网上有各种各样的文件上传方法，有基于JS框架的、也有基于flash swf插件的。
这次分享一个比较简单而且实用能快速上手的文件上传方法，主要步骤：
1.引用Jquery包，我用的是jquery-1.11.3.min.js 版本
2.编写JS代码
3.HTML中增加type=file控件
代码如下：
HTML代码：
<form id="fileupload" method="post" enctype = "multipart/form-data">
<input type="file" id="fileid" name="fileid" accept="application/vnd.ms-excel">
<input type="button" id="confirmuploadid" value="上传" />
</form>
//JS实现
$('#confirmuploadid').on('click', function () {
uploadProduct();
});
function uploadProduct() {
var formid = $("#fileupload");
var fd = new FormData(formid[0]); //form表单的方式实例化一个formData
fd.append('file', $('#fileid')[0].files);
fd.append('userid', userid);
$.ajax({
url: 'File/Setting',
type: 'POST',
dataType: 'JSON',
data: fd,
async: false,
cache: false,
contentType: false,
processData: false,
beforeSend: function () {
$("#confirmuploadid").prop("disabled", true);
},
success: function (returndata) {
$("#confirmuploadid").prop("disabled", false);
alert(returndata.Message);
},
error: function (returndata) {
alert("上传失败,请检查数据正确性,如：有些数字输入项，是否输入了字符！");
}
});
}
//MVC实现
public class FileController : Controller
{
[HttpPost]
public ActionResult Setting()
{
string userid = ""; string username = "";
FunctionBackMessage functionBackMessage = new FunctionBackMessage();
functionBackMessage.IsSuccess = false;
functionBackMessage.Message="上传失败，稍后重试！";
if (!string.IsNullOrEmpty(username))
{
HttpFileCollectionBase files = Request.Files;
string _urlstr = Request.Url.AbsoluteUri;
FunctionBackMessage fc = new FunctionBackMessage();
fc.IsSuccess = true; fc.Message = "上传成功";
if (files.AllKeys.Length > )
{
for (int i = ; i < files.AllKeys.Length; i++)
{
var myFile = files[i];
double myFileLength = myFile.ContentLength / 1024.0 / 1024.0;
int InputMediaExcelLength = !string.IsNullOrEmpty(Global.GetAppString("InputMediaExcelLength")) ? int.Parse(Global.GetAppString("InputMediaExcelLength")) : ; if (myFileLength > InputMediaExcelLength)//超出指定大小
{
fc.IsSuccess = false; fc.Message = "为了保证数据处理效率，每次上传文件小于" + InputMediaExcelLength + "M,如超出请拆分记录分多次上传！";
}
else
{
// string projectId = context.Request["projectId"];
// string username = context.Request["username"];
if ((!Path.GetExtension(myFile.FileName).Contains("xls") && !Path.GetExtension(myFile.FileName).Contains("xlsx")))
{
functionBackMessage.IsSuccess = false; functionBackMessage.Message = "请上传Excel格式文件！";
return Json(functionBackMessage, "application/json");
}
//文件保存
string uploadPath = HttpContext.Current.Server.MapPath("/tempfile") + "\\";//服务器临时路径(不含文件名和后缀)
if (!Directory.Exists(uploadPath))
{
Directory.CreateDirectory(uploadPath);
}
string fileName = DateTime.Now.Ticks + "_" + myFile.FileName;
string fileFull = uploadPath + fileName;//文件路径,包含文件名和后缀 try
{ myFile.SaveAs(fileFull);//保存文件
}
catch (Exception ex)
{
com.log.Loger.Debug("uploadMediaSource 保存文件失败", ex);
} }
}
}
else
{
functionBackMessage.IsSuccess = false; functionBackMessage.Message = "没有获取到上传文件";
}
}
return Json(functionBackMessage, "application/json");
}
}