110,534
社区成员
发帖
与我相关
我的任务
分享
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
string fileContentType = FileUpload1.PostedFile.ContentType;
if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/pjpeg")
{
string name = FileUpload1.PostedFile.FileName; // 客户端文件路径
FileInfo file = new FileInfo(name);
string fileName = file.Name; // 文件名称
string fileName_s = "s_" + file.Name; // 缩略图文件名称
string fileName_sy = "sy_" + file.Name; // 水印图文件名称(文字)
string fileName_syp = "syp_" + file.Name; // 水印图文件名称(图片)
DateTime dt = DateTime.Today;
string filePath = string.Format("../file/{0}/{1}/{2}/",
dt.Year.ToString(), dt.Month.ToString(),dt.Day.ToString());
string webFilePath = Server.MapPath(filePath + fileName); // 服务器端文件路径
string webFilePath_s = Server.MapPath(filePath + fileName_s); // 服务器端缩略图路径
string webFilePath_sy = Server.MapPath(filePath + fileName_sy); // 服务器端带水印图路径(文字)
string webFilePath_syp = Server.MapPath(filePath + fileName_syp); // 服务器端带水印图路径(图片)
string webFilePath_sypf = Server.MapPath("file/shuiyin.jpg"); // 服务器端水印图路径(图片)
if (!Directory.Exists(Server.MapPath(filePath)))
{
Directory.CreateDirectory(Server.MapPath(filePath));
}
if (!File.Exists(webFilePath))
{
try
{
FileUpload1.SaveAs(webFilePath); // 使用 SaveAs 方法保存文件
//AddShuiYinWord(webFilePath, webFilePath_sy);
//AddShuiYinPic(webFilePath, webFilePath_syp, webFilePath_sypf);
MakeThumbnail(webFilePath, webFilePath_s, 130, 130, "Cut"); // 生成缩略图方法
string a = "提示:文件“" + fileName + "”成功上传,并生成“" + fileName_s + "”缩略图,文件类型为:" + FileUpload1.PostedFile.ContentType + ",文件大小为:" + FileUpload1.PostedFile.ContentLength + "B";
Response.Write("<script language=javascript>alert('" + a + "')</script>");
Image1.ImageUrl = filePath + fileName;
rblImgUrl.Items.Add(new ListItem(
"<img src=\"" + filePath + fileName_s + "\" />",
filePath + fileName));
}
catch (Exception ex)
{
string a = "提示:文件上传失败,失败原因:" + ex.Message;
Response.Write("<script language=javascript>alert('" + a + "')</script>");
}
}
else
{
string a = "提示:文件已经存在,请重命名后上传";
Response.Write("<script language=javascript>alert('" + a + "')</script>");
}
}
else
{
string a = "提示:文件类型不符";
Response.Write("<script language=javascript>alert('" + a + "')</script>");
}
}
}
public static void MakeThumbnail(string originalImagePath, string thumbnailPath, int width, int height, string mode)
{
System.Drawing.Image originalImage = System.Drawing.Image.FromFile(originalImagePath);
int towidth = width;
int toheight = height;
int x = 0;
int y = 0;
int ow = originalImage.Width;
int oh = originalImage.Height;
switch (mode)
{
case "HW"://指定高宽缩放(可能变形)
break;
case "W"://指定宽,高按比例
toheight = originalImage.Height * width / originalImage.Width;
break;
case "H"://指定高,宽按比例
towidth = originalImage.Width * height / originalImage.Height;
break;
case "Cut"://指定高宽裁减(不变形)
if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
{
oh = originalImage.Height;
ow = originalImage.Height * towidth / toheight;
y = 0;
x = (originalImage.Width - ow) / 2;
}
else
{
ow = originalImage.Width;
oh = originalImage.Width * height / towidth;
x = 0;
y = (originalImage.Height - oh) / 2;
}
break;
default:
break;
}
//新建一个bmp图片
System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);
//新建一个画板
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//清空画布并以透明背景色填充
g.Clear(System.Drawing.Color.Transparent);
//在指定位置并且按指定大小绘制原图片的指定部分
g.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, towidth, toheight),
new System.Drawing.Rectangle(x, y, ow, oh),
System.Drawing.GraphicsUnit.Pixel);
try
{
//以jpg格式保存缩略图
bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
}
catch (System.Exception e)
{
throw e;
}
finally
{
originalImage.Dispose();
bitmap.Dispose();
g.Dispose();
}
}
描述:一个应用程序错误出现在服务器上。目前常用的错误设置为该应用程序的细节,防止错误被视为远程(因为安全原因)。它可以,但是被浏览器运行在当地的服务器。
细节的细节:使这个特定的错误信息被试在遥远的机器,请创建一个< customErrors >内的一些“标签”的配置文件中位于根目录的当前的网络应用程序。这个< customErrors >标记应“模式”属性设置为“关”。