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);
}
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);
}
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
});
}