How to upload file using Servlet of Java in NetBeansIDE

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How to upload file using Servlet of Java in NetBeansIDE


How to upload file using Servlet of Java in NetBeansIDE

1. Open NetBeansIDE.

2. Make a new Java web project.

3. Make a form in index.jsp (method='POST', enctype='multipart/form-data').

4. Make a servlet(FileUploadServlet) in source package folder and add it to deployment
   descriptor(web.xml).

5. Copy this process request method code in your servlet.

protected void processRequest(HttpServletRequest request,
        HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");

    final String path = request.getParameter("destination");
    final Part filePart = request.getPart("file");
    final String fileName = getFileName(filePart);

    OutputStream out = null;
    InputStream filecontent = null;
    final PrintWriter writer = response.getWriter();

    try {
        out = new FileOutputStream(new File(path + File.separator + fileName));
        filecontent = filePart.getInputStream();

        int read = 0;
        final byte[] bytes = new byte[1024];

        while ((read = filecontent.read(bytes)) != -1) {
            out.write(bytes, 0, read);
        }
        writer.println(fileName + " created at " + path);

    } catch (FileNotFoundException fne) {
        writer.println("Error in file upload  ERROR:" + fne.getMessage());

    } finally {
        if (out != null) {
            out.close();
        }
        if (filecontent != null) {
            filecontent.close();
        }
        if (writer != null) {
            writer.close();
        }
    }
}

private String getFileName(final Part part) {
    final String partHeader = part.getHeader("content-disposition");
    for (String content : part.getHeader("content-disposition").split(";")) {
        if (content.trim().startsWith("filename")) {
            return content.substring(
                    content.indexOf('=') + 1).trim().replace("\"", "");
        }
    }
    return null;
}

6. Add @MultipartConfig annotation on your servlet class.

7. Fix all imports as per this tutorial.

8. Run the Project.

9. Finish.

Thank You :)

Comments

  1. UnknownJune 24, 2014 at 2:09 AM

    Sir i performed the same steps as u performed but m facing an error which is something like this
    HTTP Status 404 - Not Found

    type Status report

    messageNot Found

    descriptionThe requested resource is not available.

    GlassFish Server Open Source Edition 4.0

    M seriously troubled by this ..plzz help

    ReplyDelete
    Replies
    1. raksrahulJune 27, 2014 at 10:23 PM

      http status as 4xx means error from client side.

      check if u are typing right url

      Delete

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