Question

我有一个下载所选文件的servelt。

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub

        try {
            File file = new File("C:\\Users\\00002997\\Desktop\\abc.html");
            FileInputStream fis = new FileInputStream(file);
            byte [] bytes = new byte[(int)file.length()];
            fis.read(bytes);
            fis.close();

            //Downlaod code starts

            ServletOutputStream sos = response.getOutputStream();
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition", "attachment;filename="+file.getName());

            sos.write(bytes);
            sos.flush();
            sos.close();
        } catch(Exception e){
            e.printStackTrace();
        }

    }

// JSP文件

<html>
<head>
<title>Insert title here</title>
</head>
<body>
<form action="FileDownloadServlet" method="get">

<input type="submit" value="Download" >

</form>
</body>
</html>

当我说html文件以外的下载时，它可以正常工作

enter image description here