jQuery改变form表单的action，并进行提交

<s:form action="/student/traScore.action?method=list" id="queryForm" name="queryForm">
</s:form>

//导出学生实训成绩
function exportScore(){
var path = "${ctx}/student/traScore.action?method=exportExcel";
$('#queryForm').attr("action", path).submit();;
}