Get file extension from uploaded file

Question

Here my requirement is to upload the file and to store it in the disk. I have no problem in storing it in disk, but getting the extension of the file. The problem is when I clic

Answer 1

To get the extension of a file from servlet upload, your form enctype should be "multipart/form-data" Example upload form:

    

                Upload your file

                
                Submit
                

            

On the server-side, the parameter name of the file will correspond to the "name" attribute of the input.

        //...other request handling code 
    Part filePart = request.getPart("file");/*"name" attribute of your input*/
        String fileName = filePart.getSubmittedFileName();//full name of file submitted
        String[] fileNameSplit = fileName.split(".");//split between name and extension
        String extension = fileNameSplit[fileNameSplit.length-1];//get the extension part of the file name