JSON.stringify 在OA差旅中转换为字符串传给后端，（使用from表单的形式）

$('#bookForm').find('#formData').val(transInfo.fromData).end().submit();

这里的val()中的transInfo.fromData应该是字符串格式：

                                   transInfo.fromDataSec = {
                                        'arrCityCN': $('.oa-wrapper .selected .i-dest').attr('data-city'),
                                        'depCityCN': $('.oa-wrapper .selected .i-src').attr('data-city'),
                                        "goFlightInfo": JSON.stringify(transInfo.parentsInfo),
                                        "goFlightClassInfo": JSON.stringify(transInfo.childInfo),
                                        "goReasons": JSON.stringify(transInfo.checkInfo)
                                    };
                                    //transInfo.fromDataTwo = JSON.stringify(transInfo.fromDataSec);
                                    transInfo.fromDataTwo = transInfo.fromDataSec;
                                    var dataFlightSec = {
                                        'travelNO': $('.oa-wrapper .selected').attr('data-no'),
                                        'appId': APP_SHEET.appId,
                                        'depCityCN': $('.oa-wrapper .selected .i-src').attr('data-city'),
                                        'depDate': $('.oa-wrapper .selected .i-n').attr('data-date'),
                                        'arrCityCN': $('.oa-wrapper .selected .i-dest').attr('data-city'),
                                        'queryModule': 1,
                                        'showAll': $('.show-more').attr('data-flag'),
                                        "fromData": transInfo.fromDataTwo
                                    }

                                    var urlLInk = URL.accountPage + "?appId=" + APP_SHEET.appId + "&travelNO=" + APP_SHEET.travelNO
                                    var formTpl = '' + '<form name="bookForm" id="bookForm" action="' + urlLInk + '" method="post" >' + '<input type="hidden" id="formData" name="formData"></input>' + '</form>';
                                    $('body').append(formTpl);
                                    $('#bookForm').find('#formData').val(JSON.stringify(dataFlightSec.fromData)).end().submit();

val()传输的数据是字符串，所以使用JSON.stringify将对象dataFlightSec.fromData转换成字符串，而dataFlightSec.fromData=transInfo.fromDataTwo= transInfo.fromDataSec是对象。