在jsp中下载任何文件格式的内容类型应该是什么？

最后，我以某种方式设法做到了……问题出在JSP的“ Out.write”上，它无法写入字节流……

我用servlet替换了jsp文件…

该代码段是：

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    try {        String filename = (String) request.getAttribute("fileName");        response.setContentType("application/octet-stream");        response.setHeader("Content-Disposition",     "attachment;filename="+filename);        File file = new File(filename);        FileInputStream fileIn = new FileInputStream(file);        ServletOutputStream out = response.getOutputStream();        byte[] outputByte = new byte[(int)file.length()];        //copy binary contect to output stream        while(fileIn.read(outputByte, 0, (int)file.length()) != -1)        {        out.write(outputByte, 0, (int)file.length());        }     }

现在，我可以下载所有类型的文件了。

感谢您的回应:)