How to upload file using Servlet of Java in NetBeansIDE -- part 1
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 :)
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