添加项目文件。

HT.Cloud.Code/Util/VerifyCodeHelper.cs

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+/*******************************************************************************
+ * Copyright © 2016 HT.Cloud.Framework 版权所有
+ * Author: HT.Cloud
+ * Description: WaterCloud快速开发平台
+ * Website：
+*********************************************************************************/
+
+using System;
+using System.DrawingCore;
+using System.DrawingCore.Imaging;
+using System.IO;
+
+namespace HT.Cloud.Code
+{
+	public class VerifyCodeHelper
+	{
+		public byte[] GetVerifyCode()
+		{
+			int codeW = 80;
+			int codeH = 30;
+			int fontSize = 16;
+			string chkCode = string.Empty;
+			//颜色列表，用于验证码、噪线、噪点
+			Color[] color = { Color.Black, Color.Red, Color.Blue, Color.Green, Color.Orange, Color.Brown, Color.Brown, Color.DarkBlue };
+			//字体列表，用于验证码
+			string[] font = { "Times New Roman" };
+			//验证码的字符集，去掉了一些容易混淆的字符
+			char[] character = { '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'd', 'e', 'f', 'h', 'k', 'm', 'n', 'r', 'x', 'y', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'W', 'X', 'Y' };
+			Random rnd = new Random();
+			//生成验证码字符串
+			for (int i = 0; i < 4; i++)
+			{
+				chkCode += character[rnd.Next(character.Length)];
+			}
+			//写入Session、验证码加密
+			WebHelper.WriteSession("wcloud_session_verifycode", Md5.md5(chkCode.ToLower(), 16));
+			//创建画布
+			Bitmap bmp = new Bitmap(codeW, codeH);
+			Graphics g = Graphics.FromImage(bmp);
+			g.Clear(Color.White);
+			//画噪线
+			for (int i = 0; i < 3; i++)
+			{
+				int x1 = rnd.Next(codeW);
+				int y1 = rnd.Next(codeH);
+				int x2 = rnd.Next(codeW);
+				int y2 = rnd.Next(codeH);
+				Color clr = color[rnd.Next(color.Length)];
+				g.DrawLine(new Pen(clr), x1, y1, x2, y2);
+			}
+			//画验证码字符串
+			for (int i = 0; i < chkCode.Length; i++)
+			{
+				string fnt = font[rnd.Next(font.Length)];
+				Font ft = new Font(fnt, fontSize);
+				Color clr = color[rnd.Next(color.Length)];
+				g.DrawString(chkCode[i].ToString(), ft, new SolidBrush(clr), (float)i * 18, (float)0);
+			}
+			//将验证码图片写入内存流，并将其以 "image/Png" 格式输出
+			MemoryStream ms = new MemoryStream();
+			try
+			{
+				bmp.Save(ms, ImageFormat.Png);
+				return ms.ToArray();
+			}
+			catch (Exception)
+			{
+				return null;
+			}
+			finally
+			{
+				g.Dispose();
+				bmp.Dispose();
+			}
+		}
+	}
+
+	public class GetJsVesion
+	{
+		public static string GetVcode()
+		{
+			TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
+			return Convert.ToInt64(ts.TotalSeconds).ToString();
+		}
+	}
+}