TestController.java

package org.springframework.issues;

import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

    @RequestMapping(name= "/testjson", method = RequestMethod.POST)
    @ResponseStatus(HttpStatus.CREATED)
    public Book handle(@RequestBody(required = false) Book body) {
        return new Book("Hello", "World");
    }

    public class Book {
        private String title;
        private String author;

        public Book(String title, String author) {
            this.title = title;
            this.author = author;
        }

        public String getTitle() {
            return title;
        }

        public String getAuthor() {
            return author;
        }
    }
}