Method test

ch4/SimpleRestController.java:14–22

(@RequestBody Person p)

    }

    @PostMapping("/send")
    @ResponseBody
    public Person test(@RequestBody Person p) {
        System.out.println("p = " + p);
        p.setName("ABC");
        p.setAge(p.getAge() + 10);

        return p;
    }
}