Spring Security Explained

Spring Boot applications often need to provide some REST APIs to allow front-end applications to download images. One is that when open the image URL is opened with a browser, the image will be downloaded into a file. The other is that the browser will directly display the image.

When developing back-end programs, we often need to implement REST APIs so that the front-end can download files. It is easy to implement file downloading REST APIs with Spring Boot StreamingResponseBody.