public virtual void ImageStreamFromFileID(HttpContext context)
{
YZRequest request = new YZRequest(context);
string fileid = request.GetString("fileid", null);
ScaleMode scale = request.GetEnum <ScaleMode>("scale", ScaleMode.None);
ImageFormat format = YZImageHelper.ParseImageFormat(request.GetString("format", "png"));
int width = 0;
int height = 0;
if (scale != ScaleMode.None)
{
width = request.GetInt32("width");
height = request.GetInt32("height");
}
AttachmentInfo attachment;
string filePath = this.GetImageFileFromFileID(fileid, scale, width, height, format, out attachment);
if (String.IsNullOrEmpty(filePath))
{
if (attachment == null)
{
filePath = context.Server.MapPath("~/YZSoft/Attachment/img/EmptyImageAttachment.png");
}
else
{
if (YZMimeMapping.isVedioFile(attachment.Ext))
{
filePath = context.Server.MapPath("~/YZSoft/Attachment/img/EmptyImageAttachment.png");
}
else
{
filePath = context.Server.MapPath("~/YZSoft/Attachment/img/EmptyImageAttachment.png");
}
}
}
string fileName = Path.GetFileNameWithoutExtension(attachment == null ? "empty.png" : attachment.Name);
if (String.IsNullOrEmpty(Path.GetExtension(filePath))) //原图
{
fileName += attachment.Ext;
}
else
{
fileName += Path.GetExtension(filePath);
}
this.ProcessResponseHeader(context, fileName, true);
context.Response.TransmitFile(filePath);
}
public JObject Base64ImageFromFileID(HttpContext context)
{
YZRequest request = new YZRequest(context);
string fileid = request.GetString("fileid", null);
ScaleMode scale = request.GetEnum <ScaleMode>("scale", ScaleMode.None);
ImageFormat format = YZImageHelper.ParseImageFormat(request.GetString("format", "png"));
int width = 0;
int height = 0;
if (scale != ScaleMode.None)
{
width = request.GetInt32("width");
height = request.GetInt32("height");
}
AttachmentInfo attachment;
string filePath = this.GetImageFileFromFileID(fileid, scale, width, height, format, out attachment);
if (String.IsNullOrEmpty(filePath))
{
if (YZMimeMapping.isVedioFile(attachment.Ext))
{
filePath = context.Server.MapPath("~/YZSoft/Attachment/img/EmptyImageAttachment.png");
}
else
{
filePath = context.Server.MapPath("~/YZSoft/Attachment/img/EmptyImageAttachment.png");
}
}
string fileName = Path.GetFileNameWithoutExtension(attachment.Name) + Path.GetExtension(filePath);
Bitmap bmp = new Bitmap(filePath);
MemoryStream ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
byte[] arr = new byte[ms.Length];
ms.Position = 0;
ms.Read(arr, 0, (int)ms.Length);
ms.Close();
JObject rv = new JObject();
rv["base64"] = Convert.ToBase64String(arr);
return(rv);
}
public AttachmentInfo GetAttachmentInfo(HttpContext context)
{
YZRequest request = new YZRequest(context);
string fileid = request.GetString("fileid");
AttachmentInfo rv;
using (IYZDbProvider provider = YZDbProviderManager.DefaultProvider)
{
using (IDbConnection cn = provider.OpenConnection())
{
rv = AttachmentManager.GetAttachmentInfo(provider, cn, fileid);
}
}
rv.MimeType = YZMimeMapping.GetMimeType(rv.Ext);
return(rv);
}
protected virtual string GetImageFile(AttachmentInfo attachment, ScaleMode scale, int width, int height, ImageFormat format)
{
if (attachment == null)
{
return(null);
}
string filePath;
if (YZMimeMapping.isVedioFile(attachment.Ext))
{
filePath = this.GetVideoOutputFile(attachment, scale, width, height, format, null);
}
else
{
filePath = this.GetImageOutputFile(attachment, scale, width, height, format, null);
}
return(filePath);
}
protected virtual void ProcessResponseHeader(HttpContext context, string fileName, bool attachment)
{
string fileExt = Path.GetExtension(fileName);
string contentType = YZMimeMapping.GetMimeType(fileExt);
fileName = context.Server.UrlEncode(fileName);
fileName = fileName.Replace("%5b", "[");
fileName = fileName.Replace("%5d", "]");
context.Response.AppendHeader("Content-Type", contentType);
if (attachment)
{
context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
}
else
{
context.Response.AppendHeader("Content-Disposition", "filename=" + fileName);
}
context.Response.AppendHeader("Accept-Ranges", "bytes");
}
public virtual void Download(HttpContext context)
{
YZRequest request = new YZRequest(context);
bool osfile = request.GetBool("osfile", false);
//if (context.Request.Headers["If-None-Match"] != null || context.Request.Headers["If-Modified-Since"] != null)
//{
// context.Response.Status = "304 Not Modified";
// context.Response.Cache.AppendCacheExtension("max-age=" + 365 * 24 * 60 * 60);
// context.Response.Cache.SetExpires(DateTime.Now.AddYears(1));
// context.Response.AppendHeader("ETag", "Never_Modify");
// context.Response.Cache.SetETag("Never_Modify");
// context.Response.Cache.SetLastModified(DateTime.Now.AddMinutes(-1));
// context.Response.End();
// return;
//}
string filePath;
string fileName;
long fileSize;
string fileExt;
if (osfile)
{
string root = request.GetString("root");
string path = request.GetString("path");
fileName = request.GetString("name");
string rootPath = context.Server.MapPath(YZSoft.FileSystem.OSDirectoryManager.GetRootPath(root));
filePath = Path.Combine(rootPath, path, fileName);
if (!File.Exists(filePath))
{
throw new Exception(String.Format(Resources.YZStrings.Aspx_Upload_FileIDNotFount, fileName));
}
FileInfo fileInfo = new FileInfo(filePath);
fileSize = fileInfo.Length;
fileExt = fileInfo.Extension;
}
else
{
string fileId = request.GetString("fileid");
AttachmentInfo attachment;
using (IYZDbProvider provider = YZDbProviderManager.DefaultProvider)
{
using (IDbConnection cn = provider.OpenConnection())
{
attachment = AttachmentManager.GetAttachmentInfo(provider, cn, fileId);
}
}
fileName = attachment.Name;
fileExt = attachment.Ext;
fileSize = attachment.Size;
filePath = AttachmentInfo.FileIDToPath(fileId, AttachmentManager.AttachmentRootPath);
if (!File.Exists(filePath))
{
throw new Exception(String.Format(Resources.YZStrings.Aspx_Upload_FileIDNotFount, fileId));
}
}
string fileExtNoDot = fileExt == null ? "" : fileExt.TrimStart('.');
bool contentDisposition = true;
string range = context.Request.Headers["Range"];
string contentType = YZMimeMapping.GetMimeType(fileExt);
context.Response.AppendHeader("Content-Type", contentType);
if (contentDisposition)
{
context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + context.Server.UrlEncode(fileName));
}
context.Response.AppendHeader("Accept-Ranges", "bytes");
if (range == null)
{
FileInfo fileinfo = new FileInfo(filePath);
//全新下载
context.Response.AppendHeader("Content-Length", fileinfo.Length.ToString());
//context.Response.CacheControl = HttpCacheability.Public.ToString();
//context.Response.Cache.AppendCacheExtension("max-age=" + 365 * 24 * 60 * 60);
//context.Response.Cache.SetExpires(DateTime.Now.AddYears(1));
//context.Response.AppendHeader("ETag", "Never_Modify");
//context.Response.Cache.SetETag("Never_Modify");
//context.Response.Cache.SetLastModified(DateTime.Now.AddMinutes(-1));
context.Response.TransmitFile(filePath);
}
else
{
//断点续传以及多线程下载支持
string[] file_range = range.Substring(6).Split(new char[1] {
'-'
});
if (string.IsNullOrEmpty(file_range[0]))
{
file_range[0] = "0";
}
if (string.IsNullOrEmpty(file_range[1]))
{
file_range[1] = fileSize.ToString();
}
context.Response.Status = "206 Partial Content";
context.Response.AppendHeader("Content-Range", "bytes " + file_range[0] + "-" + file_range[1] + "/" + fileSize.ToString());
context.Response.AppendHeader("Content-Length", (Int32.Parse(file_range[1]) - Int32.Parse(file_range[0])).ToString());
context.Response.TransmitFile(filePath, long.Parse(file_range[0]), (long)(Int32.Parse(file_range[1]) - Int32.Parse(file_range[0])));
}
}
public virtual void Preview(HttpContext context)
{
YZRequest request = new YZRequest(context);
bool osfile = request.GetBool("osfile", false);
BPMObjectNameCollection supports = BPMObjectNameCollection.FromStringList(request.GetString("supports", null), ',');
string filePath;
string fileName;
long fileSize;
string fileExt;
if (osfile)
{
string root = request.GetString("root");
string path = request.GetString("path");
fileName = request.GetString("name");
string rootPath = context.Server.MapPath(YZSoft.FileSystem.OSDirectoryManager.GetRootPath(root));
filePath = Path.Combine(rootPath, path, fileName);
if (!File.Exists(filePath))
{
throw new Exception(String.Format(Resources.YZStrings.Aspx_Upload_FileIDNotFount, fileName));
}
FileInfo fileInfo = new FileInfo(filePath);
fileSize = fileInfo.Length;
fileExt = fileInfo.Extension;
}
else
{
string fileId = request.GetString("fileid");
AttachmentInfo attachment;
using (IYZDbProvider provider = YZDbProviderManager.DefaultProvider)
{
using (IDbConnection cn = provider.OpenConnection())
{
attachment = AttachmentManager.GetAttachmentInfo(provider, cn, fileId);
}
}
fileName = attachment.Name;
fileExt = attachment.Ext;
fileSize = attachment.Size;
filePath = AttachmentInfo.FileIDToPath(fileId, AttachmentManager.AttachmentRootPath);
if (!File.Exists(filePath))
{
throw new Exception(String.Format(Resources.YZStrings.Aspx_Upload_FileIDNotFount, fileId));
}
}
string fileExtNoDot = fileExt == null ? "" : fileExt.TrimStart('.');
//有请求格式并且请求格式非元文件格式
if (supports.Count != 0 && !supports.Contains(fileExtNoDot))
{
//发现已有转换文件
string existFile = null;
foreach (string format in supports)
{
string outputFile = Path.Combine(Path.GetDirectoryName(filePath), String.Format("{0}.{1}", Path.GetFileNameWithoutExtension(filePath), format));
if (File.Exists(outputFile))
{
existFile = outputFile;
break;
}
}
if (!String.IsNullOrEmpty(existFile))
{
filePath = existFile;
}
else
{
//转换文件
string targetExt = supports[0];
DocumentFormat targetFormat = (DocumentFormat)Enum.Parse(typeof(DocumentFormat), targetExt, true);
string outputFile = Path.Combine(Path.GetDirectoryName(filePath), String.Format("{0}.{1}", Path.GetFileNameWithoutExtension(filePath), targetExt));
DocumentFormat srcFormat = (DocumentFormat)Enum.Parse(typeof(DocumentFormat), fileExtNoDot, true);
if (srcFormat == DocumentFormat.Pdf && targetFormat == DocumentFormat.Html)
{
YZSoft.Web.File.FileConvert.Pdf2Html(filePath);
filePath = outputFile;
}
else
{
DocumentConverterResult result = DocumentConverter.Convert(
new GleamTech.IO.BackSlashPath(filePath),
new InputOptions(srcFormat),
new GleamTech.IO.BackSlashPath(outputFile),
targetFormat
);
filePath = result.OutputFiles[0];
}
}
fileExt = Path.GetExtension(filePath);
}
string range = context.Request.Headers["Range"];
string contentType = YZMimeMapping.GetMimeType(fileExt);
context.Response.AppendHeader("Content-Type", contentType);
context.Response.AppendHeader("Accept-Ranges", "bytes");
if (range == null)
{
FileInfo fileinfo = new FileInfo(filePath);
//全新下载
context.Response.AppendHeader("Content-Length", fileinfo.Length.ToString());
//context.Response.CacheControl = HttpCacheability.Public.ToString();
//context.Response.Cache.AppendCacheExtension("max-age=" + 365 * 24 * 60 * 60);
//context.Response.Cache.SetExpires(DateTime.Now.AddYears(1));
//context.Response.AppendHeader("ETag", "Never_Modify");
//context.Response.Cache.SetETag("Never_Modify");
//context.Response.Cache.SetLastModified(DateTime.Now.AddMinutes(-1));
context.Response.TransmitFile(filePath);
}
else
{
//断点续传以及多线程下载支持
string[] file_range = range.Substring(6).Split(new char[1] {
'-'
});
context.Response.Status = "206 Partial Content";
context.Response.AppendHeader("Content-Range", "bytes " + file_range[0] + "-" + file_range[1] + "/" + fileSize.ToString());
context.Response.AppendHeader("Content-Length", (Int32.Parse(file_range[1]) - Int32.Parse(file_range[0]) + 1).ToString());
context.Response.TransmitFile(filePath, long.Parse(file_range[0]), (long)(Int32.Parse(file_range[1]) - Int32.Parse(file_range[0]) + 1));
}
}
public object GetImageSize(HttpContext context)
{
YZRequest request = new YZRequest(context);
string fileid = request.GetString("fileid");
Size size;
AttachmentInfo attachment;
using (IYZDbProvider provider = YZDbProviderManager.DefaultProvider)
{
using (IDbConnection cn = provider.OpenConnection())
{
attachment = AttachmentManager.TryGetAttachmentInfo(provider, cn, fileid);
}
}
if (attachment == null)
{
size = new Size(55, 47);
}
else
{
if (attachment.LParam1 != -1)
{
size = new Size(attachment.LParam1 / 10000, attachment.LParam1 % 10000);
}
else
{
string filePath = this.GetImageFile(attachment, ScaleMode.None, 0, 0, null);
if (!String.IsNullOrEmpty(filePath))
{
size = this.GetImageSize(filePath);
attachment.LParam1 = size.Width * 10000 + size.Height;
using (IYZDbProvider provider = YZDbProviderManager.DefaultProvider)
{
using (IDbConnection cn = provider.OpenConnection())
{
AttachmentManager.Update(provider, cn, attachment);
}
}
}
else
{
if (YZMimeMapping.isVedioFile(attachment.Ext))
{
size = new Size(55, 47);
}
else
{
size = new Size(55, 47);
}
}
}
}
return(new {
width = size.Width,
height = size.Height
});
}
