我有一个文件在我看来
<form id="upload" enctype="multipart/form-data"> <input type="file" name="fileUpload" id="fileUpload" size="23" /><br /> </form>
和ajax请求
$.ajax({
url: '<%=Url.Action("JsonSave","Survey") %>',dataType: 'json',processData: false,contentType: "multipart/mixed",data: {
Id: selectedRow.Id,Value: 'some date was added by the user here :))'
},cache: false,success: function (data) {}
});
但是在Request.Files中没有文件。 ajax请求有什么问题？
解决方法
Upload files using AJAX in ASP.Net MVC
自HTML5以来，事情发生了变化
JavaScript
document.getElementById('uploader').onsubmit = function () {
var formdata = new FormData(); //FormData object
var fileInput = document.getElementById('fileInput');
//Iterating through each files selected in fileInput
for (i = 0; i < fileInput.files.length; i++) {
//Appending each file to FormData object
formdata.append(fileInput.files[i].name,fileInput.files[i]);
}
//Creating an XMLHttpRequest and sending
var xhr = new XMLHttpRequest();
xhr.open('POST','/Home/Upload');
xhr.send(formdata);
xhr.onreadystatechange = function () {
if (xhr.readyState == 4 && xhr.status == 200) {
alert(xhr.responseText);
}
}
return false;
}
控制器
public JsonResult Upload()
{
for (int i = 0; i < Request.Files.Count; i++)
{
HttpPostedFileBase file = Request.Files[i]; //Uploaded file
//Use the following properties to get file's name,size and MIMEType
int fileSize = file.ContentLength;
string fileName = file.FileName;
string mimeType = file.ContentType;
System.IO.Stream fileContent = file.InputStream;
//To save file,use SaveAs method
file.SaveAs(Server.MapPath("~/")+ fileName ); //File will be saved in application root
}
return Json("Uploaded " + Request.Files.Count + " files");
}
编辑：HTML
<form id="uploader">
<input id="fileInput" type="file" multiple>
<input type="submit" value="Upload file" />
</form>
