private static bool WriteFileDownload(HttpResponseBase response, string filePath, string fileName, Encoding encoding)
{
try
{
FileInfo fileInfo = new FileInfo(filePath);
if (fileInfo.Length >= MAXSIZE)
{
throw new Exception(SizeOver2GException);
}
return(ExecuteDownload(response, () =>
{
response.AddHeader("Content-Length", fileInfo.Length.ToString());
response.AddHeader("Content-Transfer-Encoding", "binary");
response.WriteFile(fileInfo.FullName);
}, true, filePath, fileName, encoding));
}
catch
{
if (response != null)
{
response.Close();
}
throw;
}
}
protected override void WriteFile(HttpResponseBase response)
{
base.WriteFile(response);
response.Flush();
response.Close();
File.Delete(FileName);
}
/// <summary>
/// End a ServiceStack Request
/// </summary>
public static void EndRequest(this HttpResponseBase httpRes, bool skipHeaders = false)
{
if (!skipHeaders)
{
httpRes.ApplyGlobalResponseHeaders();
}
httpRes.Close();
HostContext.CompleteRequest(null);
}
public override void ExecuteResult(ControllerContext context)
{
HttpResponseBase response = context.HttpContext.Response;
response.Clear();
response.ContentType = "text/csv";
response.AddHeader("content-disposition", "attachment; filename=QueryResults.csv");
response.AddHeader("content-length", Encoding.UTF8.GetByteCount(RawCsv).ToString());
response.AddHeader("Pragma", "public");
response.Write(RawCsv);
response.Flush();
response.Close();
}
private static bool WriteFilePortionDownload(HttpResponseBase response, string filePath, string fileName, Encoding encoding)
{
FileStream fileStream = null;
try
{
return(ExecuteDownload(response, () =>
{
byte[] buffer = new byte[CHUNKSIZE];
using (fileStream = File.OpenRead(filePath))
{
response.AddHeader("Content-Length", fileStream.Length.ToString());
long fileSize = fileStream.Length;
while (fileSize > 0 && response.IsClientConnected)
{
int readSize = fileStream.Read(buffer, 0, Convert.ToInt32(CHUNKSIZE));
response.OutputStream.Write(buffer, 0, readSize);
response.Flush();
fileSize = fileSize - readSize;
}
}
response.Close();
}, false, filePath, fileName, encoding));
}
catch
{
if (fileStream != null)
{
fileStream.Close();
}
if (response != null)
{
response.Close();
}
throw;
}
}
/// <summary>
/// Unauthorization handler
/// </summary>
/// <param name="filterContext"></param>
protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
{
HttpResponseBase httpResponse = GetResponse(filterContext);
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.Forbidden;
//httpResponse.Status = "Forbidden";
httpResponse.StatusDescription = "Unauthorized Page";
httpResponse.End();
httpResponse.Close();
//filterContext.Result = new HttpUnauthorizedResult();
base.HandleUnauthorizedRequest(filterContext);
}
public override void ExecuteResult(ControllerContext context)
{
HttpResponseBase response = context.HttpContext.Response;
string attachment = "attachment; filename=ExecutionPlan.sqlplan";
response.Clear();
response.ContentType = "text/xml";
response.AddHeader("content-disposition", attachment);
response.AddHeader("Pragma", "public");
response.Write(plan);
response.Flush();
response.Close();
}
public virtual void Export()
{
_response.Clear();
_response.ClearHeaders();
_response.AppendHeader("Content-Length", (this as IExport).Length.ToString());
_response.ContentType = (this as IExport).ContentType;
_response.AppendHeader("Content-Disposition", $"attachment;filename=\"{GetName}.{(this as IExport).Extension}\"");
_response.ContentType = (this as IExport).ContentType;
_response.Write(_result);
_response.End();
_response.Close();
}
private static bool TransmitFileDownload(HttpResponseBase response, string filePath, string fileName, Encoding encoding)
{
try
{
return(ExecuteDownload(response, () =>
{
response.TransmitFile(filePath);
}, true, filePath, fileName, encoding));
}
catch
{
if (response != null)
{
response.Close();
}
throw;
}
}
internal void SendErrorResponse(HttpContextBase context, int httpStatusCode, int httpSubStatusCode, string httpStatusText, Action <HttpResponseBase> customResponseAction, bool closeConnection)
{
HttpResponseBase response = context.Response;
response.Clear();
response.StatusCode = httpStatusCode;
response.SubStatusCode = httpSubStatusCode;
response.StatusDescription = httpStatusText;
if (customResponseAction != null)
{
customResponseAction(response);
}
if (closeConnection)
{
response.Close();
}
context.ApplicationInstance.CompleteRequest();
}
/// <summary>
/// 网页文件字节流下载
/// </summary>
/// <param name="response">Page.Request对象</param>
/// <param name="bytes">字节流</param>
/// <param name="fileName">文件名 如:pic.jpg file.mp4 file.csv</param>
/// <returns>返回是否成功</returns>
public static bool ResponseFile(HttpResponseBase response, byte[] bytes, string fileName)
{
try
{
response.AddHeader("Connection", "Keep-Alive");
response.ContentType = "application/octet-stream";
//通知浏览器下载文件而不是打开
response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
response.BinaryWrite(bytes);
response.Flush();
response.End();
response.Close();
}
catch
{
return(false);
}
return(true);
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="downloadPath"></param>
/// <param name="server"></param>
/// <param name="response"></param>
/// <param name="fileName"></param>
public static void DownloadFile(this string downloadPath, HttpServerUtilityBase server, HttpResponseBase response, string fileName)
{
if (!File.Exists(downloadPath))
{
Console.WriteLine("下载的资源不存在!");
return;
}
FileStream iStream = null;
byte[] buffer;
try
{
var downloadFile = new FileInfo(downloadPath);
//response.Clear();
response.ClearHeaders();
response.ContentType = "application/octet-stream";
response.AppendHeader("Content-Disposition", "attachment;filename=" + server.UrlEncode(fileName + ".rar"));
response.AppendHeader("Content-Length", downloadFile.Length.ToString());
iStream = new FileStream(downloadPath, FileMode.Open, FileAccess.Read, FileShare.Read);
var dataToRead = iStream.Length;
buffer = new byte[dataToRead];
iStream.Read(buffer, 0, buffer.Count());
iStream.Close();
response.BinaryWrite(buffer);
response.Buffer = true;
response.Flush();
response.Close();
response.End();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (iStream != null)
{
iStream.Close();
}
}
}
public override void ExecuteResult(ControllerContext context)
{
string fileName = _fileName;
HttpResponseBase response = context.HttpContext.Response;
if (File.Exists(_filePath))
{
FileStream fs = null;
byte[] fileBuffer = new byte[10240000];//每次读取10240000字节大小的数据,10240000字节(b)=9.765625兆字节(mb)
try
{
using (fs = File.OpenRead(_filePath))
{
long totalLength = fs.Length;
response.ContentType = "application/octet-stream";
response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName));
while (totalLength > 0 && response.IsClientConnected) //持续传输文件
{
int length = fs.Read(fileBuffer, 0, fileBuffer.Length); //每次读取10240000个字节长度的内容
fs.Flush();
response.OutputStream.Write(fileBuffer, 0, length); //写入到响应的输出流
response.Flush(); //刷新响应
totalLength = totalLength - length;
}
response.Close();//文件传输完毕，关闭相应流
}
}
catch (Exception ex)
{
response.Write(ex.Message);
}
finally
{
if (fs != null)
{
fs.Close();//最后记得关闭文件流
}
}
}
}
private static bool BinaryWriteDownload(HttpResponseBase response, string filePath, string fileName, Encoding encoding)
{
FileStream fileStream = null;
try
{
return(ExecuteDownload(response, () =>
{
using (fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
if (fileStream.Length >= MAXSIZE)
{
throw new Exception(SizeOver2GException);
}
response.AddHeader("Content-Length", fileStream.Length.ToString());
byte[] bytes = new byte[(int)fileStream.Length];
fileStream.Read(bytes, 0, bytes.Length);
fileStream.Close();
response.BinaryWrite(bytes);
}
}, true, filePath, fileName, encoding));
}
catch
{
if (fileStream != null)
{
fileStream.Close();
}
if (response != null)
{
response.Close();
}
throw;
}
}
/// <summary>
/// End a HttpHandler Request
/// </summary>
public static void EndHttpHandlerRequest(this HttpResponseBase httpRes, bool skipHeaders = false, bool skipClose = false, bool closeOutputStream = false, Action <HttpResponseBase> afterHeaders = null)
{
if (!skipHeaders)
{
httpRes.ApplyGlobalResponseHeaders();
}
if (afterHeaders != null)
{
afterHeaders(httpRes);
}
if (closeOutputStream)
{
httpRes.CloseOutputStream();
}
else if (!skipClose)
{
httpRes.Close();
}
//skipHeaders used when Apache+mod_mono doesn't like:
//response.OutputStream.Flush();
//response.Close();
}
public override void ExecuteResult(ControllerContext context)
{
HttpResponseBase response = context.HttpContext.Response;
if (File.Exists(FileName))
{
FileStream fs = null;
byte[] fileBuffer = new byte[BufferSize];//每次读取4096字节大小的数据
try
{
using (fs = File.OpenRead(FileName))
{
long totalLength = fs.Length;
response.ContentType = ContentType;
response.AddHeader("Content-Length", totalLength.ToString());
response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(Path.GetFileName(FileName)));
while (totalLength > 0 && response.IsClientConnected) //持续传输文件
{
int length = fs.Read(fileBuffer, 0, fileBuffer.Length); //每次读取4096个字节长度的内容
fs.Flush();
response.OutputStream.Write(fileBuffer, 0, length); //写入到响应的输出流
response.Flush(); //刷新响应
totalLength = totalLength - length;
}
response.Close();//文件传输完毕，关闭相应流
}
}
catch (Exception ex)
{
response.Write(ex.Message);
}
finally
{
fs?.Close();//最后记得关闭文件流
}
}
}
private ActionResult down(string path, string fileName)
{
string downPath = GetUploadPath(path);
if (!System.IO.File.Exists(downPath))
{
return(Content("文件不存在！"));
}
if (CheckImage(downPath))
{
return(File(GetImageByte(downPath), @"image/jpeg"));
}
if (!fileName.Contains("."))
{
fileName += Path.GetExtension(downPath);
}
HttpResponseBase response = this.HttpContext.Response;
HttpServerUtilityBase server = this.HttpContext.Server;
response.Clear();
response.Buffer = true;
if (Request.Browser.Browser == "Firefox")
{
Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
}
else
{
Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
}
response.ContentType = CheckImage(downPath) ? "image/*" : "application/octet-stream";
//response.AppendHeader("Content-Length", "attachment;filename=" + fileName);
response.TransmitFile(downPath);
response.Flush();
response.Close();
return(null);
}
public override void Close()
{
_response.Close();
}
public void OpenStream()
{
System.IO.Stream iStream = null;
byte[] buffer = new Byte[4096];
int length;
long dataToRead;
try
{
if (VDXApplicationSettings.IsLocalEnviornment())
{
iStream = new System.IO.FileStream(filepath, System.IO.FileMode.Open,
System.IO.FileAccess.Read, System.IO.FileShare.Read);
}
else
{
VDXCloudBlob blobService = new VDXCloudBlob(this.filename);
iStream = blobService.ExecuteActionStream(VDXCloudAction.READ);
}
// Total bytes to read:
dataToRead = iStream.Length;
Response.AddHeader("Accept-Ranges", "bytes");
Response.ContentType = "video/mp4";
int startbyte = 0;
if (!String.IsNullOrEmpty(Request.Headers["Range"]))
{
string[] range = Request.Headers["Range"].Split(new char[] { '=', '-' });
startbyte = Int32.Parse(range[1]);
iStream.Seek(startbyte, SeekOrigin.Begin);
Response.StatusCode = 206;
Response.AddHeader("Content-Range", String.Format(" bytes {0}-{1}/{2}", startbyte, dataToRead - 1, dataToRead));
}
while (dataToRead > 0)
{
// Verify that the client is connected.
if (Response.IsClientConnected)
{
// Read the data in buffer.
length = iStream.Read(buffer, 0, buffer.Length);
// Write the data to the current output stream.
Response.OutputStream.Write(buffer, 0, buffer.Length);
// Flush the data to the HTML output.
Response.Flush();
buffer = new Byte[buffer.Length];
dataToRead = dataToRead - buffer.Length;
}
else
{
//prevent infinite loop if user disconnects
dataToRead = -1;
}
}
}
catch (HttpException htx)
{
if (VDXApplicationSettings.IsLocalEnviornment())
{
System.Diagnostics.Debug.WriteLine("HttpException: " + htx.Message);
}
else
{
CloudLogError.ErrorMsg(htx.Message);
}
}
catch (Exception ex)
{
if (VDXApplicationSettings.IsLocalEnviornment())
{
System.Diagnostics.Debug.WriteLine("HttpException: " + ex.Message);
}
else
{
CloudLogError.ErrorMsg(ex.Message);
}
}
finally
{
if (iStream != null)
{
//Close the file.
iStream.Close();
}
Response.Close();
}
}
public override void Close()
{
proxiedResponse.Close();
}
public override void Close()
{
_httpResponseBase.Close();
}
private static void AbortConnection(HttpResponseBase httpResponseBase)
{
// TODO: DevDiv bug #381233 -- call HttpResponse.Abort when it becomes available in 4.5
httpResponseBase.Close();
}
/// <summary>
/// Converts a <see cref="HttpResponseMessage"/> to an <see cref="HttpResponseBase"/> and disposes the
/// <see cref="HttpResponseMessage"/> and <see cref="HttpRequestMessage"/> upon completion.
/// </summary>
/// <param name="httpContextBase">The HTTP context base.</param>
/// <param name="response">The response to convert.</param>
/// <param name="request">The request (which will be disposed).</param>
/// <returns>A <see cref="Task"/> representing the conversion of an <see cref="HttpResponseMessage"/> to an <see cref="HttpResponseBase"/>
/// including writing out any entity body.</returns>
internal static Task ConvertResponse(HttpContextBase httpContextBase, HttpResponseMessage response, HttpRequestMessage request)
{
Contract.Assert(httpContextBase != null);
Contract.Assert(response != null);
Contract.Assert(request != null);
HttpResponseBase httpResponseBase = httpContextBase.Response;
httpResponseBase.StatusCode = (int)response.StatusCode;
httpResponseBase.StatusDescription = response.ReasonPhrase;
httpResponseBase.TrySkipIisCustomErrors = true;
EnsureSuppressFormsAuthenticationRedirect(httpContextBase);
CopyHeaders(response.Headers, httpContextBase);
CacheControlHeaderValue cacheControl = response.Headers.CacheControl;
// TODO 335085: Consider this when coming up with our caching story
if (cacheControl == null)
{
// DevDiv2 #332323. ASP.NET by default always emits a cache-control: private header.
// However, we don't want requests to be cached by default.
// If nobody set an explicit CacheControl then explicitly set to no-cache to override the
// default behavior. This will cause the following response headers to be emitted:
// Cache-Control: no-cache
// Pragma: no-cache
// Expires: -1
httpContextBase.Response.Cache.SetCacheability(HttpCacheability.NoCache);
}
Task responseTask = null;
bool isBuffered = false;
if (response.Content != null)
{
CopyHeaders(response.Content.Headers, httpContextBase);
// Select output buffering by the kind of content
isBuffered = IsOutputBufferingNecessary(response.Content);
httpResponseBase.BufferOutput = isBuffered;
responseTask = response.Content.CopyToAsync(httpResponseBase.OutputStream);
}
else
{
responseTask = TaskHelpers.Completed();
}
return(responseTask
.Catch((info) =>
{
if (isBuffered)
{
// Failure during the CopyToAsync needs to stop any partial content from
// reaching the client. If it was during a buffered write, we will give
// them InternalServerError with zero-length content.
httpResponseBase.SuppressContent = true;
httpResponseBase.Clear();
httpResponseBase.ClearContent();
httpResponseBase.ClearHeaders();
httpResponseBase.StatusCode = (int)Net.HttpStatusCode.InternalServerError;
}
else
{
// Any failure in non-buffered mode has already written out StatusCode and possibly content.
// This means the client will receive an OK but the content is incomplete.
// The proper action here is to abort the connection, but HttpResponse.Abort is a 4.5 feature.
// TODO: DevDiv bug #381233 -- call HttpResponse.Abort when it becomes available
httpResponseBase.Close();
}
// We do not propagate any errors up, or we will get the
// standard ASP.NET html page. We want empty content or
// a closed connection.
return info.Handled();
})
.Finally(
() =>
{
request.DisposeRequestResources();
request.Dispose();
response.Dispose();
}));
}
private static void AbortConnection(HttpResponseBase httpResponseBase)
{
// TODO: DevDiv bug #381233 -- call HttpResponse.Abort when it becomes available in 4.5
httpResponseBase.Close();
}
/// <summary>
/// 必须要有Content-Length和Content-Disposition以及ContentType
/// </summary>
/// <param name="filePath"></param>
/// <param name="contentType"></param>
/// <param name="Response"></param>
public static void DownLoad(string filePath, string fileName, string contentType, HttpResponseBase Response, bool deleteAfterDownload = false)
{
//指定块大小
long chunkSize = 204800;
//建立一个200K的缓冲区
byte[] buffer = new byte[chunkSize];
//已读的字节数
long dataToRead = 0;
FileStream stream = null;
try
{
//打开文件
stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
dataToRead = stream.Length;
//添加Http头
Response.ContentType = contentType;
//解决,火狐浏览器下载时，中文名乱码
if (HttpContext.Current.Request.Browser.Browser == "Firefox")
{
//Response.AddHeader("Content-Disposition", "attachement;filename*=utf-8'zh_cn'" + fileName);
Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
}
else
{
Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName).Replace("+", "%20"));
}
Response.AddHeader("Content-Length", dataToRead.ToString());
while (dataToRead > 0)
{
if (Response.IsClientConnected)
{
int length = stream.Read(buffer, 0, Convert.ToInt32(chunkSize));
Response.OutputStream.Write(buffer, 0, length);
Response.Flush();
Response.Clear();
dataToRead -= length;
}
else
{
//防止client失去连接
dataToRead = -1;
}
}
}
catch (Exception ex)
{
Response.Write("Error:" + ex.Message);
}
finally
{
if (stream != null)
{
stream.Close();
if (deleteAfterDownload && File.Exists(filePath))
{
string path = Path.GetDirectoryName(filePath);
if (path.Length > RWUtility.GetResPath("").Length)
{
try { Directory.Delete(Path.GetDirectoryName(filePath), true); }
catch { }
}
}
}
Response.Close();
}
}
