Uploading Files to the server using Servlet and JSP is a common task in Java web applications. Before coding your Servlet or JSP to handle file upload requests, you need to know a little bit about File upload support in HTML and HTTP protocol. If you want your user to choose files from the file system and upload them to the server then you need to use <input type="file"/>. This will enable us to choose any file from the file system and upload to a server.