远程上传图片＋水印效果＋缩略图

好久没写东西了，今天写玩意来给大家看看：

 

远程上传图片#region 远程上传图片
public class RUpload
...{
    /**//// <summary>
    /// 生成缩略图
    /// </summary>
    /// <param name="filePath"></param>
    /// <param name="fileName"></param>
    /// <param name="page">文件扩展名</param>
    /// <param name="picwidth"></param>
    /// <param name="picheight">缩略图高度</param>
    public void CreateSmallImg(string filePath, string fileName, Page page, int picwidth, int picheight)
    ...{
        try
        ...{
            Image image = Image.FromFile(page.Server.MapPath(filePath + "/" + fileName));
            Image.GetThumbnailImageAbort callback = new Image.GetThumbnailImageAbort(this.ThumbnailCallback);
            image.GetThumbnailImage(picwidth, picheight, callback, new IntPtr()).Save(page.Server.MapPath(filePath + "/small_" + fileName));
            image.Dispose();
        }
        catch
        ...{
        }
    }

    /**//// <summary>
    /// 添加文字水印效果
    /// </summary>
    /// <param name="OldPath">上传地址</param>
    /// <param name="Path">保存地址</param>
    /// <param name="AddText">添加的文字</param>
    public void Fonts(string filePath, string fileName, Page page, string AddText)
    ...{
        try
        ...{
            Image image = Image.FromFile(page.Server.MapPath(filePath + "/" + fileName));
            Image.GetThumbnailImageAbort callback = new Image.GetThumbnailImageAbort(this.ThumbnailCallback);
            Graphics graphics = Graphics.FromImage(image);
            graphics.DrawImage(image, 0, 0, image.Width, image.Height);
            Font font = new Font("Verdana", 16f);
            Brush brush = new SolidBrush(Color.White);
            graphics.DrawString(AddText, font, brush, (float)10f, (float)10f);
            graphics.Dispose();
            image.Save(page.Server.MapPath(filePath + "/font_" + fileName));
            image.Dispose();
        }
        catch (Exception exception)
        ...{

        }
    }

    /**//// <summary>
    /// 生成文件名
    /// </summary>
    /// <returns></returns>
    private string GetFileName()
    ...{
        string text = DateTime.Now.ToString("yyyymmddhhmmss").Replace(":", "").Replace("-", "").Replace(" ", "");
        string text2 = this.RndNum(8);
        return (text + text2);
    }

    /**//// <summary>
    /// 远程保存缩略图的
    /// </summary>
    /// <param name="strs"></param>
    /// <param name="oldFileName"></param>
    /// <param name="filePath"></param>
    /// <param name="sExt"></param>
    /// <param name="page">this.Page</param>
    /// <param name="picwidth"></param>
    /// <param name="picheight"></param>
    /// <returns></returns>
    private string RemoteSave(string strs, string oldFileName, string filePath, string sExt, Page page, int picwidth, int picheight)
    ...{
        string[] textArray = oldFileName.Split(new char[] ...{ '|' });
        string text2 = strs;
        for (int i = 0; i < textArray.Length; i++)
        ...{
            string fileName = this.GetFileName() + "." + sExt;
            if (this.getHttpXmlContent(textArray.GetValue(i).ToString(), page, filePath, fileName))
            ...{
                text2 = text2.Replace(textArray.GetValue(i).ToString(), filePath + "/" + fileName);
                this.CreateSmallImg(filePath, fileName, page, picwidth, picheight);
            }
        }
        return text2;
    }

    /**//// <summary>
    /// 远程保存文字水印的
    /// </summary>
    /// <param name="strs"></param>
    /// <param name="oldFileName"></param>
    /// <param name="filePath"></param>
    /// <param name="sExt"></param>
    /// <param name="page"></param>
    /// <param name="text"></param>
    /// <returns></returns>
    private string RemoteSave(string strs, string oldFileName, string filePath, string sExt, Page page, string text)
    ...{
        string[] textArray = oldFileName.Split(new char[] ...{ '|' });
        string text2 = strs;
        for (int i = 0; i < textArray.Length; i++)
        ...{
            string fileName = this.GetFileName() + "." + sExt;
            if (this.getHttpXmlContent(textArray.GetValue(i).ToString(), page, filePath, fileName))
            ...{
                text2 = text2.Replace(textArray.GetValue(i).ToString(), filePath + "/" + fileName);
                this.Fonts(filePath, fileName, page, text);
            }
        }
        return text2;
    }

    /**//// <summary>
    /// 远程上传
    /// </summary>
    /// <param name="strs">远程上传的源数据</param>
    /// <param name="page">this.Page</param>
    /// <param name="filePath">上传路径</param>
    /// <param name="fileExt">上传的文件扩展名，可用＂|＂分隔</param>
    /// <param name="picwidth">缩略图宽度</param>
    /// <param name="picheight">缩略图高度</param>
    /// <returns>文件名</returns>
    public string RemoteUploadFile(string strs, Page page, string filePath, string fileExt, int picwidth, int picheight)
    ...{
        string[] textArray = fileExt.Split(new char[] ...{ '|' });
        string oldFileName = "";
        try
        ...{
            for (int i = 0; i < textArray.Length; i++)
            ...{
                oldFileName = this.ReplaceUrl(strs, textArray.GetValue(i).ToString());
                strs = this.RemoteSave(strs, oldFileName, filePath, textArray.GetValue(i).ToString(), page, picwidth, picheight);
            }
            return strs;
        }
        catch
        ...{
            return strs;
        }
    }
    public string RemoteUploadFileFont(string strs, Page page, string filePath, string fileExt, string text)
    ...{
        string[] textArray = fileExt.Split(new char[] ...{ '|' });
        string oldFileName = "";
        try
        ...{
            for (int i = 0; i < textArray.Length; i++)
            ...{
                oldFileName = this.ReplaceUrl(strs, textArray.GetValue(i).ToString());
                strs = this.RemoteSave(strs, oldFileName, filePath, textArray.GetValue(i).ToString(), page, text);
            }
            return strs;
        }
        catch
        ...{
            return strs;
        }
    }

    /**//// <summary>
    /// 重写远程网址
    /// </summary>
    /// <param name="strs"></param>
    /// <param name="filePath"></param>
    /// <param name="sExt"></param>
    /// <returns></returns>
    public string ReplaceRemoteSaveUrl(string strs, string filePath, string sExt)
    ...{
        Regex regex = new Regex("((" + filePath + @")(S*/)((S)+[.]{1}(" + sExt + ")))", RegexOptions.IgnoreCase);
        string text2 = "";
        int num = 0;
        for (Match match = regex.Match(strs); match.Success; match = match.NextMatch())
        ...{
            match.NextMatch();
            if (num == 0)
            ...{
                if (text2.IndexOf(match.Value) == -1)
                ...{
                    text2 = match.Value;
                }
            }
            else if (text2.IndexOf(match.Value) == -1)
            ...{
                text2 = text2 + "|" + match.Value;
            }
            num++;
        }
        return text2;
    }

    /**//// <summary>
    /// 替换地址
    /// </summary>
    /// <param name="strs"></param>
    /// <param name="sExt"></param>
    /// <returns></returns>
    private string ReplaceUrl(string strs, string sExt)
    ...{
        Regex regex = new Regex(@"((http|https|ftp|rtsp|mms):(//|//){1}(([A-Za-z0-9_-])+[.]){1,}(net|com|cn|org|cc|tv|[0-9]{1,3})(S*/)((S)+[.]{1}(" + sExt + ")))", RegexOptions.IgnoreCase);
        string text2 = "";
        int num = 0;
        for (Match match = regex.Match(strs); match.Success; match = match.NextMatch())
        ...{
            match.NextMatch();
            if (num == 0)
            ...{
                if (text2.IndexOf(match.Value) == -1)
                ...{
                    text2 = match.Value;
                }
            }
            else if (text2.IndexOf(match.Value) == -1)
            ...{
                text2 = text2 + "|" + match.Value;
            }
            num++;
        }
        return text2;
    }

    /**//// <summary>
    /// 随机数的产生
    /// </summary>
    /// <param name="VcodeNum"></param>
    /// <returns></returns>
    public string RndNum(int VcodeNum)
    ...{
        string[] textArray = "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,W,X,Y,Z".Split(new char[] ...{ ',' });
        string text2 = "";
        int num = -1;
        Random random = new Random();
        for (int i = 1; i < (VcodeNum + 1); i++)
        ...{
            if (num != -1)
            ...{
                random = new Random((i * num) * ((int)DateTime.Now.Ticks));
            }
            int index = random.Next(0x23);
            if ((num != -1) && (num == index))
            ...{
                return this.RndNum(VcodeNum);
            }
            num = index;
            text2 = text2 + textArray[index];
        }
        return text2;
    }
    private bool ThumbnailCallback()
    ...{
        return false;
    }
    private bool getHttpXmlContent(string url, Page page, string filePath, string fileName)
    ...{
        string text = "";
        string path = filePath + "/" + fileName;
        try
        ...{
            byte[] buffer = new byte[0];
            WebResponse response = WebRequest.Create(url).GetResponse();
            Stream responseStream = response.GetResponseStream();
            if (!response.ContentType.ToLower().StartsWith("text/"))
            ...{
                int count;
                byte[] buffer2 = new byte[0x400];
                Stream stream2 = File.Create(page.Server.MapPath(path));
                do
                ...{
                    count = responseStream.Read(buffer2, 0, buffer2.Length);
                    if (count > 0)
                    ...{
                        stream2.Write(buffer2, 0, count);
                    }
                }
                while (count > 0);
                stream2.Close();
            }
            else
            ...{
                text = new StreamReader(responseStream, Encoding.Default).ReadToEnd();
                StreamWriter writer = new StreamWriter(page.Server.MapPath(path));
                writer.Write(text);
                writer.Flush();
                writer.Close();
            }
            responseStream.Close();
            return true;
        }
        catch
        ...{
            return false;
        }
    }
}
#endregion