Springboot之PostMapping无法获取数据

在使用SpringBoot的PostMapping注解的时候，发现无法获取数据（get方法可行），经过一番查证，发现需要添加新的注解，举例如下：

    //接受单个参数，使用RequestParam，并且添加上name属性，保证前后端的参数名称一致

    @PostMapping(value = "/users")
    public RestfulResponse postUser(@RequestParam("id") Integer id,         @RequestParam("username") String username, @RequestParam("password") String password) {
        User user = new User(id, username, password);
        //User user = new User(1,"tom","123123");
        System.out.println(id + "----" + username);
            restfulResponse = new RestfulResponse(true,200,"查询成功", null);
        return restfulResponse;
    }
    //接受一个实体类，要使用RequestBody 注解
    @PostMapping(value = "/getuser")
    public RestfulResponse postUser1(@RequestBody User user) {
        restfulResponse = new RestfulResponse(true,200,"查询成功", user);
        return restfulResponse;
    }