How to return a set of objects with Spring Boot?

Question

I did a lesson about Spring Boot and it works perfectly. But what if I want to return a set of objects ? I tried doing this but it doesn\'t work. How can I do i

Answer 1

Here is the code snippet I did for this. Remove the "consume" from your @RequestMapping annotation because you are not using that in your method.

@RestController
public class GreetingsController
{
    @RequestMapping(value = "greetings", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody
    List greeting() {
        Greeting greeting1 = new Greeting(1, "One");
        Greeting greeting2 = new Greeting(2, "Two");
        List list = new ArrayList<>();
        list.add(greeting1);
        list.add(greeting2);
        return list;
    }

    public class Greeting
    {
        private String message;
        private int count;

        public Greeting(int count, String message)
        {
            this.count = count;
            this.message = message;
        }

        public String getMessage()
        {
            return message;
        }

        public void setMessage(String message)
        {
            this.message = message;
        }
    }
}