poi4+导出文件名变下划线

返回流设置

response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("UTF-8"), "ISO-8859-1"));

/**
     * 下载word文档
     * 下载报告，根据fileType类型下载word还是pdf
     * @param request
     * @param response
     * @return
     * @throws IOException
     */
    @RequestMapping(value = "downLoadWord")
    @ResponseBody
    public void downLoadWord(HttpServletRequest request, HttpServletResponse response, SjyMydaibanReports sjyMydaibanReports) throws IOException {
        //根据projectId查询需要下载的文件地址address
        SjyMydaibanReports sjyMydaibanReports1 = iSjyMydaibanReportsService.queryByProjectId(sjyMydaibanReports);
        try {
            String path = sjyMydaibanReports1.getFileAddress();
            // 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();
            // 取得文件的后缀名。
            String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();

            // 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("UTF-8"), "ISO-8859-1"));
            response.addHeader("Content-Length", "" + file.length());
            OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
            response.setContentType("application/octet-stream");
            toClient.write(buffer);
            toClient.flush();
            toClient.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }

    }