ImageUpload
using System;
using System.IO;
using System.Web;
using System.Web.UI.HtmlControls;
using System.Drawing;
/// <summary>
/// 文件类型
/// </summary>
public enum FileExtension
{
JPG = 255216,
GIF = 7173,
BMP = 6677,
PNG = 13780,
RAR = 8297,
jpg = 255216,
exe = 7790,
xml = 6063,
html = 6033,
aspx = 239187,
cs = 117115,
js = 119105,
txt = 210187,
sql = 255254
}
/// <summary>
/// 图片检测类
/// </summary>
public static class FileValidation
{
#region 上传图片检测类
/// <summary>
/// 是否允许
/// </summary>
public static bool IsAllowedExtension(HttpPostedFile oFile, FileExtension[] fileEx)
{
int fileLen = oFile.ContentLength;
byte[] imgArray = new byte[fileLen];
oFile.InputStream.Read(imgArray, 0, fileLen);
MemoryStream ms = new MemoryStream(imgArray);
System.IO.BinaryReader br = new System.IO.BinaryReader(ms);
string fileclass = "";
byte buffer;
try
{
buffer = br.ReadByte();
fileclass = buffer.ToString();
buffer = br.ReadByte();
fileclass += buffer.ToString();
}
catch { }
br.Close();
ms.Close();
foreach (FileExtension fe in fileEx)
{
if (Int32.Parse(fileclass) == (int)fe) return true;
}
return false;
}
/// <summary>
/// 上传前的图片是否可靠
/// </summary>
public static bool IsSecureUploadPhoto(HttpPostedFile oFile)
{
bool isPhoto = false;
string fileExtension = System.IO.Path.GetExtension(oFile.FileName).ToLower();
string[] allowedExtensions = { ".gif", ".png", ".jpeg", ".jpg", ".bmp" };
for (int i = 0; i < allowedExtensions.Length; i++)
{
if (fileExtension == allowedExtensions[i])
{
isPhoto = true;
break;
}
}
if (!isPhoto)
{
return true;
}
FileExtension[] fe = {FileExtension.BMP,FileExtension.GIF,FileExtension.JPG,FileExtension.PNG};
if (IsAllowedExtension(oFile, fe))
return true;
else
return false;
}
/// <summary>
/// 上传后的图片是否安全
/// </summary>
/// <param name="photoFile">物理地址</param>
public static bool IsSecureUpfilePhoto(string photoFile)
{
bool isPhoto = false;
string Img = "Yes";
string fileExtension = System.IO.Path.GetExtension(photoFile).ToLower();
string[] allowedExtensions = { ".gif", ".png", ".jpeg", ".jpg", ".bmp" };
for (int i = 0; i < allowedExtensions.Length; i++)
{
if (fileExtension == allowedExtensions[i])
{
isPhoto = true;
break;
}
}
if (!isPhoto)
{
return true;
}
StreamReader sr = new StreamReader(photoFile, System.Text.Encoding.Default);
string strContent = sr.ReadToEnd();
sr.Close();
string str = "request|<script|.getfolder|.createfolder|.deletefolder|.createdirectory|.deletedirectory|.saveas|wscript.shell|script.encode|server.|.createobject|execute|activexobject|language=";
foreach (string s in str.Split('|'))
{
if (strContent.ToLower().IndexOf(s) != -1)
{
File.Delete(photoFile);
Img = "No";
break;
}
}
return (Img == "Yes");
}
#endregion
}
/// <summary>
/// 图片上传类
/// </summary>
//----------------调用-------------------
//imageUpload iu = new imageUpload();
//iu.AddText = "";
//iu.CopyIamgePath = "";
//iu.DrawString_x = ;
//iu.DrawString_y = ;
//iu.DrawStyle = ;
//iu.Font = "";
//iu.FontSize = ;
//iu.FormFile = File1;
//iu.IsCreateImg =;
//iu.IsDraw = ;
//iu.OutFileName = "";
//iu.OutThumbFileName = "";
//iu.SavePath = @"~/image/";
//iu.SaveType = ;
//iu.sHeight = ;
//iu.sWidth = ;
//iu.Upload();
//--------------------------------------
public class ImageUpload
{
#region 私有成员
private int _Error = 0;//返回上传状态。
private int _MaxSize = 1024 * 1024;//最大单个上传文件 (默认)
private string _FileType = "jpg;gif;bmp;png";//所支持的上传类型用"/"隔开
private string _SavePath = System.Web.HttpContext.Current.Server.MapPath(".") + "\\";//保存文件的实际路径
private int _SaveType = 0;//上传文件的类型，0代表自动生成文件名
private HtmlInputFile _FormFile;//上传控件。
private string _InFileName = "";//非自动生成文件名设置。
private string _OutFileName = "";//输出文件名。
private bool _IsCreateImg = true;//是否生成缩略图。
private bool _Iss = false;//是否有缩略图生成.
private int _Height = 0;//获取上传图片的高度
private int _Width = 0;//获取上传图片的宽度
private int _sHeight = 120;//设置生成缩略图的高度
private int _sWidth = 120;//设置生成缩略图的宽度
private bool _IsDraw = false;//设置是否加水印
private int _DrawStyle = 0;//设置加水印的方式０：文字水印模式，１：图片水印模式,2:不加
private int _DrawString_x = 10;//绘制文本的Ｘ坐标（左上角）
private int _DrawString_y = 10;//绘制文本的Ｙ坐标（左上角）
private string _AddText = "GlobalNatureCrafts";//设置水印内容
private string _Font = "宋体";//设置水印字体
private int _FontSize = 12;//设置水印字大小
private int _FileSize = 0;//获取已经上传文件的大小
private string _CopyIamgePath = System.Web.HttpContext.Current.Server.MapPath(".") + "/images/5dm_new.jpg";//图片水印模式下的覆盖图片的实际地址
#endregion
#region 公有属性
/// <summary>
/// Error返回值
/// 1、没有上传的文件
/// 2、类型不允许
/// 3、大小超限
/// 4、未知错误
/// 0、上传成功。
/// </summary>
public int Error
{
get { return _Error; }
}
/// <summary>
/// 最大单个上传文件
/// </summary>
public int MaxSize
{
set { _MaxSize = value; }
}
/// <summary>
/// 所支持的上传类型用";"隔开
/// </summary>
public string FileType
{
set { _FileType = value; }
}
/// <summary>
/// 保存文件的实际路径
/// </summary>
public string SavePath
{
set { _SavePath = System.Web.HttpContext.Current.Server.MapPath(value); }
get { return _SavePath; }
}
/// <summary>
/// 上传文件的类型，0代表自动生成文件名
/// </summary>
public int SaveType
{
set { _SaveType = value; }
}
/// <summary>
/// 上传控件
/// </summary>
public HtmlInputFile FormFile
{
set { _FormFile = value; }
}
/// <summary>
/// 非自动生成文件名设置。
/// </summary>
public string InFileName
{
set { _InFileName = value; }
}
/// <summary>
/// 输出文件名
/// </summary>
public string OutFileName
{
get { return _OutFileName; }
set { _OutFileName = value; }
}
/// <summary>
/// 输出的缩略图文件名
/// </summary>
public string OutThumbFileName
{
get;
set;
}
/// <summary>
/// 是否有缩略图生成.
/// </summary>
public bool Iss
{
get { return _Iss; }
}
/// <summary>
/// 获取上传图片的宽度
/// </summary>
public int Width
{
get { return _Width; }
}
/// <summary>
/// 获取上传图片的高度
/// </summary>
public int Height
{
get { return _Height; }
}
/// <summary>
/// 设置缩略图的宽度
/// </summary>
public int sWidth
{
get { return _sWidth; }
set { _sWidth = value; }
}
/// <summary>
/// 设置缩略图的高度
/// </summary>
public int sHeight
{
get { return _sHeight; }
set { _sHeight = value; }
}
/// <summary>
/// 是否生成缩略图
/// </summary>
public bool IsCreateImg
{
get { return _IsCreateImg; }
set { _IsCreateImg = value; }
}
/// <summary>
/// 是否加水印
/// </summary>
public bool IsDraw
{
get { return _IsDraw; }
set { _IsDraw = value; }
}
/// <summary>
/// 设置加水印的方式
/// 0:文字水印模式
/// 1:图片水印模式
/// 2:不加
/// </summary>
public int DrawStyle
{
get { return _DrawStyle; }
set { _DrawStyle = value; }
}
/// <summary>
/// 绘制文本的Ｘ坐标（左上角）
/// </summary>
public int DrawString_x
{
get { return _DrawString_x; }
set { _DrawString_x = value; }
}
/// <summary>
/// 绘制文本的Ｙ坐标（左上角）
/// </summary>
public int DrawString_y
{
get { return _DrawString_y; }
set { _DrawString_y = value; }
}
/// <summary>
/// 设置文字水印内容
/// </summary>
public string AddText
{
get { return _AddText; }
set { _AddText = value; }
}
/// <summary>
/// 设置文字水印字体
/// </summary>
public string Font
{
get { return _Font; }
set { _Font = value; }
}
/// <summary>
/// 设置文字水印字的大小
/// </summary>
public int FontSize
{
get { return _FontSize; }
set { _FontSize = value; }
}
/// <summary>
/// 文件大小
/// </summary>
public int FileSize
{
get { return _FileSize; }
set { _FileSize = value; }
}
/// <summary>
/// 图片水印模式下的覆盖图片的实际地址
/// </summary>
public string CopyIamgePath
{
set { _CopyIamgePath = System.Web.HttpContext.Current.Server.MapPath(value); }
}
#endregion
#region 私有方法
/// <summary>
/// 获取文件的后缀名
/// </summary>
private string GetExt(string path)
{
return Path.GetExtension(path);
}
/// <summary>
/// 获取输出文件的文件名
/// </summary>
private string FileName(string Ext)
{
if (_SaveType == 0 || _InFileName.Trim() == "")
return DateTime.Now.ToString("yyyyMMddHHmmssfff") + Ext;
else
return _InFileName;
}
/// <summary>
/// 检查上传的文件的类型，是否允许上传。
/// </summary>
private bool IsUpload(string Ext)
{
Ext = Ext.Replace(".", "");
bool b = false;
string[] arrFileType = _FileType.Split(';');
foreach (string str in arrFileType)
{
if (str.ToLower() == Ext.ToLower())
{
b = true;
break;
}
}
return b;
}
#endregion
#region 上传图片
public void Upload()
{
HttpPostedFile hpFile = _FormFile.PostedFile;
if (hpFile == null || hpFile.FileName.Trim() == "")
{
_Error = 1;
return;
}
string Ext = GetExt(hpFile.FileName);
if (!IsUpload(Ext))
{
_Error = 2;
return;
}
int iLen = hpFile.ContentLength;
if (iLen > _MaxSize)
{
_Error = 3;
return;
}
try
{
if (!Directory.Exists(_SavePath)) Directory.CreateDirectory(_SavePath);
byte[] bData = new byte[iLen];
hpFile.InputStream.Read(bData, 0, iLen);
string FName;
FName = FileName(Ext);
string TempFile = "";
if (_IsDraw)
{
TempFile = FName.Split('.').GetValue(0).ToString() + "_temp." + FName.Split('.').GetValue(1).ToString();
}
else
{
TempFile = FName;
}
FileStream newFile = new FileStream(_SavePath + TempFile, FileMode.Create);
newFile.Write(bData, 0, bData.Length);
newFile.Flush();
int _FileSizeTemp = hpFile.ContentLength;
string ImageFilePath = _SavePath + FName;
if (_IsDraw)
{
if (_DrawStyle == 0)
{
System.Drawing.Image Img1 = System.Drawing.Image.FromStream(newFile);
Graphics g = Graphics.FromImage(Img1);
g.DrawImage(Img1, 100, 100, Img1.Width, Img1.Height);
Font f = new Font(_Font, _FontSize);
Brush b = new SolidBrush(Color.Red);
string addtext = _AddText;
g.DrawString(addtext, f, b, _DrawString_x, _DrawString_y);
g.Dispose();
Img1.Save(ImageFilePath);
Img1.Dispose();
}
else
{
System.Drawing.Image image = System.Drawing.Image.FromStream(newFile);
System.Drawing.Image copyImage = System.Drawing.Image.FromFile(_CopyIamgePath);
Graphics g = Graphics.FromImage(image);
g.DrawImage(copyImage, new Rectangle(image.Width - copyImage.Width - 5, image.Height - copyImage.Height - 5, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel);
g.Dispose();
image.Save(ImageFilePath);
image.Dispose();
}
}
//获取图片的高度和宽度
System.Drawing.Image Img = System.Drawing.Image.FromStream(newFile);
_Width = Img.Width;
_Height = Img.Height;
//生成缩略图部分
if (_IsCreateImg)
{
#region 缩略图大小只设置了最大范围，并不是实际大小
float realbili = (float)_Width / (float)_Height;
float wishbili = (float)_sWidth / (float)_sHeight;
//实际图比缩略图最大尺寸更宽矮，以宽为准
if (realbili > wishbili)
{
_sHeight = (int)((float)_sWidth / realbili);
}
//实际图比缩略图最大尺寸更高长，以高为准
else
{
_sWidth = (int)((float)_sHeight * realbili);
}
#endregion
this.OutThumbFileName = FName.Split('.').GetValue(0).ToString() + "_s." + FName.Split('.').GetValue(1).ToString();
string ImgFilePath = _SavePath + this.OutThumbFileName;
System.Drawing.Image newImg = Img.GetThumbnailImage(_sWidth, _sHeight, null, System.IntPtr.Zero);
newImg.Save(ImgFilePath);
newImg.Dispose();
_Iss = true;
}
if (_IsDraw)
{
if (File.Exists(_SavePath + FName.Split('.').GetValue(0).ToString() + "_temp." + FName.Split('.').GetValue(1).ToString()))
{
newFile.Dispose();
File.Delete(_SavePath + FName.Split('.').GetValue(0).ToString() + "_temp." + FName.Split('.').GetValue(1).ToString());
}
}
newFile.Close();
newFile.Dispose();
_OutFileName = FName;
_FileSize = _FileSizeTemp;
_Error = 0;
return;
}
catch (Exception ex)
{
_Error = 4;
return;
}
}
#endregion
}
