我想用MVC和jQuery做一个文件上传,但是我的paremter是null。在我的jQuery中,我获取表单数据并为其分配变量,然后将其POST到ActionResult。我的参数为null,我不确定我是否正确传递数据。
HTML
<table>
<tr>
<td><img src="@Url.Content("~/AMTImages/UserAvatar.png")" width="64" height="64" style="border: thin solid" /></td>
<td></td>
<td></td>
<td>
<form enctype="multipart/form-data" id="imageUploadForm">
<table>
<tr>
<td>@Html.LabelFor(m => m.DisplayName, "Display Name: ")</td>
<td style="padding-left: 10px;">@Html.TextBoxFor(m => m.DisplayName)</td>
</tr>
<tr>
<td>@Html.LabelFor(m => m.UserImage, "User Image: ")</td>
<td style="padding-left: 10px; float: right;">@Html.TextBoxFor(m => m.UserImage, new { type = "file", accept = "image/*" })</td>
</tr>
</table>
</form>
</td>
<td>
<table style="display:none;">
<tr>
<td>
<progress></progress>
</td>
</tr>
</table>
</td>
</tr>
</table>
的JavaScript
$(':file').change(function () {
var file = this.files[0];
$.ajax({
url: '@Url.Action("UploadImage", "User")', //Server script to process data
type: 'POST',
data: file,
beforeSend: function() {
},
success: function () {
},
error: function () {
},
processData: false,
contentType: file.type
});
});
的ActionResult
public ActionResult UploadImage(HttpPostedFileBase file)
{
if (file != null && file.ContentLength > 0)
try
{
string path = Path.Combine(Server.MapPath("~/Images"),
Path.GetFileName(file.FileName));
file.SaveAs(path);
ViewBag.Message = "File uploaded successfully";
}
catch (Exception ex)
{
ViewBag.Message = "ERROR:" + ex.Message.ToString();
}
else
{
ViewBag.Message = "You have not specified a file.";
}
return View();
}
答案 0 :(得分:0)
您的UploadImage需要一个文件POST参数。你在哪里指定前端代码?看不到你传递的地方。
尝试将HttpPostedFileBase文件更改为HttpPostedFileBase userImage