//上传
protected void BtnUpLoad_Click(object sender, EventArgs e)
{
if (FileUploadFiles.HasFile)
{
ArrayList arrylist = new ArrayList();
arrylist.Add("jpg");
arrylist.Add("jpeg");
arrylist.Add("png");
arrylist.Add("ico");
arrylist.Add("gif");
arrylist.Add("bmp");
arrylist.Add("rar");
arrylist.Add("txt");
arrylist.Add("doc");
arrylist.Add("txt");
arrylist.Add("zip");
arrylist.Add("swf");
arrylist.Add("mp3");
ArrayList alType = new ArrayList();
alType.Add("image/pjpeg");
alType.Add("image/gif");
alType.Add("image/bmp");
alType.Add("image/png");
alType.Add("image/x-icon");
alType.Add("image/jpeg");
alType.Add("image/x-png");
alType.Add("application/octet-stream");
alType.Add("application/msword");
alType.Add("text/plain");
alType.Add("application/x-shockwave-flash");
alType.Add("audio/mpeg");
string fileName = FileUploadFiles.FileName;
string[] houzhuiList = fileName.Split(new char[] { '.' });
string houzhui = houzhuiList[houzhuiList.Length - 1].ToLower();
if (!string.IsNullOrEmpty(fileSuffix))
{
List <string> suffix = new List <string>();
suffix.AddRange(fileSuffix.Split(','));
if (!suffix.Contains(houzhui))
{
LbTishi.Text = "上传文件类型错误，请上传" + fileSuffix + "类型文件";
return;
}
else
{
LbTishi.Text = "";
}
}
if (arrylist.Contains(houzhui))
{
if (alType.Contains(FileUploadFiles.PostedFile.ContentType))
{
if (FileUploadFiles.PostedFile.ContentLength / (1024 * 1024) >= 20)
{
LbTishi.Text = "上传文件过大";
}
else
{
string strRand = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString(); //日期
Random rand = new Random();
strRand += rand.Next(10000000, 99999999); //随机数
string ImgName = strRand + "." + houzhui; //文件名称
if (directoryUrl == null || directoryUrl == string.Empty)
{
directoryUrl = "Userfiles/";
}
//保存到数据库的路径
string strSqlUrl = directoryUrl + ImgName;
//上传路径
string strImgUrl = Server.MapPath("~/" + directoryUrl) + ImgName;
//核查目录，如果不存在就创建该目录
if (!Directory.Exists(Server.MapPath("~/" + directoryUrl)))
{
Directory.CreateDirectory(Server.MapPath("~/" + directoryUrl));
}
FileUploadFiles.SaveAs(strImgUrl);//上传
#region 水印
if (isWaterMark == true)
{
string fileUrl = HttpContext.Current.Server.MapPath("~/App_Data/WebSet/WebSet.xml");
YK.Model.WebSet webset = YK.Common.MyXmlSerializer <YK.Model.WebSet> .Get(fileUrl);
switch (webset.WaterMarkType)
{
case -1:
break;
case 0:
YK.Common.WaterMarkHelper.TxtWaterMark(strImgUrl);
break;
case 1:
YK.Common.WaterMarkHelper.PicWaterMark(strImgUrl);
break;
}
}
#endregion
TbFileUrl.Visible = true;
ImageShow.Visible = true;
FileUploadFiles.Visible = false;
BtnUpLoad.Visible = false;
BtnDelete.Visible = true;
//TbFileUrl.Enabled = false;
TbFileUrl.Text = strSqlUrl;
ImageShow.Src = "../../" + strSqlUrl;
url = strSqlUrl;
}
}
}
}
}
/// <summary>
/// 给图片上水印
/// </summary>
/// <param name="path">加水印图片的物理路径</param>
public static void PicWaterMark(string filePath)
{
string fileUrl = HttpContext.Current.Server.MapPath("~/App_Data/WebSet/WebSet.xml");
YK.Model.WebSet webset = MyXmlSerializer <YK.Model.WebSet> .Get(fileUrl);
string waterFile = HttpContext.Current.Server.MapPath("~/" + webset.WaterMarkPicUrl);
string ModifyImagePath = filePath; //修改的图像路径
int lucencyPercent = 25; //透明度
Image modifyImage = null;
Image drawedImage = null;
Graphics g = null;
//建立图形对象
modifyImage = Image.FromFile(ModifyImagePath, true);
drawedImage = Image.FromFile(waterFile, true);
g = Graphics.FromImage(modifyImage);
//设置颜色矩阵
float[][] matrixItems =
{
new float[] { 1, 0, 0, 0, 0 },
new float[] { 0, 1, 0, 0, 0 },
new float[] { 0, 0, 1, 0, 0 },
new float[] { 0, 0, 0, (float)lucencyPercent / 100f, 0 },
new float[] { 0, 0, 0, 0, 1 }
};
//获取要绘制图形坐标
int x = 0;
int y = 0;
//水印图片的宽和高
int width = drawedImage.Width;
int height = drawedImage.Height;
switch (webset.WaterMarkHorizontal)
{
case "left":
x = 0;
break;
case "center":
x = (modifyImage.Width - width) / 2;
break;
case "right":
x = modifyImage.Width - width;
break;
}
switch (webset.WaterMarkVertical)
{
case "top":
y = 0 + 10; //向下移动10像素好看些
break;
case "middle":
y = (modifyImage.Height - height) / 2;
break;
case "bottom":
y = modifyImage.Height - height;
break;
}
ColorMatrix colorMatrix = new ColorMatrix(matrixItems);
ImageAttributes imgAttr = new ImageAttributes();
imgAttr.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
//绘制阴影图像
g.DrawImage(drawedImage,
new Rectangle(x, y, drawedImage.Width, drawedImage.Height),
0, 0, //水印图片的坐标值开始，如0,0就是从水印图片的0,0坐标开始画图
drawedImage.Width,
drawedImage.Height,
GraphicsUnit.Pixel,
imgAttr);
//保存文件
string[] allowImageType = { ".jpg", ".gif", ".png", ".bmp", ".tiff", ".wmf", ".ico" };
FileInfo fi = new FileInfo(ModifyImagePath);
ImageFormat imageType = ImageFormat.Gif;
switch (fi.Extension.ToLower())
{
case ".jpg": imageType = ImageFormat.Jpeg; break;
case ".gif": imageType = ImageFormat.Gif; break;
case ".png": imageType = ImageFormat.Png; break;
case ".bmp": imageType = ImageFormat.Bmp; break;
case ".tif": imageType = ImageFormat.Tiff; break;
case ".wmf": imageType = ImageFormat.Wmf; break;
case ".ico": imageType = ImageFormat.Icon; break;
default: break;
}
MemoryStream ms = new MemoryStream();
modifyImage.Save(ms, imageType);
byte[] imgData = ms.ToArray();
drawedImage.Dispose();
modifyImage.Dispose();
g.Dispose();
FileStream fs = null;
File.Delete(ModifyImagePath);
fs = new FileStream(ModifyImagePath, FileMode.Create, FileAccess.Write);
if (fs != null)
{
fs.Write(imgData, 0, imgData.Length);
fs.Close();
}
}
