226 lines
8.8 KiB
C#
226 lines
8.8 KiB
C#
using Face.Domain.ViewModels;
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using Face.Services.Manager;
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using Face.Web.Areas.App.Controllers;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Net.Security;
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using System.Security.Cryptography.X509Certificates;
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using System.Threading.Tasks;
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using System.Web;
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using ImageMagick;
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using System.Web.Hosting;
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using static WebSocketToolsConsole.Entity;
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namespace Face.Web.Areas.App.Models
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{
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/// <summary>
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/// 图片处理类
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/// </summary>
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public class practical
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{
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/// <summary>
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/// 网络图片保存到项目目录
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/// </summary>
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/// <param name="url"></param>
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/// <param name="dtnow"></param>
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public string Down(string url, string dtnow)
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{
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try
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{
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WebRequest wreq = WebRequest.Create(url);
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HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();
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Stream s = wresp.GetResponseStream();
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System.Drawing.Image img;
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img = System.Drawing.Image.FromStream(s);
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string TimePath = HostingEnvironment.MapPath("~/Upload/Image/");//保存路径
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string TimePathMake = HostingEnvironment.MapPath("~/Upload/Img/");//小图
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img.Save(TimePath + dtnow + "_1" + ".jpg", ImageFormat.Jpeg);
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Task<string> res = MakeThumbnail(img, TimePathMake, 500, 500, "", dtnow);
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//System.IO.File.Delete(TimePath + "1" + name + ".jpg");
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res.Start();
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//MemoryStream ms = new MemoryStream();
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img.Dispose();
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string ftpURL = "auth.blv-oa.com:50/uts_Manager/oyl_FTP/Image";
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//string ftpURLTwo = "auth.blv-oa.com:50/uts_Manager/oyl_FTP/Img";
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//FtpUploadShow(TimePathMake + dtnow + ".jpg", ftpURLTwo);
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return FtpUploadShow(res.Result, ftpURL);
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}
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catch (Exception ex)
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{
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LogHelp.WriteExceptionLog(ex, "图片");
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return "图片路径错误";
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}
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}
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public Task<string> MakeThumbnail(Image originalImage, string thumbnailPath, int width, int height, string mode, string name)
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{
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ReturnResult result = new ReturnResult();
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int towidth = width;
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int toheight = height;
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int x = 0;
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int y = 0;
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int ow = originalImage.Width;
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int oh = originalImage.Height;
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if (mode == "")
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{
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if (ow > oh)
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{
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mode = "W";
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}
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else
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{
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mode = "H";
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}
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}
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switch (mode)
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{
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case "HW"://指定高宽缩放（可能变形）
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break;
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case "W"://指定宽，高按比例
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toheight = originalImage.Height * width / originalImage.Width;
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break;
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case "H"://指定高，宽按比例
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towidth = originalImage.Width * height / originalImage.Height;
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break;
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case "Cut"://指定高宽裁减（不变形）
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if ((double)originalImage.Width / (double)originalImage.Height > (double)towidth / (double)toheight)
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{
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oh = originalImage.Height;
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ow = originalImage.Height * towidth / toheight;
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y = 0;
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x = (originalImage.Width - ow) / 2;
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}
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else
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{
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ow = originalImage.Width;
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oh = originalImage.Width * height / towidth;
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x = 0;
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y = (originalImage.Height - oh) / 2;
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}
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break;
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default:
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break;
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}
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//新建一个bmp图片
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Image bitmap = new System.Drawing.Bitmap(towidth, toheight);
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//新建一个画板
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Graphics g = System.Drawing.Graphics.FromImage(bitmap);
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//设置高质量插值法
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g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
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//设置高质量,低速度呈现平滑程度
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
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//清空画布并以透明背景色填充
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g.Clear(Color.Transparent);
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//在指定位置并且按指定大小绘制原图片的指定部分
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g.DrawImage(originalImage, new Rectangle(0, 0, towidth, toheight),
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new Rectangle(x, y, ow, oh),
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GraphicsUnit.Pixel);
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try
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{
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if (!Directory.Exists(thumbnailPath))
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{
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Directory.CreateDirectory(thumbnailPath);
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}
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//以jpg格式保存缩略图
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bitmap.Save(thumbnailPath + "2" + name + ".jpg");
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ImgServerController.CompressImage(thumbnailPath + "2" + name + ".jpg", thumbnailPath + name + ".jpg");
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//System.IO.File.Delete(thumbnailPath + "2" + name + ".jpg");
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return new Task<string>(() => thumbnailPath + name + ".jpg");
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//return thumbnailPath + info.Name;
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}
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catch (System.Exception e)
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{
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LogHelp.WriteExceptionLog(e, this.GetType().Name);
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return null;
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}
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finally
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{
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originalImage.Dispose();
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bitmap.Dispose();
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g.Dispose();
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}
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}
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public string FtpUploadShow(string filename, string ftpServerIP)
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{
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//filename += ".jpg";
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string ftpUserID = "uts_manager";//ftp账号
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string ftpPassword = "uts_Inhaos@all";//ftp密码
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FileInfo fileInf = new FileInfo(filename);
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FtpWebRequest reqFTP;
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ServicePointManager.ServerCertificateValidationCallback =
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new RemoteCertificateValidationCallback(ValidateServerCertificate);
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try
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{
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// 根据uri创建FtpWebRequest对象
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reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileInf.Name));
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string s = fileInf.Name;
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// ftp用户名和密码
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reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
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// 默认为true，连接不会被关闭
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// 在一个命令之后被执行
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reqFTP.KeepAlive = true;
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//如果要连接的 FTP 服务器要求凭据并支持安全套接字层 (SSL)，则应将 EnableSsl 设置为 true。如果不写会报出421错误（服务不可用）
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reqFTP.EnableSsl = false;
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// 指定执行什么命令
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reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
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// 指定数据传输类型
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reqFTP.UseBinary = true;
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// 上传文件时通知服务器文件的大小
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reqFTP.ContentLength = fileInf.Length;
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// 缓冲大小设置为 10kb
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int buffLength = 10480;
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byte[] buff = new byte[buffLength];
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int contentLen;
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// 打开一个文件流 (System.IO.FileStream) 去读上传的文件
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FileStream fs = fileInf.OpenRead();
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try
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{
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// 把上传的文件写入流
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Stream strm = reqFTP.GetRequestStream();
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// 每次读文件流的buffLength kb
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contentLen = fs.Read(buff, 0, buffLength);
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// 流内容没有结束
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while (contentLen != 0)
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{
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// 把内容从file stream 写入 upload stream
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strm.Write(buff, 0, contentLen);
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contentLen = fs.Read(buff, 0, buffLength);
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}
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// 关闭两个流
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strm.Close();
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fs.Close();
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return fileInf.Name;
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}
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catch (Exception ex)
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{
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LogHelp.WriteExceptionLog(ex,"图片ftp错误"+ex.Message);
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}
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}
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catch (Exception e)
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{
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LogHelp.WriteExceptionLog(e, "图片ftp错误" + e.Message);
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}
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return null;
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}
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public static bool ValidateServerCertificate
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(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
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{
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return true;
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}
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}
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} |