Simply put, you can take a Source as an enter, specify a POJO as a method argument, and annotate it with @RequestBody. You may as well annotate the tactic by itself with @ResponseBody to specify that its final result needs to be remodeled on to an HTTP reaction: Not The http://springboottutorials29505.bloguetechno.com/5-Simple-Techniques-For-spring-mvc-19420418