SpringMVC-表单的序列化

<form id="myForm">
    用户名：<input type="text" name="username"/>
    <br/>
    年龄：<input type="text" name="age"/>
    <br/>
    爱好：
    <input type="checkbox" name="hobby" value="篮球"/> 篮球
    <input type="checkbox" name="hobby" value="乒乓球"> 乒乓球
    <input type="checkbox" name="hobby" value="足球"> 足球
</form>
<input type="button" id="formBtn" value="发送">

<script>
    (function ($) {
        $.fn.serializeJson = function () {
            let serializeObj = {};

            let array = this.serializeArray();
            let str = this.serialize();

            $(array).each(function () {
                if (serializeObj[this.name]) {
                    if ($.isArray(serializeObj[this.name])) {
                        serializeObj[this.name].push(this.value);
                    } else {
                        serializeObj[this.name] = [serializeObj[this.name], this.value];
                    }
                } else {
                    serializeObj[this.name] = this.value;
                }
            });
            return serializeObj;
        };
    })(jQuery);
</script>