//属性要与带转化的对象属性对应

var param={name:'语文',price:16};

$.ajax({

    url: "/book/adddata",

    type: "POST",

    dataType: 'json',

    //必需设定，后台@RequestBody会根据它做数据反序列化

    contentType:"application/json",

    //必需把JSON数据以字符串的格式提交

    data:JSON.stringify(param),

    success: function (data) {

       alert('添加成功');

    },

    error: function (XMLHttpRequest, textStatus) {

        alert('添加失败');

    }

});

    @RequestMapping(value="adddata")

    @ResponseBody

    public  Protocol addData(Model model, @RequestBody Book book) {

        Book reData = bookService.add(book);

        return reData;

    }