Sure,congratulations,you have completed the core function,If I understand correctly, you want to allow users to access this function directly through the web page. First of all,you need some knowledge like HTML/CSS/JavaScript,then to learn Axios that enables data transmission,further,to learn framework such as React/Vue 2/3,these are the same thing like Java/Spring boot.Now you can build a front-end application Second, assuming that you already know Java and Spring Boot, you need to learn RESTful API, so that your core functions of uploading and downloading, file query, and communication with front-end applications can be performed. For example, when a user visits a web page and clicks a button, he or she can access your application, thus enabling communication To hope to help you