js 手动设置表单值再提交

html：

<form id="form1" method="post" th:action="@{/plan/startWorkOrderBatch}">（th:action 为thymeleaf的标签）

<input id="workOrderIds" type="hidden" name="workOrderIds"/> 

</form>

js:

document.getElementById("workOrderIds").value=expectedStr;

$("#form1").submit();