Ajax提交Form表单及文件上传的实例代码

<form id = "form_insert" method = "post">
<table style = "font-size: 13px; margin: 13px auto;"> 
<tr>
<td style = "text-align: right;">类型</td>
<td>:&nbsp;&nbsp;<input id = "acttype" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">名称</td>
<td>:&nbsp;&nbsp;<input id = "actname" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">开始时间</td>
<td>:&nbsp;&nbsp;<input id = "actstarttime" style = "width:150px" class = "easyui-datetimebox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">结束时间</td>
<td>:&nbsp;&nbsp;<input id = "actendtime" style = "width:150px" class = "easyui-datetimebox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">省</td>
<td>:&nbsp;&nbsp;<input id ="mem_Province" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td>
</tr>
<tr><td colspan="2" style="height: 13px"></td>
</tr>
<tr>
<td style="text-align: right;">市</td>
<td>:&nbsp;&nbsp;<input id = "mem_City" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">门店</td>
<td>:&nbsp;&nbsp;<input id = "mem_Shop" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td>
</tr>
<tr><td colspan="2" style="height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">具体地址</td>
<td>:&nbsp;&nbsp;<input id = "actadd" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td>
</tr>
</table>
</form>
<form id = "form_sub" style = "font-size: 13px;">
<table style="font-size: 13px; margin: 13px auto;">
<tr>
<td style = "text-align: right;">上传图片</td>
<td>:&nbsp;&nbsp;<input class = "easyui-filebox" name = 'photo' style = "width:153px" data-options = "required:true,prompt:'选择上传图片',buttonText:'&nbsp;选&nbsp;择&nbsp;'"></td>
<td><input type = 'text' id = "Item" name = 'item' style = "display:none;"></td>
</tr>
</table>
</form>
<div style = "text-align:right; padding:2px 5px;">
<a id = "sub" class = "easyui-linkbutton" data-options = "iconCls:'icon-ok'" href = "javascript:void(0)">
保存
</a>&nbsp;&nbsp;&nbsp;&nbsp;
<a class = "easyui-linkbutton" data-options = "iconCls:'icon-quxiao'" href = "javascript:void(0)" onclick = "window_open($('#insert_form'), 'close')">
取消
</a>&nbsp;&nbsp;&nbsp;&nbsp;
</div>

$( '#sub' ).click( function () {
　　var actTimeStart1 = $ ('#actstarttime') . datebox ('getValue');
　　var actTimeStart = changeDateToLong(actTimeStart1);
　　var actTimeEnd1 = $('#actendtime').datebox('getValue');
　　var actTimeEnd = changeDateToLong(actTimeEnd1);
　　if(actTimeStart != '' && actTimeEnd != '' && (actTimeStart - actTimeEnd > 0)){
　　　　$.messager.alert('警告','结束时间不能小于开始时间！','error');
　　　　return false;
　　}
　　else{
　　　　if ($('#form_insert').form('validate')) {
　　　　　　var actType = document.getElementById("acttype").value;
　　　　　　var actName = document.getElementById("actname").value;
　　　　　　var actArea = document.getElementById("actadd").value;
　　　　　　var actTimeStart1 = $('#actstarttime').datebox('getValue');
　　　　　　var actTimeStart = changeDateToLong(actTimeStart1);
　　　　　　var actTimeEnd1 = $('#actendtime').datebox('getValue');
　　　　　　var actTimeEnd = changeDateToLong(actTimeEnd1);
　　　　　　var t2 = $('#mem_Shop').combobox('getValue');
　　　　　　var jsonObj = {actType:actType,actName:actName,actTimeStart:actTimeStart,actTimeEnd:actTimeEnd,actArea:actArea,t2:t2};
　　　　　　var activityMemberJson = JSON.stringify(jsonObj);
　　　　　　document.getElementById("Item").value=activityMemberJson;
　　　　　　var form = new FormData(document.getElementById("form_sub"));
　　　　　　$.ajax({
　　　　　　　　url : ../activity/actionActivityInsert', //http://www.cnblogs.com/jayxxxxxxx/
　　　　　　　　type : "post",
　　　　　　　　data : form, //第二个Form表单的内容
　　　　　　　　processData : false,
　　　　　　　　contentType : false,
　　　　　　　　error : function(request) {
　　　　　　　　},
　　　　　　　　success : function(data) {
　　　　　　　　　　$('#box').datagrid('reload');
　　　　　　　　}
　　　　　　});
　　　　　　window_open($('#insert_form'), 'close');
　　　　}else {
　　　　　　$.messager.alert('警告' , '信息不完整!' , 'error');
　　　　}
　　}
});