = new BufferedOutputStream(response.getOutputStream());
            int bytesRead = 0;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                bos.write(buffer, 0, bytesRead);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (bos != null) {
                try {
                    bos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }