/// <summary>
/// 一次性上传
/// </summary>
/// <param name="uploadNode"></param>
/// <returns></returns>
public static UploadResult Process(UploadNode uploadNode)
{
try
{
string ex = Path.GetExtension(uploadNode.file.FileName);
string localName = Guid.NewGuid().ToString("N") + ex;
if (!Directory.Exists(uploadNode.localPath))
{
Directory.CreateDirectory(uploadNode.localPath);
}
uploadNode.file.SaveAs(Path.Combine(uploadNode.localPath, localName));
return(new UploadResult()
{
Status = true, LocalName = localName
});
}
catch (Exception ex)
{
return(new UploadResult()
{
Status = false, Error = ex.ToString()
});
}
}
/// <summary>
/// 分片合并,分片文件上传2
/// </summary>
/// <param name="uploadNode"></param>
/// <returns></returns>
public static UploadResult MergeSplitFiles(UploadNode uploadNode)
{//uploadNode.guid + uploadNode.id =唯一
try
{
string sourcePath = Path.Combine(uploadNode.localPath, uploadNode.guid + uploadNode.id + "/"); //源数据文件夹
var fileGuid = Guid.NewGuid().ToString("N");
string targetPath = Path.Combine(uploadNode.localPath, fileGuid + "." + uploadNode.fileExt); //合并后的文件
DirectoryInfo dicInfo = new DirectoryInfo(sourcePath);
if (Directory.Exists(Path.GetDirectoryName(sourcePath)))
{
FileInfo[] files = dicInfo.GetFiles();
foreach (FileInfo file in files.OrderBy(f => int.Parse(f.Name)))
{
FileStream addFile = new FileStream(targetPath, FileMode.Append, FileAccess.Write);
BinaryWriter AddWriter = new BinaryWriter(addFile);
//获得上传的分片数据流
Stream stream = file.Open(FileMode.Open);
BinaryReader TempReader = new BinaryReader(stream);
//将上传的分片追加到临时文件末尾
AddWriter.Write(TempReader.ReadBytes((int)stream.Length));
//关闭BinaryReader文件阅读器
TempReader.Close();
stream.Close();
AddWriter.Close();
addFile.Close();
}
DeleteFolder(sourcePath);
string filePathName = string.Empty;
filePathName = fileGuid + uploadNode.fileExt;
return(new UploadResult()
{
Status = true, LocalName = filePathName
});
}
else
{
return(new UploadResult()
{
Status = false, Error = "（被分片文件）文件夹丢失"
});
}
}
catch (Exception ex)
{
return(new UploadResult()
{
Status = false, Error = ex.ToString()
});
}
}
public void Upload()
{
var uploadNode = new UploadNode();
uploadNode.chunked = Request["chunks"] == null ? false : true;
uploadNode.guid = Request["guid"] == null ? null : Request["guid"]; //自定义
uploadNode.fileExt = Request["fileExt"] == null ? null : Request["fileExt"]; //自定义，合并专用
uploadNode.chunks = Request["chunks"] == null ? 0 : int.Parse(Request["chunks"]);
uploadNode.chunk = Request["chunk"] == null ? 0 : int.Parse(Request["chunk"]);
uploadNode.id = Request["id"] == null ? null : Request["id"];
uploadNode.name = Request["name"] == null ? null : Request["name"];
uploadNode.type = Request["type"] == null ? null : Request["type"];
uploadNode.lastModifiedDate = Request["lastModifiedDate"] == null ? null : Request["lastModifiedDate"];
uploadNode.size = Request["size"] == null ? 0 : int.Parse(Request["size"]);
uploadNode.file = Request.Files.Count == 0 ? null : Request.Files[0];
string saveFolder = Request["saveFolder"] == null ? null : Request["saveFolder"];
uploadNode.localPath = System.IO.Path.Combine(Server.MapPath("~/Upload"), saveFolder);//自定义
UploadResult uploadReslut = null;
if (uploadNode.fileExt == null && uploadNode.chunks == 0)
{//上传
uploadReslut = FileUpload.Process(uploadNode);
}
else if (uploadNode.fileExt == null && uploadNode.chunks > 0)
{//分片上传
uploadReslut = FileUpload.ProcessSplit(uploadNode);
}
else if (uploadNode.fileExt != null && uploadNode.chunks == 0)
{//合并分片
uploadReslut = FileUpload.MergeSplitFiles(uploadNode);
}
//string json = JsonConvert.SerializeObject(uploadReslut);
//HttpResponseMessage result = new HttpResponseMessage { Content = new StringContent(json, Encoding.GetEncoding("UTF-8"), "application/json") };
//return result;
Response.Write(JsonConvert.SerializeObject(uploadReslut));
}
/// <summary>
/// 分片上传,分片文件上传1
/// </summary>
/// <param name="uploadNode"></param>
/// <returns></returns>
public static UploadResult ProcessSplit(UploadNode uploadNode)
{//uploadNode.guid + uploadNode.id =唯一
try
{
string guidFolder = Path.Combine(uploadNode.localPath, uploadNode.guid + uploadNode.id) + "/";
string localName = Path.Combine(guidFolder, uploadNode.chunk.ToString());
//建立临时传输文件夹
if (!Directory.Exists(Path.GetDirectoryName(guidFolder)))
{
Directory.CreateDirectory(guidFolder);
}
FileStream addFile = new FileStream(localName, FileMode.Append, FileAccess.Write);
BinaryWriter AddWriter = new BinaryWriter(addFile);
//获得上传的分片数据流
HttpPostedFileBase splitFile = uploadNode.file;
Stream stream = splitFile.InputStream;
BinaryReader TempReader = new BinaryReader(stream);
//将上传的分片追加到临时文件末尾
AddWriter.Write(TempReader.ReadBytes((int)stream.Length));
//关闭BinaryReader文件阅读器
TempReader.Close();
stream.Close();
AddWriter.Close();
addFile.Close();
return(new UploadResult()
{
Status = true, LocalName = localName, chunked = uploadNode.chunked, guid = uploadNode.guid, fileExt = Path.GetExtension(uploadNode.file.FileName)
});
}
catch (Exception ex)
{
return(new UploadResult()
{
Status = false, Error = ex.ToString()
});
}
}