public ActionResult IsMD5Exist(string fileMd5, string fileName, string fileID)
{
FileModel model = new FileModel();
FileUpload.Models.FileInfo file = new FileUpload.Models.FileInfo();
file = (from c in model.FileInfoSet
where c.FileMD5 == fileMd5
select c).FirstOrDefault();
if (file == null)
{
return(Json("this file is not exist"));
}
return(Json("this file is exist"));
}
public ActionResult IsMD5Exist(string fileMd5, string fileName, string fileID)
{
FileModel model = new FileModel();
FileUpload.Models.FileInfo file = new FileUpload.Models.FileInfo();
file = (from c in model.FileInfoSet
where c.FileMD5 == fileMd5
select c).FirstOrDefault();
//if (file == null)
//{
// return HttpNotFound();//代表服务器上没有这个文件
//}
//return Json(new//存在MD5相同的文件
//{
// Eixst = true
//});
if (file == null)
{
return(Json("this file is not exist"));
}
return(Json("this file is exist"));
}
// GET: FileUpload
//解决文件上传最大4M的显示可在web.config中设置，当前设置，最大上传大小2GB，最大上传时间一小时
public ActionResult BigFileUp(string guid, string md5value, string chunks, string chunk, string id, string name, string type, string lastModifiedDate, int size, HttpPostedFileBase file)
{
//全程没有做文件后缀或者类型验证，需要的应该在开始就做验证
//object lockObj = null;
if (Request.Files.Count == 0)
{
return(Json(new { error = true }));
}
string ex = Path.GetExtension(file.FileName);
string fileFullName = String.Empty;
string localPath = String.Empty;
try
{
localPath = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
string thisDir = System.IO.Directory.GetCurrentDirectory();
int cutIndex = thisDir.LastIndexOf("FileUpload.Tests");
localPath = thisDir.Substring(0, cutIndex) + "FileUpload\\Upload";
}
//取得分块和信号信息
int fenkuai = 0;
int xuhao = 0;
if (chunks != null && chunk != null)
{
fenkuai = Convert.ToInt32(chunks);
xuhao = Convert.ToInt32(chunk);
}
else
{
//文件没有分块直接保存
fileFullName = Guid.NewGuid().ToString("N") + ex;
//file.SaveAs(Path.Combine(HttpRuntime.AppDomainAppPath + "\\Upload", fileFullName));
if (!SaveFile(localPath, fileFullName, file))
{
return(Json(new { error = true }));
}
else
{
}
#region 保存文件md5到数据库
FileModel model = new FileModel();
FileUpload.Models.FileInfo upfile = new FileUpload.Models.FileInfo();
upfile.FileMD5 = md5value;
upfile.FileName = fileFullName;
model.FileInfoSet.Add(upfile);
int result = 0;
try
{
result = model.SaveChanges();
if (result != 1)
{
return(Json(new { error = true }));
}
}
catch (Exception)
{
return(Json(new { error = true }));
}
#endregion
return(Json(new
{
jsonrpc = "2.0",
id = id,
filePath = "/Upload/" + fileFullName
}));
}
string tempPath = "Upload";
if (guid != null)
{
tempPath = tempPath + "\\" + guid.ToString();
}
//string localPath = Path.Combine(HttpRuntime.AppDomainAppPath, tempPath);//保存的路径
tempPath = Path.Combine(HttpRuntime.AppDomainAppPath, tempPath);//保存的路径
//没有做文件类型验证
//fileFullName = Guid.NewGuid().ToString("N") + ex;
fileFullName = "temp" + xuhao.ToString() + ex;
//应该先把分块的文件存到以guid命名的临时文件夹下，待文件夹下的文件数目达到分块数目后拼接成一个文件，并删除临时文件
if (!SaveFile(tempPath, fileFullName, file))
{
return(Json(new { error = true }));
}
else
{
//分块文件保存成功后要判断是否合并文件
}
int chunksNumber = Convert.ToInt32(chunks);
//finally
if (xuhao == chunksNumber - 1)//最后一个分块负责上传的进程留下来合并文件
{
//待文件夹下的文件数目达到分块数目后拼接成一个文件，并删除临时文件
//fileFullName文件夹
DirectoryInfo TempFolder = new DirectoryInfo(tempPath);
string path = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload"); //保存的路径
//string path = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload\\"+guid);//测试：保存的路径
string filefullname = Guid.NewGuid().ToString() + ex;
//下面应该用using块实现
FileStream fa = new FileStream(path + "\\" + filefullname, FileMode.Append, FileAccess.Write);
for (int i = 0; i < chunksNumber; i++)
{
byte[] buffer = new byte[11 * 1024 * 1024];
//FileStream fileTemp = new FileStream(tempPath + "\\temp"+i+ex, FileMode.Open, FileAccess.Read,FileShare.ReadWrite);
//解决了文件占用问题
int tryTimes = 0;
FileStream fileTemp = null;
while (fileTemp == null)
{
try
{
fileTemp = new FileStream(tempPath + "\\temp" + i + ex, FileMode.Open, FileAccess.Read);
tryTimes++;
if (tryTimes > 10) //次数大于10就结束等待
{
return(Json(new { error = true }));
}
}
catch (Exception e)
{
//可能会有两个异常
//找不到文件异常 和 文件被另一个进程占用异常
Console.WriteLine(e.Message);
}
}
int buffersize = Convert.ToInt32(fileTemp.Length);
fileTemp.Read(buffer, 0, buffersize);
fa.Write(buffer, 0, buffersize);
//fileTemp.Read(buffer, 0, 10*1024*1024);
//fa.Write(buffer, 0, 10 * 1024 * 1024);
fileTemp.Flush();
//fileTemp.Close();
fileTemp.Dispose();
if (i == chunksNumber - 1)
{
TempFolder.Delete(true);//删除temp目录
}
}
#region 将文件信息写入数据库
FileModel model = new FileModel();
FileUpload.Models.FileInfo upfile = new FileUpload.Models.FileInfo();
upfile.FileMD5 = md5value;
upfile.FileName = filefullname;
model.FileInfoSet.Add(upfile);
//int result = model.SaveChanges();
int result = 0;
try
{
result = model.SaveChanges();
if (result != 1)
{
return(Json(new { error = true }));
}
}
catch (Exception)
{
return(Json(new { error = true }));
}
#endregion
fa.Flush();
//fa.Close();//关闭流
fa.Dispose();
}
return(Json(new
{
jsonrpc = "2.0",
id = id,
filePath = "/Upload/" + fileFullName
}));
}
// GET: FileUpload
//解决文件上传最大4M的显示可在web.config中设置，当前设置，最大上传大小2GB，最大上传时间一小时
public ActionResult BigFileUp(string guid, string md5value, string chunks, string chunk, string id, string name, string type, string lastModifiedDate, int size, HttpPostedFileBase file)
{
//全程没有做文件后缀或者类型验证，需要的应该在开始就做验证
//object lockObj = null;
if (Request.Files.Count == 0)
{
return(Json(new { error = true }));
}
string ex = Path.GetExtension(file.FileName);
string fileFullName = String.Empty;
string localPath = String.Empty;
try
{
localPath = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload");
}
catch (Exception)
{
localPath = "D:\\代码\\ASP.NET\\FileUpload\\FileUpload\\Upload";//单元测试用
}
//取得分块和信号信息
int fenkuai = 0;
int xuhao = 0;
if (chunks != null && chunk != null)
{
fenkuai = Convert.ToInt32(chunks);
xuhao = Convert.ToInt32(chunk);
//isOk = fenkuai;//每次写入文件后-1，到0了就可以合并了(已放弃)
}
else
{
//文件没有分块直接保存
fileFullName = Guid.NewGuid().ToString("N") + ex;
//file.SaveAs(Path.Combine(HttpRuntime.AppDomainAppPath + "\\Upload", fileFullName));
if (!SaveFile(localPath, fileFullName, file))
{
return(Json(new { error = true }));
}
else
{
}
#region 保存文件md5到数据库
FileModel model = new FileModel();
FileUpload.Models.FileInfo upfile = new FileUpload.Models.FileInfo();
upfile.FileMD5 = md5value;
upfile.FileName = fileFullName;
model.FileInfoSet.Add(upfile);
model.SaveChanges();
#endregion
return(Json(new
{
jsonrpc = "2.0",
id = id,
filePath = "/Upload/" + fileFullName
}));
}
string tempPath = "Upload";
if (guid != null)
{
tempPath = tempPath + "\\" + guid.ToString();
}
//string localPath = Path.Combine(HttpRuntime.AppDomainAppPath, tempPath);//保存的路径
tempPath = Path.Combine(HttpRuntime.AppDomainAppPath, tempPath);//保存的路径
//没有做文件类型验证
//fileFullName = Guid.NewGuid().ToString("N") + ex;
fileFullName = "temp" + xuhao.ToString() + ex;
//应该先把分块的文件存到以guid命名的临时文件夹下，待文件夹下的文件数目达到分块数目后拼接成一个文件，并删除临时文件
if (!SaveFile(tempPath, fileFullName, file))
{
return(Json(new { error = true }));
}
else
{
//分块文件保存成功后要判断是否合并文件
}
#region MyRegion
//if (!System.IO.Directory.Exists(tempPath))
//{
// System.IO.Directory.CreateDirectory(tempPath);//不存在该文件夹就新建一个
//}
//try
//{
// //if (isOk == 1)
// //{
// //}
// file.SaveAs(Path.Combine(tempPath, fileFullName));
// //isOk = isOk - 1;
//}
//catch (Exception)
//{
// //异常处理 Log4Net
// //return HttpNotFound();
// return Json(new { error = true });//新的错误返回方式，更加轻量！
//}
#endregion
//finally
if (xuhao == 0)//第一个分块负责上传的进程留下来合并文件
{
//此处有多线程问题，所以可能出现合并出多个文件的情况，而且下面只判断了文件数目，可能文件还没写入完成！（已解决，看上面）
//待文件夹下的文件数目达到分块数目后拼接成一个文件，并删除临时文件
//fileFullName文件夹
int count = 0;
DirectoryInfo TempFolder = new DirectoryInfo(tempPath);
foreach (var tempFile in TempFolder.GetFiles())
{
count = count + 1;
}
if (count == fenkuai)
{
//while (isOk != 0)
//{
// Thread.Sleep(1000);
//}
//lock (lockObject)
//{
//}
//达到合并的要求了
//序号从0开始
string path = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload");//保存的路径
//string path = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload\\"+guid);//测试：保存的路径
string filefullname = Guid.NewGuid().ToString() + ex;
//下面应该用using块实现
FileStream fa = new FileStream(path + "\\" + filefullname, FileMode.Append, FileAccess.Write);
for (int i = 0; i < count; i++)
{
byte[] buffer = new byte[11 * 1024 * 1024];
//FileStream fileTemp = new FileStream(tempPath + "\\temp"+i+ex, FileMode.Open, FileAccess.Read,FileShare.ReadWrite);
//解决了文件占用问题
int tryTimes = 0;
FileStream fileTemp = null;
while (fileTemp == null)
{
try
{
fileTemp = new FileStream(tempPath + "\\temp" + i + ex, FileMode.Open, FileAccess.Read);
tryTimes++;
if (tryTimes > 100) //次数大于100就结束等待
{
return(Json(new { error = true }));
}
}
catch (Exception)
{
}
}
int buffersize = Convert.ToInt32(fileTemp.Length);
fileTemp.Read(buffer, 0, buffersize);
fa.Write(buffer, 0, buffersize);
//fileTemp.Read(buffer, 0, 10*1024*1024);
//fa.Write(buffer, 0, 10 * 1024 * 1024);
fileTemp.Flush();
//fileTemp.Close();
fileTemp.Dispose();
if (i == count - 1)
{
TempFolder.Delete(true);//删除temp目录
}
}
#region 将文件信息写入数据库
FileModel model = new FileModel();
FileUpload.Models.FileInfo upfile = new FileUpload.Models.FileInfo();
upfile.FileMD5 = md5value;
upfile.FileName = filefullname;
model.FileInfoSet.Add(upfile);
model.SaveChanges();
#endregion
fa.Flush();
//fa.Close();//关闭流
fa.Dispose();
}
}
return(Json(new
{
jsonrpc = "2.0",
id = id,
filePath = "/Upload/" + fileFullName
}));
}
