ajaxForm插件的ajaxSubmit缓存问题

症状：第一次提交可以，以后均告失败；尝试一：每次提交变更form的action地址，结果仍然失败；尝试二：使用ajaxForm的option设置，成功，具体代码如下：var formUrl ="${webPath }/edit.action?random=" +new Date().getTime();var options = {url : formUrl,type : "post",dataType:"json",success: function (resultObj, status) {if(resultObj.ret == 0){alert('succ');window.location.href = '${webPath}/list.action';}else{alert(resultObj.desc);}},error: function (data, status, e) {alert('修改失败');}}$("#editForm").ajaxSubmit(options);