/// <summary>
/// 保存上传的文件
/// </summary>
/// <param name="postFileBase"></param>
/// <param name="path"></param>
/// <returns></returns>
private File SaveHttpPostFile(HttpPostedFileBase postFileBase,string path)
{
System.IO.Stream uploadStream = null;
System.IO.FileStream fs = null;
File file = new File();
try
{
uploadStream = postFileBase.InputStream;
int bufferLen = 1024;
byte[] buffer = new byte[bufferLen];
int contentLen = 0;
file.Name = System.IO.Path.GetFileName(postFileBase.FileName);
file.ContentType = postFileBase.ContentType;
file.RealPath = path + Guid.NewGuid().ToString();
fs = new System.IO.FileStream(file.RealPath, System.IO.FileMode.Create, System.IO.FileAccess.ReadWrite);
while ((contentLen = uploadStream.Read(buffer, 0, bufferLen)) != 0)
{
fs.Write(buffer, 0, bufferLen);
fs.Flush();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (null != fs)
{
fs.Close();
}
if (null != uploadStream)
{
uploadStream.Close();
}
}
file.Size = GetFileSize(file.RealPath);
file.Md5 = Md5Util.GetMD5HashFromFile(file.RealPath);
return file;
}
public ActionResult Upload()
{
IList<File> retVal = new List<File>();
Url = Server.MapPath("/") + @"Files\";
System.IO.Stream uploadStream = null;
System.IO.FileStream fs = null;
//文件上传，一次上传1M的数据，防止出现大文件无法上传
HttpFileCollectionBase files = Request.Files;
for (int i = 0; i < files.Count;i++ )
{
File file = new File();
try
{
HttpPostedFileBase postFileBase = files[i];
uploadStream = postFileBase.InputStream;
int bufferLen = 1024;
byte[] buffer = new byte[bufferLen];
int contentLen = 0;
file.Name = System.IO.Path.GetFileName(postFileBase.FileName);
file.ContentType = postFileBase.ContentType;
file.RealPath = Url + Guid.NewGuid().ToString();
fs = new System.IO.FileStream(file.RealPath, System.IO.FileMode.Create, System.IO.FileAccess.ReadWrite);
while ((contentLen = uploadStream.Read(buffer, 0, bufferLen)) != 0)
{
fs.Write(buffer, 0, bufferLen);
fs.Flush();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (null != fs)
{
fs.Close();
}
if (null != uploadStream)
{
uploadStream.Close();
}
}
file.Size = GetFileSize(file.RealPath);
file.Md5 = Md5Util.GetMD5HashFromFile(file.RealPath);
//查找是否存在过相同MD5值的文件，如果是则不保存到数据库
IList<File> searchFiles=fileOper.Get(
delegate(object sender, ICriteria criteria)
{
criteria.Add(Restrictions.Eq("Md5", file.Md5));
}
);
if (searchFiles.Count > 0)
{
//删除上传的文件并把数据库相同文件信息返回
DelFile(file.RealPath);
file = searchFiles[0];
}
else
{
//保存文件到数据库
fileOper.Add(file);
}
retVal.Add(file);
}
return Json(retVal);
}
public ActionResult Del(File file)
{
return Json(fileOper.Del(file));
}
public ActionResult Update(File file)
{
return Json(fileOper.Update(file));
}
//public void DownLoad(string id)
//{
// File file=fileOper.Get(new Guid(id));
// if (file != null)
// {
// Response.ClearHeaders();
// Response.Clear();
// Response.Expires = 0;
// Response.Buffer = true;
// Response.AddHeader("Accept-Language", "zh-tw");
// System.IO.FileStream files = new System.IO.FileStream(file.RealPath, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read);
// byte[] byteFile = null;
// if (files.Length == 0)
// {
// byteFile = new byte[1];
// }
// else
// {
// byteFile = new byte[files.Length];
// }
// files.Read(byteFile, 0, (int)byteFile.Length);
// files.Close();
// Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));
// Response.ContentType = "application/octet-stream;charset=utf-8";
// Response.BinaryWrite(byteFile);
// Response.End();
// }
//}
public ActionResult Add(File file)
{
return Json(fileOper.Add(file));
}