/// <summary>
/// 附件上传
/// </summary>
private void Upload()
{
byte attribute = (byte)Utils.GetFormInt("hidden_attr"); //附件属性
string hasWaterMark = Utils.GetFormString("chHasWaterMark"); //原图是否水印
string hasAbbrImage1 = Utils.GetFormString("chHasAbbrImage1"); //是否生成缩略图
string hasWaterMark1 = Utils.GetFormString("chHasWaterMark1"); //缩略图是否水印
int abbrImageWidth1 = Utils.GetFormInt("abbrImageWidth1"); //缩略图宽
int abbrImageHeight1 = Utils.GetFormInt("abbrImageHeight1"); //缩略图高
string filepathshort = sysConfig.Attachments.Path.Replace("\\\\", "\\") + "\\"
+ DateTime.Now.ToString(sysConfig.Attachments.Directory == "" ? "yyyyMM" : sysConfig.Attachments.Directory) + "\\";
string filepath = Utils.GetRootPath() + filepathshort; //附件存放路径
if (!Directory.Exists(filepath))
{
Directory.CreateDirectory(filepath);
}
string errorMsg = string.Empty; //错误信息
int returnVal = 1; //返回值。1：成功，202：无效上传文件，203：你没有权限，204：未知错误
string returnImgName = string.Empty; //返回图片名称
string abbName = string.Empty; //缩略图名称
HttpFileCollection uploadedFiles = Request.Files;
for (int i = 0; i < uploadedFiles.Count; i++)
{
string fileDisplayName = DTCMS.Common.Utils.GetFormString("File" + (i + 1) + "Name"); //附件名称
string fileInfo = DTCMS.Common.Utils.GetFormString("File" + (i + 1) + "Info"); //附件描述
HttpPostedFile userPostedFile = uploadedFiles[i];
string fileName = System.IO.Path.GetFileName(userPostedFile.FileName);
if (fileName != "")
{
#region 验证附件格式是否正确
if (!AttachmentFormat(fileName, attribute))
{
if (errorMsg != string.Empty)
{
errorMsg += ",";
}
errorMsg += fileName;
continue;
}
#endregion 验证附件格式是否正确
try
{
int fileContentLen = userPostedFile.ContentLength;
if (fileContentLen > 0)
{
#region 附件上传
returnImgName = DateTime.Now.ToString("yyyyMMddHHmmss") + DateTime.Now.Millisecond.ToString() + fileName.Substring(fileName.LastIndexOf('.')).ToLower();
abbName = returnImgName.Substring(0, returnImgName.LastIndexOf('.')) + "_abbr" + fileName.Substring(fileName.LastIndexOf('.')).ToLower();
userPostedFile.SaveAs(filepath + returnImgName); //附件上传
#endregion 附件上传
#region 是否图片
if (attribute == (int)EAttachmentAttribute.Photo)
{
if (hasAbbrImage1.Trim().ToLower() == "true")
{
#region 生成缩略图
EWaterImageType mode = EWaterImageType.W;
if (abbrImageHeight1 > 0 && abbrImageWidth1 <= 0)
{
mode = EWaterImageType.H;
}
else if (abbrImageWidth1 > 0 && abbrImageHeight1 <= 0)
{
mode = EWaterImageType.W;
}
else if ((abbrImageHeight1 > 0) && (abbrImageWidth1 > 0))
{
mode = EWaterImageType.CUT;
}
else
{
mode = EWaterImageType.NO;
}
if (mode == EWaterImageType.NO)
{
abbrImageWidth1 = 500;
abbrImageHeight1 = 0;
mode = EWaterImageType.W;
}
string abbPath = filepath + abbName;
Common.WaterImage.MakeThumbnail(filepath + returnImgName, abbPath
, abbrImageWidth1, abbrImageHeight1, mode);
#endregion 生成缩略图
#region 缩略图水印
if (hasWaterMark1.Trim().ToLower() == "true")
{
WaterImage(abbPath, abbPath);
}
#endregion 缩略图水印
}
#region 原图水印
if (attribute == (int)EAttachmentAttribute.Photo)
{
if (hasWaterMark.Trim().ToLower() == "true")
{
WaterImage(filepath + returnImgName, filepath + returnImgName);
}
}
#endregion 原图水印
}
#endregion 是否图片
#region 保存数据
AttachMent modAttachMent = new AttachMent();
modAttachMent.Attribute = attribute;
modAttachMent.DisplayName = fileDisplayName;
modAttachMent.AttachMentPath = "/" + filepathshort.Replace("\\", "/") + returnImgName;
modAttachMent.AttachMentSize = fileContentLen;
if (hasAbbrImage1.Trim().ToLower() == "true")
{
modAttachMent.AbbrPhotoPath = "/" + filepathshort.Replace("\\", "/") + abbName;
}
else
{
modAttachMent.AbbrPhotoPath = "";
}
modAttachMent.PubLisher = "";
modAttachMent.AddDate = DateTime.Now;
modAttachMent.PhotoDescription = fileInfo;
bllAttachment.Add(modAttachMent);
#endregion 保存数据
}
else
{
if (errorMsg != string.Empty)
{
errorMsg += ",";
}
errorMsg += fileName;
}
}
catch
{
returnVal = 204; //未知错误
errorMsg = "";
}
}
if (errorMsg != "")
{
returnVal = 202; //无效上传文件
}
}
string returnImgPath = "";
if (hasAbbrImage1.Trim().ToLower() == "true")
{
if (abbName != string.Empty && abbName != null)
{
returnImgPath = "/" + filepathshort.Replace("\\", "/") + abbName;
}
}
else
{
if (returnImgName != string.Empty && returnImgName != null)
{
returnImgPath = "/" + filepathshort.Replace("\\", "/") + returnImgName;
}
}
Response.Redirect("~/admin/attachment/emptyPage.html?returnVal=" + returnVal + "&errorMsg=" + Server.UrlEncode(errorMsg) + "&returnImgPath=" + Server.UrlEncode(returnImgPath));
}
/// <summary>
/// 生成缩略图
/// </summary>
/// <param name="originalImagePath">源图路径（物理路径）</param>
/// <param name="thumbnailPath">缩略图路径（物理路径）</param>
/// <param name="width">缩略图宽度</param>
/// <param name="height">缩略图高度</param>
/// <param name="mode">生成缩略图的方式</param>
public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, EWaterImageType mode)
{
System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath);
int imgWidth = width <= 0?originalImage.Width:width;
imgWidth = width > originalImage.Width ? originalImage.Width : width;
int imgHeight = height < 0?originalImage.Height:height;
imgHeight = height > originalImage.Height ? originalImage.Height : height;
int x = 0;
int y = 0;
int ow = originalImage.Width;
int oh = originalImage.Height;
switch (mode)
{
case EWaterImageType.HW: //指定高宽缩放（可能变形）
break;
case EWaterImageType.W: //指定宽，高按比例
imgHeight = originalImage.Height * width / originalImage.Width;
break;
case EWaterImageType.H: //指定高，宽按比例
imgWidth = originalImage.Width * height / originalImage.Height;
break;
case EWaterImageType.CUT: //指定高宽裁减（不变形）
if ((double)originalImage.Width / (double)originalImage.Height > (double)imgWidth / (double)imgHeight)
{
oh = originalImage.Height;
ow = originalImage.Height * imgWidth / imgHeight;
y = 0;
x = (originalImage.Width - ow) / 2;
}
else
{
ow = originalImage.Width;
oh = originalImage.Width * imgHeight / imgWidth;
x = 0;
y = (originalImage.Height - oh) / 2;
}
break;
default:
break;
}
Dictionary <string, string> dicImg = SetImgType();//缩略图图片格式
System.Drawing.Bitmap bitMap = new System.Drawing.Bitmap(imgWidth, imgHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(bitMap); //新建一个画板
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic; //设置高质量查值法
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //设置高质量，低速度呈现平滑程度
graphics.Clear(System.Drawing.Color.Transparent); //清空画布并以透明背景色填充
//在指定位置并且按指定大小绘制原图片的指定部分
graphics.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, imgWidth, imgHeight), new System.Drawing.Rectangle(x, y, ow, oh),
System.Drawing.GraphicsUnit.Pixel);
//设置 原图片 对象的 EncoderParameters 对象
System.Drawing.Imaging.EncoderParameters parms = new System.Drawing.Imaging.EncoderParameters(1);
parms.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, ((long)100));
string extension = Path.GetExtension(originalImagePath).ToLower();
System.Drawing.Imaging.ImageCodecInfo imgCodeInfo = GetImageCodeInfo(dicImg[extension].ToString());
string directoryPath = Path.GetDirectoryName(thumbnailPath);
//看是否存在目录 不存在则创建目录
if (!System.IO.File.Exists(directoryPath))
{
System.IO.Directory.CreateDirectory(directoryPath);
}
try
{
bitMap.Save(thumbnailPath, imgCodeInfo, parms);
}
catch
{
}
finally
{
originalImage.Dispose();
bitMap.Dispose();
graphics.Dispose();
parms.Dispose();
}
}
