/// <summary>
/// 断点续传检测、MD5检测
/// </summary>
/// <returns></returns>
public UploaderResult ProcessCheck(HttpRequestBase request, string saveFileName, string savepath = null
, Func <HttpPostedFileBase, string> setfilename = null, Func <string, bool> md5check = null)
{
long o = _webUploaderField.Size % _webUploaderField.Chunksize;
int chunks = _webUploaderField.Chunksize != 0 ?
Convert.ToInt32(_webUploaderField.Size / _webUploaderField.Chunksize) : 1;
if (o != 0)
{
chunks = chunks + 1;
}
UploaderResult obj = new UploaderResult();
if (md5check(_webUploaderField.Md5))
{
obj.Filish = true;
obj.FileExtist = true;//表明文件已存在于服务器
obj.Message = "文件已存在于服务器、跳过上传";
return(obj);
}
WebUploader.allChunks[_webUploaderField.FileSavePath] = new List <int>();
int j = 0;
for (int i = 0; i < chunks; i++)
{
if (File.Exists(_webUploaderField.FileSaveChunkPath + i.ToString()))
{
obj.ChunkNum.Add(i);//服务器已经存在的区块编号
WebUploader.allChunks[_webUploaderField.FileSavePath].Add(i);
j++;
}
}
obj.Filish = false;
obj.Message = string.Format("服务器已经存在区块数量{0},总区块数量{1},占比{2}%", j
, _webUploaderField.Chunks, _webUploaderField.Chunks != 0 && j != 0
? Convert.ToDouble(Convert.ToDouble(j) / Convert.ToDouble(_webUploaderField.Chunks)) * 100 : 0);
return(obj);
}
/// <summary>
/// 上传分片文件
/// </summary>
/// <param name="request"></param>
/// <param name="saveFileName"></param>
/// <param name="savepath"></param>
/// <param name="setfilename"></param>
/// <param name="md5check"></param>
/// <returns></returns>
public UploaderResult Process(HttpRequestBase request, string saveFileName, string savepath = null
, Func <HttpPostedFileBase, string> setfilename = null, Func <string, bool> md5check = null)
{
InitWebUploaderField(request, savepath, saveFileName);
#region 跳转到分片检测
if (request[chunkFlag] != null && Convert.ToBoolean(request[chunkFlag]))
{
return(ProcessCheck(request, saveFileName, savepath, setfilename, md5check));
}
#endregion
UploaderResult obj = new UploaderResult();
_webUploaderField.File = request.Files.Count == 0 ? null : request.Files[0];
_webUploaderField.Filename = _webUploaderField.File == null ? "" : _webUploaderField.File.FileName;
if (_webUploaderField.File == null)
{
obj.Message = "上传文件为空";
return(obj);
}
//创建文件夹（查看路径是否存在）
if (!Directory.Exists(_webUploaderField.Path))
{
Directory.CreateDirectory(_webUploaderField.Path);
}
if (_webUploaderField.Chunks != 0)
{
WebUploader.allChunks[_webUploaderField.FileSavePath].Add(_webUploaderField.Chunk);
//_webUploaderField.File.SaveAs(_webUploaderField.FileSaveChunkPath + _webUploaderField.Chunk)
try
{
Stream stream = _webUploaderField.File.InputStream;
byte[] b = new byte[stream.Length];//新建一个字节数组
stream.Read(b, 0, b.Length);
// 设置当前流的位置为流的开始
stream.Seek(0, SeekOrigin.Begin);
using (FileStream fstream = new FileStream(_webUploaderField.FileSaveChunkPath + _webUploaderField.Chunk, FileMode.Create, FileAccess.Write))
{
fstream.Write(b, 0, b.Length);
}
}
catch
{
}
obj.Filish = false;
obj.Message = string.Format("当前上传区块{0},总区块：{1},模式：分片上传", _webUploaderField.Chunk, _webUploaderField.Chunks);
if (WebUploader.allChunks[_webUploaderField.FileSavePath].Count == _webUploaderField.Chunks)
{
var file = _webUploaderField.FileSavePath;
var currentSavePath = file.Substring(0, file.LastIndexOf('\\'));
var fileSuffix = file.Substring(file.LastIndexOf("."), file.Length - file.LastIndexOf("."));
var sFileName = file.Substring(file.LastIndexOf('\\') + 1, file.LastIndexOf('.') - file.LastIndexOf('\\') - 1);
//saveFileName = saveFileName + fileSuffix;
saveFileName = (currentSavePath + "\\" + sFileName + fileSuffix);
using (FileStream fsw = new FileStream(saveFileName, FileMode.Create, FileAccess.Write, FileShare.Write))
{
BinaryWriter bw = new BinaryWriter(fsw);
for (int j = 0; j < _webUploaderField.Chunks; j++)
{
if (File.Exists(_webUploaderField.FileSaveChunkPath + j))
{
bw.Write(File.ReadAllBytes(_webUploaderField.FileSaveChunkPath + j));
bw.Flush();
File.Delete(_webUploaderField.FileSaveChunkPath + j);
}
else
{
}
}
//bw.Flush();
}
List <int> filekeyvalue = new List <int>();
obj.Name = _webUploaderField.Filename;
WebUploader.allChunks.TryRemove(_webUploaderField.FileSavePath, out filekeyvalue);
obj.Filish = true;
obj.Message = string.Format("上传已全部完成");
}
}
else
{
_webUploaderField.File.SaveAs(_webUploaderField.FileSavePath);
obj.Filish = true;
obj.Name = _webUploaderField.Filename; //文件最终保存名称
obj.Message = "上传已完成、模式 no chunk";
}
return(obj);
}
