Want to display file list using jsp

Question

I am new to netbeans with glassfish server.My html code looks like,

Answer 1

To process HTTP multipart/form-data requests in a servlet, use Apache Commons FileUpload. You should end up with the uploaded file in a FileItem. It has a write() method.

String filename = FilenameUtils.getName(fileItem.getName()); 
fileItem.write(new File("c:/upload", filename)); // Name must be unique!

For the usage guide and more code examples, just check their User Guide.

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To display a list of files in the folder, you need to use the java.io.File API, it has a listFiles() method which returns a list of all files (paths) in a certain path. Do it in a preprocessing servlet which forwards the request to a JSP to display the list.

File[] files = new File("c:/upload").listFiles();
request.setAttribute("files", files);
request.getRequestDispatcher("/WEB-INF/uploads.jsp").forward(request, response);

In the /WEB-INF/uploads.jsp file use JSTL to iterate over the File[].

     (${file.length / 1024}KB)

Note that this is of course open for more (UI) finetuning, but that's up to you. I assume that you already know the HTML/JSP/Servlet basics.