如何获取后端传递变量值，指定radio单选框的默认值

<form action="" onsubmit="return false" id="xgtiao" th:object="${xiangx}">




 <td style="border:1px solid red" >
                            <input type="radio" name="jigui"  value="1"
                                   style="margin-left: 15px;pxmargin-right: 10px;margin-top: 13px"> <span>是</span>
                            <input type="radio" name="jigui" value="2"
                                   style="margin-left: 15px;margin-right: 10px"><span style="margin-right: 30px">否</span>
                    </td>

<input type="radio" :checked="Boolean变量">

                $.ajax({
                    ...
                    success: function(data) {
                        if (data.jigui == 1) {
                            $("input[name=jigui]")[0].checked = true;
                        }
                        else if (data.jigui == 2) {
                            $("input[name=jigui]")[1].checked = true;
                        }
                        form.render();
                    }
                })